Context-Based Automatic Local Image Enhancement [chapter]

Sung Ju Hwang, Ashish Kapoor, Sing Bing Kang
2012 Lecture Notes in Computer Science  
In this paper, we describe a technique to automatically enhance the perceptual quality of an image. Unlike previous techniques, where global statistics of the image are used to determine enhancement operation, our method is local and relies on local scene descriptors and context in addition to high-level image statistics. We cast the problem of image enhancement as searching for the best transformation for each pixel in the given image and then discovering the enhanced image using a formulation
more » ... based on Gaussian Random Fields. The search is done in a coarse-to-fine manner, namely by finding the best candidate images, followed by pixels. Our experiments indicate that such context-based local enhancement is better than global enhancement schemes. A user study using Mechanical Turk shows that the subjects prefer contextual and local enhancements over the ones provided by existing schemes.
doi:10.1007/978-3-642-33718-5_41 fatcat:xtb7jm244rapbfnggyjdzambca