Two coordination complexes, [Mn<sub>2</sub>(pydco)<sub>2</sub>(phen)<s... more Two coordination complexes, [Mn<sub>2</sub>(pydco)<sub>2</sub>(phen)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·2H<sub>2</sub>O (<b>1</b>) and [Mn(3-pyco)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>] (<b>2</b>), based on Mn(II), pyridine-2,5-dicarboxylic acid <i>N</i>–oxide (H<sub>2</sub>pydco) and 1,10-phenanthroline (phen) as organic ligands have been synthesized and characterized by elemental analyses, infrared spectroscopy and single crystal X-ray diffraction. We have synthesized the first Mn(II) complex of H<sub>2</sub>pydco. Interestingly, <i>in situ</i> hydrothermal decarboxylation occurred in <b>2</b> and (pydco)<sup>2–</sup> was totally transformed into pyridine-3-carboxylate <i>N</i>–oxide (3-pyco)<sup>–</sup> under the hydrothermal condition. The complex...
In this paper, we study the problem of answering visual analogy questions. These questions take t... more In this paper, we study the problem of answering visual analogy questions. These questions take the form of image A is to image B as image C is to what. Answering these questions entails discovering the mapping from image A to image B and then extending the mapping to image C and searching for the image D such that the relation from A to B holds for C to D. We pose this problem as learning an embedding that encourages pairs of analogous images with similar transformations to be close together using convolutional neural networks with a quadruple siamese architecture. We introduce a dataset of visual analogy questions in natural images, and show first results of its kind on solving analogy questions on natural images.
2009 International Conference on Computer and Automation Engineering, 2009
AbstractSteganography is the art and science of hiding secret data to provide a safe communicati... more AbstractSteganography is the art and science of hiding secret data to provide a safe communication between two parties and it is a prominent branch in the information hiding research area. This paper presents a new steganographic method based on predictive coding and embeds ...
2010 11th International Conference on Control Automation Robotics & Vision, 2010
ABSTRACT Active contour models are widely used in extracting object boundaries. However, most of ... more ABSTRACT Active contour models are widely used in extracting object boundaries. However, most of these methods usually fail to capture concave boundaries properly and impose high computational cost. In this paper, a new SOM-based active contour model which introduces the Conscience and Archiving mechanisms (CASOM) is proposed to extend the Batch SOM method and eliminate its deficiencies. The performance of the proposed method is evaluated by some experiments on a set of grayscale images. Experimental results are compared with those of the BSOM in terms of accuracy and convergence speed. The results reveal that compared to BSOM, the proposed method requires less computations for converging to the object boundaries and extracts the boundaries of complex objects more accurately, even in the presence of weak or broken edges.
2009 International Conference of Soft Computing and Pattern Recognition, 2009
AbstractSteganography is a branch in the information hiding research area which aims to conceal ... more AbstractSteganography is a branch in the information hiding research area which aims to conceal data transmission between two parties. In this paper a new method based on predictive coding is proposed which employs Quantization Index Modulation (QIM) for quantizing error ...
Two coordination complexes, [Mn<sub>2</sub>(pydco)<sub>2</sub>(phen)<s... more Two coordination complexes, [Mn<sub>2</sub>(pydco)<sub>2</sub>(phen)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·2H<sub>2</sub>O (<b>1</b>) and [Mn(3-pyco)<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>] (<b>2</b>), based on Mn(II), pyridine-2,5-dicarboxylic acid <i>N</i>–oxide (H<sub>2</sub>pydco) and 1,10-phenanthroline (phen) as organic ligands have been synthesized and characterized by elemental analyses, infrared spectroscopy and single crystal X-ray diffraction. We have synthesized the first Mn(II) complex of H<sub>2</sub>pydco. Interestingly, <i>in situ</i> hydrothermal decarboxylation occurred in <b>2</b> and (pydco)<sup>2–</sup> was totally transformed into pyridine-3-carboxylate <i>N</i>–oxide (3-pyco)<sup>–</sup> under the hydrothermal condition. The complex...
In this paper, we study the problem of answering visual analogy questions. These questions take t... more In this paper, we study the problem of answering visual analogy questions. These questions take the form of image A is to image B as image C is to what. Answering these questions entails discovering the mapping from image A to image B and then extending the mapping to image C and searching for the image D such that the relation from A to B holds for C to D. We pose this problem as learning an embedding that encourages pairs of analogous images with similar transformations to be close together using convolutional neural networks with a quadruple siamese architecture. We introduce a dataset of visual analogy questions in natural images, and show first results of its kind on solving analogy questions on natural images.
2009 International Conference on Computer and Automation Engineering, 2009
AbstractSteganography is the art and science of hiding secret data to provide a safe communicati... more AbstractSteganography is the art and science of hiding secret data to provide a safe communication between two parties and it is a prominent branch in the information hiding research area. This paper presents a new steganographic method based on predictive coding and embeds ...
2010 11th International Conference on Control Automation Robotics & Vision, 2010
ABSTRACT Active contour models are widely used in extracting object boundaries. However, most of ... more ABSTRACT Active contour models are widely used in extracting object boundaries. However, most of these methods usually fail to capture concave boundaries properly and impose high computational cost. In this paper, a new SOM-based active contour model which introduces the Conscience and Archiving mechanisms (CASOM) is proposed to extend the Batch SOM method and eliminate its deficiencies. The performance of the proposed method is evaluated by some experiments on a set of grayscale images. Experimental results are compared with those of the BSOM in terms of accuracy and convergence speed. The results reveal that compared to BSOM, the proposed method requires less computations for converging to the object boundaries and extracts the boundaries of complex objects more accurately, even in the presence of weak or broken edges.
2009 International Conference of Soft Computing and Pattern Recognition, 2009
AbstractSteganography is a branch in the information hiding research area which aims to conceal ... more AbstractSteganography is a branch in the information hiding research area which aims to conceal data transmission between two parties. In this paper a new method based on predictive coding is proposed which employs Quantization Index Modulation (QIM) for quantizing error ...
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