Pallabi Ghosh

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There are various methods available in the literature for improving the visual quality of an image. Contrast enhancement of an image by histogram equalization is one such technique. But histogram equalization alone results in data loss and also the mean brightness of the resultant output image approaches to the middle gray level. In this paper, the edge(More)
Introduction Many researches in computer vision have been focused on developing algorithms to accurately determine depth maps. In stereo vision, a pair of cameras at two different locations capture a left and a right image which are slightly different images of the same scene. Due to different locations of the cameras, a 3D point will show up at different(More)
Depth estimation using stereoscopy can be done by comparing the relative positions of the same (point) object displayed in the two different images captured by two cameras. Quantization errors that follow a square law with respect to distance are one of the errors that arise during depth estimation. The solution to limit this error is to use a multi camera(More)
The widespread penetration of counterfeit integrated circuits (ICs) is not only a major threat to the electronic goods supply chain, but also constitute a great threat to national security. Image processing based counterfeit IC design techniques are promising, but currently often suffer from high computational complexity and requirement of expensive image(More)
Image content or metadata editing software availability and ease of use has resulted in a high demand for automatic image tamper detection algorithms. Most previous work has focused on detection of tampered image content, whereas we develop techniques to detect metadata tampering in outdoor images using sun altitude angle and other meteorological(More)
Imagine it’s your child’s graduation. After the ceremony when taking a photo with all their friends, it often doesn’t turn out to be as good as you had hoped. There can be several reasons, but the main reason being difficulty in coordinating everyone at the same moment. For example, if one of their friend’s mom is taking the photo at the same time, their(More)
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