Electronic picture reproduction device
AssigneeDeutsche Thomson-Brandt GmbH
InventorWolfgang Hartnack
Life of this patent
Estimating the term…
Abstract
In a method of reproducing a television picture composed of picture points represented by digital signals, the picture points are grouped into blocks which are separated by block edges. The blocks are one of at least two types of blocks, picture point values for points in one type of block are calculated using one set of rules and picture point values for another type of block are calculated using another set of rules. Values for picture points within the block edges are obtained by combining the values obtained for the respective blocks.
Claims10
In a system for processing a video signal representing a single image constituted by a plurality of image processing blocks with adjacent blocks being separated by a border region, each block containing a plurality of picture elements (pixels), each block exhibiting either first and second different types of image motion, associated with static image content or dynamic image content and each block having a perimeter pixel region comprising edge pixels and pixels in the immediate vicinity of said edge pixels;
- perimeter pixel blending apparatus for selectively modifying perimeter pixel values to soften border regions of adjacent blocks when exhibiting different types of motion, comprising:
- a signal source providing a digital representation of said video signal;
- a signal processor responsive to said video signal for providing a control signal indicating the type of motion of said first or second types respectively associated with said image blocks;
- a digital signal processor responsive to said control signal and to said digital representation of said video signal, for processing image blocks in accordance with the type of motion identified by said control signal for respective blocks;
- an adaptive signal translating network responsive to an output signal from said digital processor for selectively providing, when a first block and an adjacent second block exhibit different types of motion, an output video signal with original edge pixel values of said first block substantially exclusive of inner pixels of said first block selectively modified as a function of both (a) a first rule is used to determine the original pixel values of said first block which exhibits said static image content, and (b) a second rule is used to determine pixel values in a block which exhibits said dynamic image content;
- and
- an image display device responsive to said output video signal from said translating network.
Dependencies are inferred from the claim text.