Mohamed Abdelaziz Archaeologist/3D Artist Ministry of Egyptian Tourism and Antiquities Research associated at CEAlex/CNRS Research associated at Indiana University/USA Director of historical art at Flyover Zone/USA US Tel: +1 (812) 929-5463 Eg tel: +20 1026252384 Supervisors: Jean-Yves EMPEREUR, Isabelle Hairy, Bernard Frischer, Steve Vinson, Marie-Dominique Nenna, and Thomas Faucher Phone: +18129295463
In Alexandria-Egypt, CEAlex (Centre d’etudes Alexandrines) conducted the first scientific underw... more In Alexandria-Egypt, CEAlex (Centre d’etudes Alexandrines) conducted the first scientific underwater excavations in 1994 on the submerged site of the remains of the ancient lighthouse of Alexandria near Qaitbey fort, since 2014, for the first time in Egypt, with the support of Honor Frost foundation, the center has launched a 3D underwater photogrammetry data-gathering program to obtain a DSM – Digital Surface Model – of the submerged site of the lighthouse, and a 3D model of some artifacts. During this work, many challenges were inherent all over the processing methods to make the result more efficient. For this reason, Photogrammetry and computer graphics may be used to help discover and encode accurate optical properties of materials, such as inscriptions and features of small objects. In this paper we present the result of an underwater research project using mixed techniques between photogrammetry and ’Virtual’’ Reflection Transformation Imaging (RTI) combine with Photogrammetry of a statue base locate underwater, achieved by applying ‘’Virtual’’ lighting to 3D model objects, using multiple images of fixed view-points and varying lighting conditions, these techniques allow virtual automated reconstruction of highly detailed 3D texture-mapped models, to show all visible inscriptions and hidden details of the object using some specific filter and altering the light in RTI after stripping any color and texture information from it, we describe the V-RTI method and critically compare it to the current standard Highlight (H-RTI) method.
This chapter presents the results of archaeological project documentation through digital photogr... more This chapter presents the results of archaeological project documentation through digital photogrammetry at different sites and for a variety of objects in Egypt. We demonstrate its promise for both documentation and restoration. We describe a study in which photogrammetry and digital modeling techniques were used to obtain a threedimensional surface digital model of an important underwater site, and we shall see also how photogrammetry with the aid of computer graphics is an important tool for virtual restoration of fragmentary statues lifted from the sea. Finally, we demonstrate the use of 3D scanning data sets to reveal an inscription, invisible to the naked eye in natural light, on a part of a deteriorated granite column.
American School of Classical Studies at Athens, Jul 2, 2022
Using new interactive digital reconstructions, we propose that a recently discussed statue base i... more Using new interactive digital reconstructions, we propose that a recently discussed statue base in the Athenian Agora could have accommodated both pairs of Tyrannicides after Alexander returned Antenor's from Persia in 323 b.c.; that it would have revived a famous Athenian commemorative tactic after the Persian withdrawal in 479; that the monument's potency as an icon of Athenian fear and loathing of tyranny evolved but did not necessarily shrink under the Successors; and that any other candidate for its Hellenistic and later appearance should echo, more or less, this base's dimensions, form, and construction. We also urge that for such visualizations, guidelines formulated by specialists in cultural heritage reconstruction have much to recommend them.
Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the ... more Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort at a depth of 2 to 9 metres. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts. In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria's ancient lighthouse. Until 2016, only about 7200 m 2 of the submerged site, which exceeds more than 13000 m 2 , was covered. One of our main objectives in this project is to georeference the site since this would allow for a very precise 3D model and for correcting the orientation of the site as regards the real-world space.
Si l'instruction des écoliers égyptiens dans un cadre officiel demeure encore largement méconnue,... more Si l'instruction des écoliers égyptiens dans un cadre officiel demeure encore largement méconnue, et ne peut s'appréhender que dans les grandes lignes, nous savons que la maîtrise de l' écriture et de la lecture a constitué la base de l'enseignement pédagogique délivré dans les institutions scolaires. Nous connaissons deux lieux d'enseignement, l'école (ât sebayt) et la Maison de Vie (per ânkh) qui accueillaient les garçons issus des élites. Quant aux garçons issus des couches modestes ou pauvres, c'était la famille qui se chargeait de l'apprentissage du métier de leur progéniture. Par ailleurs, nous possédons peu de renseignements co ncernant l'éducation des filles.
يعد التصوير المساحى الفوتوغرافي التحتمائى (الفوتوجراميترى) احد التقنيات الجديدة في مجال الآثار ال... more يعد التصوير المساحى الفوتوغرافي التحتمائى (الفوتوجراميترى) احد التقنيات الجديدة في مجال الآثار الغارقة في مصر, حيث تم تطبيقه لأول مرة على الموقع الأثري المغمور تحت الماء والمعروف باسم موقع فنار الإسکندرية القديم الذى کان يقع على الطرف الشرقي لجزيرة فاروس القديمة بجوار قلعة قايتباي من الجهة الشرقية على عمق يتراوح بين 2 إلى 9 أمتار. وفي عام 2009/2010، قام المرکز الفرنسى للدراسات السکندرية CEAlex بوضع برنامجًا لجمع بيانات باستخدام تقنية المساحة التصويرية (الفوتوجراميترى) لعمل نموذج للقطع الأثرية المکسورة , کالأعمدة وبعض التماثيل , ومحاولة اعادة تجميعها باستخدام الواقع الافتراضي فى شکل نموذج رقمى ثلاثي الأبعاد. ولکن في عام 2013 وبداية عام 2014 ، وبدعم من مؤسسة هونور فروست Honor Frost Foundation،
تم تطوير وتحسين الأساليب المستخدمة فى التوثيق الفوتوجراميترى التحتمائى للحصول على صورة فوتوغرافية متکاملة للموقع المغمورتحت الماء بجوار قلعة قايتباي بالمجهودات اليدوية البسيطة وذلک باستخدام کاميرا DSLR وبعض المواد والأدوات البسيطة ومنخفضة التکلفة للحصول على نموذج رقمي ثلاثى الأبعاد لموقع الفنار المغمور، وأيضًا لعمل نماذج ثلاثية الأبعاد لبعض القطع الأثرية، مثل التماثيل، وقواعد التماثيل وکذلک بعض العناصر المعمارية. نقدم في هذه الورقة البحثية أهمية طرق التصوير التحتمائى فى مجال الآثار الغارقة ثم کيفية معالجة البيانات من أجل إنشاء نموذج رقمى ثلاثى الأبعاد للموقع المغمور لفنار الإسکندرية القديم . حيث ان هذا التوثيق يعد مرحلة مهمة ومتقدمة فى دراسة الموقع الأثرى. حتى عام 2016 قد تم تصوير حوالي 7200 متر مربع فقط من مساحة الموقع المغمور ، والذي يتجاوزمساحته أکثر من 13000 متر مربع.
Abstract
Underwater photogrammetry is completely a new experience in underwater archaeology in Egypt, applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort on a depth of 2 to 9 meters. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts like columns and some statues, But In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria’s ancient lighthouse. Until 2016, only about 7200 m2 of the submerged site, which exceeds more than 13000 m2, was covered
Bulletin archéologique des Écoles françaises à l’étranger, 2020
Ce document a été généré automatiquement le 27 juillet 2021. Le Bulletin archéologique des Écoles... more Ce document a été généré automatiquement le 27 juillet 2021. Le Bulletin archéologique des Écoles françaises à l'étranger est mise à disposition selon les termes de la Licence Creative Commons Attribution-Pas d'Utilisation Commerciale-Pas de Modification 4.0 International.
Poster presented at 2nd International Workshop UNDERWATER 3D RECORDING & MODELLING: A tool for modern applications and CH recording (2-3 May 2019, LIMASSOL, CYPRUS), 2019
Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the ... more Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort at a depth of 2 to 9 metres. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts. In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria’s ancient lighthouse. Until 2016, only about 7200 m2 of the submerged site, which exceeds more than 13000 m2, was covered. One of our main objectives in this project is to georeference the site since this would allow for a very precise 3D model and for correcting the orientation of the site as regards the real world space.
