Apparatus for producing a noise-reducded image signal from an input image signal
First Claim
Patent Images
1. An apparatus for producing a noise-reduced image signal from an input image signal having relatively more noise than the noise-reduced image signal, comprising:
- block producing means for producing a plurality of noise-containing block signals from the input image signal, each of the noise-containing block signals representing a portion of an image represented by the input image signal;
class code producing means for producing a class code for each of the plurality of noise-containing block signals, each class code identifying low noise image data corresponding with an image portion and having a noise level lower than that of a noise-containing block for which the class code was produced; and
noise-reduced image signal producing means for producing the noise-reduced image signal based on the class codes produced by the class code producing means.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus are provided for producing a noise-reduced image signal from an input image signal having relatively more noise. The input image signal is divided into a number of block signals. A class code is produced for each of the block signals and used to produce low noise image data which is either output as a pixel or block of the noise-reduced image signal or is used to produce the same.
-
Citations
15 Claims
-
1. An apparatus for producing a noise-reduced image signal from an input image signal having relatively more noise than the noise-reduced image signal, comprising:
-
block producing means for producing a plurality of noise-containing block signals from the input image signal, each of the noise-containing block signals representing a portion of an image represented by the input image signal; class code producing means for producing a class code for each of the plurality of noise-containing block signals, each class code identifying low noise image data corresponding with an image portion and having a noise level lower than that of a noise-containing block for which the class code was produced; and noise-reduced image signal producing means for producing the noise-reduced image signal based on the class codes produced by the class code producing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification