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A disparity map is usually obtained by stereo images using a stereo matching method. Edge boundaries in the disparity map separate two different objects. Therefore, edge preservation is one of important issues in the stereo matching method. A conventional distance transform was proposed to preserve edge boundaries in the disparity map. However, this method has a complexity problem because of its iterative...
To increase resolutions, image interpolation has been widely investigated for several years. Especially, the interpolation techniques for super resolution televisions become more and more important since the most video programs are only with high definition. The linear-based interpolation algorithms bring out the jaggy noise conspicuously. Recently, the new edge-directed interpolation (NEDI) is proposed...
Image segmentation is used in computer vision, medical imaging, and biological imaging to locate object boundaries and to group similar pixels together to form a set of coherent image regions. The important factors of clustering are similarity, proximity, and good continuation, which lead to visually meaningful segmentation. On the contrary, there are some problems of visual grouping such as over-segmentation,...
In this paper, a new technique, i.e. decremental depth bunches have been presented where two facial discriminating mechanisms have also been implemented for recognizing the individuals. Notably, based on variations of the depth values, different bunches of face regions (i.e. the small components) are extracted by differentiating the depth information that eventually describes detailed facial surface...
Level set methods (LSMs) have been extensively investigated for medical image segmentation. However, there are a few inherent drawbacks in common level set formulations using image variation or region competition. For example, edge-based LSMs are susceptible to weak or broken boundaries, while region-based ones are often dominated by suboptimal solutions. By incorporating the functional of fuzzy controlling,...
This paper describes CheckIt: a mobile phone based optical mark recognition(OMR) system which is used for automatic checking of the user response sheets. It exploits prior information about the OMR sheet layout, which helps in achieving high speed and accuracy. The system incorporates following interdependent modules: (i) computer vision and image processing; (ii) computer communication and networking;...
Organic light-emitting diode(OLED) has emerged as the new generation technique to mobile displays. Although OLED plane has many advantages compared to LCD, it still accounts for a large amount of the power consumption in mobile devices. In this paper, we propose a log-function power constrained algorithm(LFPC) to save the power of OLED display. We choose superpixel as the basic unit and computer a...
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