This paper presents a method to obtain the approximate indirect diffuse reflection on a dynamic object, caused by a diffuse or a moderately glossy environment. Instead of tracing rays to find the incoming illumination, we look up the indirect illumination from a cube map rendered from the reference point that is in the vicinity of the object. However, to cope with the difference between the inc...

In retinex model, images are considered as a combination of two components: illumination and reflectance. However, decomposing an image into the reflectance is ill-posed problem. This paper presents new approach to estimate for low-light enhancement. work contains three major tasks: estimation structure-aware initial illumination, refinement estimated final correction lightness in refined illum...

Degradation of underwater images is different from normal images. In underwater imaging light interact with water in two ways, scattering and absorption. The scattering and absorption together is called attenuation of light in water. This attenuation is wavelength dependent. Because of scattering and absorption, underwater images are affected by back scattering, forward scattering and absorptio...