5 search results - page 1 / 1 » Image Dequantization: Restoration of Quantized Colors |
CGF
2007
13 years 7 months ago
2007
Color quantization replaces the color of each pixel with the closest representative color, and thus it makes the resulting image partitioned into uniformly-colored regions. As a c...
ICIP
2009
IEEE
14 years 8 months ago
2009
IEEE
We propose a new color de-quantizing method for paletted images based on maximizing the sparseness of the overcomplete wavelet analysis of the estimation within the consistency se...
TIP
2002
13 years 7 months ago
2002
Abstract--We address the problem of computing a local orientation map in a digital image. We show that standard image gray level quantization causes a strong bias in the repartitio...
ICIP
2005
IEEE
14 years 9 months ago
2005
IEEE
JPEG 2000 is a lossy integer-to-integer transform-based compression method that first quantizes the separable 2-D wavelet transform coefficients, then entropy codes them. The imag...
ICMCS
2006
IEEE
14 years 1 months ago
2006
IEEE
- Restoration of color-quantized images in which error diffusion is involved is rarely addressed in the literature. Conventional restoration algorithms were generally proposed for ...