Poster presented at ANCIENT EGYPT AND NEW TECHNOLOGY: The Present and Future of Computer Visualization, Virtual Reality and Other Digital Humanities in Egyptology, Indiana University, Bloomington, 2019
Photogrammetry is the science of extracting accurate 3Dmetric and descriptive object information ... more Photogrammetry is the science of extracting accurate 3Dmetric and descriptive object information from multipleanalogue and digital images. These images can be usedto generate 3D models of buildings or objects usingsoftware to create point clouds that are transformed into3D mesh. So, measurements of the size, shape, positionand texture of objects can be derived from these photos.In Egypt, particularly in Alexandria, for the first time weused several techniques to document archaeologicalsites using photogrammetry either on land orunderwater in collaboration with CEALex and theMinistry of Egyptian Antiquities.This paper presents the results of the project'sdocumentation which had been done at the differentsites in Egypt to show its promising, utilizing digitalphotogrammetry methodology application inarchaeology. Also, it describes a study in whichphotogrammetry methods and digital modelingtechniques were used to obtain a three‐dimensionaldigital model. Moreover, the importance of using 3Dscanning data sets to reveal invisible information atarchaeological sites ‐ which are affected by decay
processes and frequently endanger the last vestiges ofsome peoples and cultures ‐ will additionally behighlighted. Finally, we shall see how photogrammetrywith the aid of computer graphics is important to have avirtual restoration of an object's fragments.
Program and abstracts for the 2019 conference Ancient Egypt - New Technology, at Indiana Universi... more Program and abstracts for the 2019 conference Ancient Egypt - New Technology, at Indiana University - Bloomington, where Mohamed Abdelaziz is participating through the conference.
Photogrammetry is the art and science of deriving accurate 3D metric and descriptive object infor... more Photogrammetry is the art and science of deriving accurate 3D metric and descriptive object information from multiple analogue and digital images. Concerned with deriving measurements of the size, shape, position and texture of objects from measurements made on photographs, it can be used to create 3D models of buildings or objects by overlapping images using photogrammetric software and creating point clouds that are translated into a 3D mesh. Any camera can be used for photogrammetric purposes, from low-cost to high-end large format metric cameras. There is an increasing interest in utilizing this imagery in different fields such as archaeology, architecture and mechanical inspection. The aim of this paper is to show the results of a project utilizing digital photogrammetry methodology at different sites in Alexandria, Egypt and its promising application in archaeology. The paper describes a study in which photogrammetry methods and digital modelling techniques were used to obtain a threedimensional digital model based on maps and plans, either as elevations, facades and/or contours, and the relevance of this technology in the documentation, conservation and safeguarding of archaeological sites. The importance of using 3D scanning data sets to reveal otherwise invisible information at archaeological sites that are affected by decay processes, and which frequently endanger the last vestiges of some peoples and cultures will additionally be highlighted.
Physically based rendering (PBR) is an approach in computer graphics that seeks to render graphic... more Physically based rendering (PBR) is an approach in computer graphics that seeks to render graphics in a way that more accurately models the flow of light in the real world. Photogrammetry may be used to help discover and encode accurate optical properties of materials. The paper presents methods for photorealistic rendering of virtual objects at Brooklyn museum so that they can be seamlessly composited into images of the real world. To generate predictable and consistent results, we study physically based methods, which simulate how light propagates in a mathematical model of the augmented scene. This computationally challenging problem demands both efficient and accurate simulation of the light transport in the scene, as well as detailed modeling of the geometries, illumination conditions, and material properties. In this presentation, we discuss and formulate the challenges inherent in these steps and present several methods to make the process more efficient. This work-in-progress 3D imaging project by the Egyptology Program at Indiana University Bloomington. The paper also presents use the development of a methodology for the virtual anastylosis (re-erection) of five sculptural fragments belonging to Ramesses II located in Tanis, Egypt. Fundamental to the method is photogrammetry to create 3d modeling of fragments. Through this process we are able to visually re-assemble the fragments without intervening directly on the pieces.
In Alexandria-Egypt, CEAlex (Centre d’etudes Alexandrines) conducted the first scientific underw... more In Alexandria-Egypt, CEAlex (Centre d’etudes Alexandrines) conducted the first scientific underwater excavations in 1994 on the submerged site of the remains of the ancient lighthouse of Alexandria near Qaitbey fort, since 2014, for the first time in Egypt, with the support of Honor Frost foundation, the center has launched a 3D underwater photogrammetry data-gathering program to obtain a DSM – Digital Surface Model – of the submerged site of the lighthouse, and a 3D model of some artifacts. During this work, many challenges were inherent all over the processing methods to make the result more efficient. For this reason, Photogrammetry and computer graphics may be used to help discover and encode accurate optical properties of materials, such as inscriptions and features of small objects. In this paper we present the result of an underwater research project using mixed techniques between photogrammetry and ’Virtual’’ Reflection Transformation Imaging (RTI) combine with Photogrammetry of a statue base locate underwater, achieved by applying ‘’Virtual’’ lighting to 3D model objects, using multiple images of fixed view-points and varying lighting conditions, these techniques allow virtual automated reconstruction of highly detailed 3D texture-mapped models, to show all visible inscriptions and hidden details of the object using some specific filter and altering the light in RTI after stripping any color and texture information from it, we describe the V-RTI method and critically compare it to the current standard Highlight (H-RTI) method.
