Low-Light Image Enhancement Using Sped-Up solver Method via Illumination Map Estimation
Keywords:
Illumination Estimation, Illumination Transmission,Low Light Image Enhancement.Abstract
In the present scenario digital images are playing very important role in several applications. When one captures images during night times or low light conditions, the images often suffer from low visibility. In order to improve the quality of an image, image enhancement can be used. This type of low light images may decrease the performance of computer vision and other multimedia algorithms that are essentially designed for high-quality inputs. In order to estimate the high quality image in this paper we proposed a low light image enhancement method. In this method, first we estimate the illumination of each pixel individually by finding the maximum value in R, G and B channels. Further we refine the initial illumination map by imposing a structure prior on it, as the final illumination map. The noise can be removed by using BM3D method. For a low light image enhancement we consider the one parameter called Lightness order error (LOE) which gives the light source direction and the lightness variations.
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