Degradation of images by the atmosphere is a familiar problem. For example, when terrain is imaged from a forward-looking airborne camera, the atmosphere degradation causes a loss in both contrast and color information. Enhancement of such images is a difficult task because of the complexity in restoring both the luminance and the chrominance while maintaining good color fidelity. One particular problem is the fact that the level of contrast loss depends strongly on wavelength. A novel method is presented for the enhancement of color images. This method is based on the underlying physics of the degradation process, and the parameters required for enhancement are estimated from the image itself.
© 2001 Optical Society of America
(010.1310) Atmospheric and oceanic optics : Atmospheric scattering
(100.2980) Image processing : Image enhancement
(100.3020) Image processing : Image reconstruction-restoration
(280.1310) Remote sensing and sensors : Atmospheric scattering
(290.1310) Scattering : Atmospheric scattering
KokKeong Tan and John P. Oakley, "Physics-based approach to color image enhancement in poor visibility conditions," J. Opt. Soc. Am. A 18, 2460-2467 (2001)