Color quantization of images
نویسندگان
چکیده
منابع مشابه
Color quantization of images
1 Many image display devices allow only a limited number of colors to be simultaneously displayed. Usually, this set of available colors, called a color palette, may be selected by a user from a wide variety of available colors. Such device restrictions make it particularly difficult to display natural color images since these images usually contain a wide range of colors which must then be qua...
متن کاملOn Spatial Quantization of Color Images
Image quantization and digital halftoning, two fundamental image processing problems, are generally performed sequentially and, in most cases, independent of each other. Color reduction with a pixel-wise defined distortion measure and the halftoning process with its local averaging neighborhood typically optimize different quality criteria or, frequently, follow a heuristic approach without ref...
متن کاملSequential scalar quantization of color images
An efficient algorithm for color image quantization is proposed based on a new vector quantization technique that we call sequential scalar quantization. The scalar components of the 3-D color vector are individually quantized in a predetermined sequence. With this technique, the color palette is designed very efficiently, while pixel mapping is performed with no computation. To obtain an optim...
متن کاملFast Color Quantization of JPEG Images
The JPEG image compression scheme is the standard method for compressing true color images. Since most computer systems have a clut-oriented graphic device, a color quantization process is required for displaying true color images on such systems. Unfortunately, the general color quantization problem is NP-hard and is therefore solved by suboptimal heuristic approaches with reduced visual quali...
متن کاملFast Color Quantization of Compressed True Color Images
The ever increasing spectral and color resolution of digital images used in imaging tools like multimedia applications in computer communication networks has increased the demand for compression techniques to improve the e ciency of transmission and storage. Several approaches which attempt to exploit the statistical properties of image signals have been proposed for twodimensional color image ...
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ژورنال
عنوان ژورنال: IEEE Transactions on Signal Processing
سال: 1991
ISSN: 1053-587X
DOI: 10.1109/78.107417