In this paper, we propose a new adaptive approach of color quantization. It can significantly reduce the time consumption during the process comparedwith availablemethods but still maintains a good quality (greater than 30 dB of PSNR). It is implemented as a part of the media stream compression algorithms for a True Color Signboard System. We adapt and create some techniques to speed up the pro...

Among the existing image fusion algorithms, Intensity used one. When the IHS method is used for IKONOS imagery, there is a significant color distortion, due mainly to the range of wavelengths in an IKONOS Pan ima regions are far larger than the grey values of intensity (I) and that vegetation appears of relatively high reflectance in Near Infrared (NIR) and Pan bands we propose a new technique ...

We propose a new definition of the total variation (TV) norm for vector-valued functions that can be applied to restore color and other vector-valued images. The new TV norm has the desirable properties of 1) not penalizing discontinuities (edges) in the image, 2) being rotationally invariant in the image space, and 3) reducing to the usual TV norm in the scalar case. Some numerical experiments...

A pixel-level fusion technique for RGB representation of multispectral images is proposed. The technique results in highly correlated RGB components, a fact which occurs in natural colour images and is strictly related to the colour perception attributes of the human eye. Accordingly, specific properties for the covariance matrix of the final RGB image are demanded. Mutual information is employ...