This chapter presents the results of archaeological project documentation through digital photogr... more This chapter presents the results of archaeological project documentation through digital photogrammetry at different sites and for a variety of objects in Egypt. We demonstrate its promise for both documentation and restoration. We describe a study in which photogrammetry and digital modeling techniques were used to obtain a threedimensional surface digital model of an important underwater site, and we shall see also how photogrammetry with the aid of computer graphics is an important tool for virtual restoration of fragmentary statues lifted from the sea. Finally, we demonstrate the use of 3D scanning data sets to reveal an inscription, invisible to the naked eye in natural light, on a part of a deteriorated granite column.
American School of Classical Studies at Athens, Jul 2, 2022
Using new interactive digital reconstructions, we propose that a recently discussed statue base i... more Using new interactive digital reconstructions, we propose that a recently discussed statue base in the Athenian Agora could have accommodated both pairs of Tyrannicides after Alexander returned Antenor's from Persia in 323 b.c.; that it would have revived a famous Athenian commemorative tactic after the Persian withdrawal in 479; that the monument's potency as an icon of Athenian fear and loathing of tyranny evolved but did not necessarily shrink under the Successors; and that any other candidate for its Hellenistic and later appearance should echo, more or less, this base's dimensions, form, and construction. We also urge that for such visualizations, guidelines formulated by specialists in cultural heritage reconstruction have much to recommend them.
Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the ... more Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort at a depth of 2 to 9 metres. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts. In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria's ancient lighthouse. Until 2016, only about 7200 m 2 of the submerged site, which exceeds more than 13000 m 2 , was covered. One of our main objectives in this project is to georeference the site since this would allow for a very precise 3D model and for correcting the orientation of the site as regards the real-world space.
Si l'instruction des écoliers égyptiens dans un cadre officiel demeure encore largement méconnue,... more Si l'instruction des écoliers égyptiens dans un cadre officiel demeure encore largement méconnue, et ne peut s'appréhender que dans les grandes lignes, nous savons que la maîtrise de l' écriture et de la lecture a constitué la base de l'enseignement pédagogique délivré dans les institutions scolaires. Nous connaissons deux lieux d'enseignement, l'école (ât sebayt) et la Maison de Vie (per ânkh) qui accueillaient les garçons issus des élites. Quant aux garçons issus des couches modestes ou pauvres, c'était la famille qui se chargeait de l'apprentissage du métier de leur progéniture. Par ailleurs, nous possédons peu de renseignements co ncernant l'éducation des filles.
يعد التصوير المساحى الفوتوغرافي التحتمائى (الفوتوجراميترى) احد التقنيات الجديدة في مجال الآثار ال... more يعد التصوير المساحى الفوتوغرافي التحتمائى (الفوتوجراميترى) احد التقنيات الجديدة في مجال الآثار الغارقة في مصر, حيث تم تطبيقه لأول مرة على الموقع الأثري المغمور تحت الماء والمعروف باسم موقع فنار الإسکندرية القديم الذى کان يقع على الطرف الشرقي لجزيرة فاروس القديمة بجوار قلعة قايتباي من الجهة الشرقية على عمق يتراوح بين 2 إلى 9 أمتار. وفي عام 2009/2010، قام المرکز الفرنسى للدراسات السکندرية CEAlex بوضع برنامجًا لجمع بيانات باستخدام تقنية المساحة التصويرية (الفوتوجراميترى) لعمل نموذج للقطع الأثرية المکسورة , کالأعمدة وبعض التماثيل , ومحاولة اعادة تجميعها باستخدام الواقع الافتراضي فى شکل نموذج رقمى ثلاثي الأبعاد. ولکن في عام 2013 وبداية عام 2014 ، وبدعم من مؤسسة هونور فروست Honor Frost Foundation،
تم تطوير وتحسين الأساليب المستخدمة فى التوثيق الفوتوجراميترى التحتمائى للحصول على صورة فوتوغرافية متکاملة للموقع المغمورتحت الماء بجوار قلعة قايتباي بالمجهودات اليدوية البسيطة وذلک باستخدام کاميرا DSLR وبعض المواد والأدوات البسيطة ومنخفضة التکلفة للحصول على نموذج رقمي ثلاثى الأبعاد لموقع الفنار المغمور، وأيضًا لعمل نماذج ثلاثية الأبعاد لبعض القطع الأثرية، مثل التماثيل، وقواعد التماثيل وکذلک بعض العناصر المعمارية. نقدم في هذه الورقة البحثية أهمية طرق التصوير التحتمائى فى مجال الآثار الغارقة ثم کيفية معالجة البيانات من أجل إنشاء نموذج رقمى ثلاثى الأبعاد للموقع المغمور لفنار الإسکندرية القديم . حيث ان هذا التوثيق يعد مرحلة مهمة ومتقدمة فى دراسة الموقع الأثرى. حتى عام 2016 قد تم تصوير حوالي 7200 متر مربع فقط من مساحة الموقع المغمور ، والذي يتجاوزمساحته أکثر من 13000 متر مربع.
Abstract
Underwater photogrammetry is completely a new experience in underwater archaeology in Egypt, applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort on a depth of 2 to 9 meters. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts like columns and some statues, But In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria’s ancient lighthouse. Until 2016, only about 7200 m2 of the submerged site, which exceeds more than 13000 m2, was covered
Bulletin archéologique des Écoles françaises à l’étranger, 2020
Ce document a été généré automatiquement le 27 juillet 2021. Le Bulletin archéologique des Écoles... more Ce document a été généré automatiquement le 27 juillet 2021. Le Bulletin archéologique des Écoles françaises à l'étranger est mise à disposition selon les termes de la Licence Creative Commons Attribution-Pas d'Utilisation Commerciale-Pas de Modification 4.0 International.
Poster presented at 2nd International Workshop UNDERWATER 3D RECORDING & MODELLING: A tool for modern applications and CH recording (2-3 May 2019, LIMASSOL, CYPRUS), 2019
Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the ... more Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort at a depth of 2 to 9 metres. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts. In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria’s ancient lighthouse. Until 2016, only about 7200 m2 of the submerged site, which exceeds more than 13000 m2, was covered. One of our main objectives in this project is to georeference the site since this would allow for a very precise 3D model and for correcting the orientation of the site as regards the real world space.
Poster presented at ANCIENT EGYPT AND NEW TECHNOLOGY: The Present and Future of Computer Visualization, Virtual Reality and Other Digital Humanities in Egyptology, Indiana University, Bloomington, 2019
Photogrammetry is the science of extracting accurate 3Dmetric and descriptive object information ... more Photogrammetry is the science of extracting accurate 3Dmetric and descriptive object information from multipleanalogue and digital images. These images can be usedto generate 3D models of buildings or objects usingsoftware to create point clouds that are transformed into3D mesh. So, measurements of the size, shape, positionand texture of objects can be derived from these photos.In Egypt, particularly in Alexandria, for the first time weused several techniques to document archaeologicalsites using photogrammetry either on land orunderwater in collaboration with CEALex and theMinistry of Egyptian Antiquities.This paper presents the results of the project'sdocumentation which had been done at the differentsites in Egypt to show its promising, utilizing digitalphotogrammetry methodology application inarchaeology. Also, it describes a study in whichphotogrammetry methods and digital modelingtechniques were used to obtain a three‐dimensionaldigital model. Moreover, the importance of using 3Dscanning data sets to reveal invisible information atarchaeological sites ‐ which are affected by decay
processes and frequently endanger the last vestiges ofsome peoples and cultures ‐ will additionally behighlighted. Finally, we shall see how photogrammetrywith the aid of computer graphics is important to have avirtual restoration of an object's fragments.
Program and abstracts for the 2019 conference Ancient Egypt - New Technology, at Indiana Universi... more Program and abstracts for the 2019 conference Ancient Egypt - New Technology, at Indiana University - Bloomington, where Mohamed Abdelaziz is participating through the conference.
