METHOD FOR SIGNAL ADAPTIVE FILTERING, SIGNAL ADAPTIVE FILTER AND MACHINE-READABLE CARRIER (VARIANTS) FOR STORING THEIR PROGRAMS Russian patent published in 2005 - IPC

FIELD: technologies for data filtering.

SUBSTANCE: when a frame is formed of blocks of preset size, following operations are performed: generation of blocking information for decrease of blocking effect and contouring information for decrease of contouring noise from coefficients of preset pixels of upper and left limiting areas of data block, when a frame, received by decomposition of image data in a stream of binary bits for inverse quantizing, is an inner frame, and adaptive filtering of image data, passing through inverse quantizing and inverse discontinuous cosine transformation, in accordance to generated information of blocking and information of contouring. That is why blocking effect and contouring noise can be removed from an image, restored from image on basis of blocks, to improve the image, restored from compression.

EFFECT: decreased blocking effect and contouring noise.

2 cl, 7 dwg