In recent years, the image retargeting (IR) problem has been discussed as one of the challenging topics in the field of image processing in different applied domains. In this paper, a multi operators hybrid method is proposed (IR-WCO2C)... more
In recent years, the image retargeting (IR) problem has been discussed as one of the challenging topics in the field of image processing in different applied domains. In this paper, a multi operators hybrid method is proposed (IR-WCO2C) to improve performance of an IR system, which is performed in three subsystems. Firstly, the identification precision of important regions is enhanced using a feature extraction technique based on wavelet coefficients (WC) then identified the saliency map of images. In second subsystem , this saliency map is used to improve performance of seam carving process instead of the saliency map identified by conventional methods. Finally, the act of operators selection is improved using metaheuristic techniques to optimize process of operators combination. Findings reveal that our method, IR-WCO2C provided the highest precision (0.74) in the IR process. Also, IR-WCO2C provided an improvement of 20% over the previous methods in different stages of the IR.
The increased popularity of stereo photography due to the availability of stereoscopic lens and cameras has aroused research interest in stereo image editing. In this paper, we present an automatic, aesthetic-based warping approach to... more
The increased popularity of stereo photography due to the availability of stereoscopic lens and cameras has aroused research interest in stereo image editing. In this paper, we present an automatic, aesthetic-based warping approach to recompose both the left and right stereo image pair simultaneously using a global optimization algorithm. To maximize image aesthetics, we minimize a set of aesthetics errors formulated based on selected photographic composition rules during the warping process. In addition, our algorithm attempts to preserve the stereoscopic properties by minimizing disparity change and vertical drift in the resulting image. Experimental results shows that our approach successfully relocate salient objects according to the selected photographic rules to enhance compositional aesthetics and maintain disparity consistency to create a comfortable 3D viewing experience.