Photogrammetry is the art and science of deriving accurate 3D metric and descriptive object infor... more Photogrammetry is the art and science of deriving accurate 3D metric and descriptive object information from multiple analogue and digital images. Concerned with deriving measurements of the size, shape, position and texture of objects from measurements made on photographs, it can be used to create 3D models of buildings or objects by overlapping images using photogrammetric software and creating point clouds that are translated into a 3D mesh. Any camera can be used for photogrammetric purposes, from low-cost to high-end large format metric cameras. There is an increasing interest in utilizing this imagery in different fields such as archaeology, architecture and mechanical inspection. The aim of this paper is to show the results of a project utilizing digital photogrammetry methodology at different sites in Alexandria, Egypt and its promising application in archaeology. The paper describes a study in which photogrammetry methods and digital modelling techniques were used to obtain a threedimensional digital model based on maps and plans, either as elevations, facades and/or contours, and the relevance of this technology in the documentation, conservation and safeguarding of archaeological sites. The importance of using 3D scanning data sets to reveal otherwise invisible information at archaeological sites that are affected by decay processes, and which frequently endanger the last vestiges of some peoples and cultures will additionally be highlighted.
Physically based rendering (PBR) is an approach in computer graphics that seeks to render graphic... more Physically based rendering (PBR) is an approach in computer graphics that seeks to render graphics in a way that more accurately models the flow of light in the real world. Photogrammetry may be used to help discover and encode accurate optical properties of materials. The paper presents methods for photorealistic rendering of virtual objects at Brooklyn museum so that they can be seamlessly composited into images of the real world. To generate predictable and consistent results, we study physically based methods, which simulate how light propagates in a mathematical model of the augmented scene. This computationally challenging problem demands both efficient and accurate simulation of the light transport in the scene, as well as detailed modeling of the geometries, illumination conditions, and material properties. In this presentation, we discuss and formulate the challenges inherent in these steps and present several methods to make the process more efficient. This work-in-progress 3D imaging project by the Egyptology Program at Indiana University Bloomington. The paper also presents use the development of a methodology for the virtual anastylosis (re-erection) of five sculptural fragments belonging to Ramesses II located in Tanis, Egypt. Fundamental to the method is photogrammetry to create 3d modeling of fragments. Through this process we are able to visually re-assemble the fragments without intervening directly on the pieces.
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Papers by Mohamed Abdelaziz
تم تطوير وتحسين الأساليب المستخدمة فى التوثيق الفوتوجراميترى التحتمائى للحصول على صورة فوتوغرافية متکاملة للموقع المغمورتحت الماء بجوار قلعة قايتباي بالمجهودات اليدوية البسيطة وذلک باستخدام کاميرا DSLR وبعض المواد والأدوات البسيطة ومنخفضة التکلفة للحصول على نموذج رقمي ثلاثى الأبعاد لموقع الفنار المغمور، وأيضًا لعمل نماذج ثلاثية الأبعاد لبعض القطع الأثرية، مثل التماثيل، وقواعد التماثيل وکذلک بعض العناصر المعمارية. نقدم في هذه الورقة البحثية أهمية طرق التصوير التحتمائى فى مجال الآثار الغارقة ثم کيفية معالجة البيانات من أجل إنشاء نموذج رقمى ثلاثى الأبعاد للموقع المغمور لفنار الإسکندرية القديم . حيث ان هذا التوثيق يعد مرحلة مهمة ومتقدمة فى دراسة الموقع الأثرى. حتى عام 2016 قد تم تصوير حوالي 7200 متر مربع فقط من مساحة الموقع المغمور ، والذي يتجاوزمساحته أکثر من 13000 متر مربع.
Abstract
Underwater photogrammetry is completely a new experience in underwater archaeology in Egypt, applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort on a depth of 2 to 9 meters. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts like columns and some statues, But In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria’s ancient lighthouse. Until 2016, only about 7200 m2 of the submerged site, which exceeds more than 13000 m2, was covered
processes and frequently endanger the last vestiges ofsome peoples and cultures ‐ will additionally behighlighted. Finally, we shall see how photogrammetrywith the aid of computer graphics is important to have avirtual restoration of an object's fragments.
measurements of the size, shape, position and texture of objects from measurements made on photographs, it can be used to create 3D models of buildings or objects by overlapping images using photogrammetric software and creating point clouds
that are translated into a 3D mesh. Any camera can be used for photogrammetric purposes, from low-cost to high-end large format metric cameras. There is an increasing interest in utilizing this imagery in different fields such as archaeology, architecture and mechanical inspection. The aim of this paper is to show the results of a project utilizing digital photogrammetry methodology at different sites in Alexandria, Egypt and its promising application in archaeology. The paper describes a study in which photogrammetry methods and digital modelling techniques were used to obtain a threedimensional digital model based on maps and plans, either as elevations, facades and/or contours, and the relevance of this technology in the documentation, conservation and safeguarding of archaeological sites. The importance of using 3D scanning data sets to reveal otherwise invisible information at archaeological sites that are affected by decay processes, and which frequently endanger the last vestiges of some peoples and cultures will additionally be highlighted.
and present several methods to make the process more efficient. This work-in-progress 3D imaging project by the Egyptology Program at Indiana University Bloomington. The paper also presents use the development of a methodology
for the virtual anastylosis (re-erection) of five sculptural fragments belonging to Ramesses II located in Tanis, Egypt. Fundamental to the method is photogrammetry to create 3d modeling of fragments. Through this process we are able to visually re-assemble the fragments without intervening directly on the pieces.
تم تطوير وتحسين الأساليب المستخدمة فى التوثيق الفوتوجراميترى التحتمائى للحصول على صورة فوتوغرافية متکاملة للموقع المغمورتحت الماء بجوار قلعة قايتباي بالمجهودات اليدوية البسيطة وذلک باستخدام کاميرا DSLR وبعض المواد والأدوات البسيطة ومنخفضة التکلفة للحصول على نموذج رقمي ثلاثى الأبعاد لموقع الفنار المغمور، وأيضًا لعمل نماذج ثلاثية الأبعاد لبعض القطع الأثرية، مثل التماثيل، وقواعد التماثيل وکذلک بعض العناصر المعمارية. نقدم في هذه الورقة البحثية أهمية طرق التصوير التحتمائى فى مجال الآثار الغارقة ثم کيفية معالجة البيانات من أجل إنشاء نموذج رقمى ثلاثى الأبعاد للموقع المغمور لفنار الإسکندرية القديم . حيث ان هذا التوثيق يعد مرحلة مهمة ومتقدمة فى دراسة الموقع الأثرى. حتى عام 2016 قد تم تصوير حوالي 7200 متر مربع فقط من مساحة الموقع المغمور ، والذي يتجاوزمساحته أکثر من 13000 متر مربع.
Abstract
Underwater photogrammetry is completely a new experience in underwater archaeology in Egypt, applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort on a depth of 2 to 9 meters. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts like columns and some statues, But In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria’s ancient lighthouse. Until 2016, only about 7200 m2 of the submerged site, which exceeds more than 13000 m2, was covered
processes and frequently endanger the last vestiges ofsome peoples and cultures ‐ will additionally behighlighted. Finally, we shall see how photogrammetrywith the aid of computer graphics is important to have avirtual restoration of an object's fragments.
measurements of the size, shape, position and texture of objects from measurements made on photographs, it can be used to create 3D models of buildings or objects by overlapping images using photogrammetric software and creating point clouds
that are translated into a 3D mesh. Any camera can be used for photogrammetric purposes, from low-cost to high-end large format metric cameras. There is an increasing interest in utilizing this imagery in different fields such as archaeology, architecture and mechanical inspection. The aim of this paper is to show the results of a project utilizing digital photogrammetry methodology at different sites in Alexandria, Egypt and its promising application in archaeology. The paper describes a study in which photogrammetry methods and digital modelling techniques were used to obtain a threedimensional digital model based on maps and plans, either as elevations, facades and/or contours, and the relevance of this technology in the documentation, conservation and safeguarding of archaeological sites. The importance of using 3D scanning data sets to reveal otherwise invisible information at archaeological sites that are affected by decay processes, and which frequently endanger the last vestiges of some peoples and cultures will additionally be highlighted.
and present several methods to make the process more efficient. This work-in-progress 3D imaging project by the Egyptology Program at Indiana University Bloomington. The paper also presents use the development of a methodology
for the virtual anastylosis (re-erection) of five sculptural fragments belonging to Ramesses II located in Tanis, Egypt. Fundamental to the method is photogrammetry to create 3d modeling of fragments. Through this process we are able to visually re-assemble the fragments without intervening directly on the pieces.