Title:
METHOD AND APPARATUS FOR ENCODING/DECODING FOR SUPPRESSION OF BLOCKING ARTIFACT
Document Type and Number:
Japanese Patent JPH0722962
Kind Code:
A
Abstract:
PURPOSE: To remove a blocking artifact on a block boundary by decoding and reproducing compressed data in each frame, comparing the reproduced frame data with the original frame data and generating a post processing variable. CONSTITUTION: A blocking artifact measuring part 200 in an encoding device changes a post processing variable a in accordance with the degree of a measured blocking artifact and outputs the changed variable. When the post processing variable α outputted from the measuring part 200 is '0', a blocking artifact does not exist on a block boundary part in a corresponding frame, i.e., the frame of video data from an inverse transformer 13, so that an adaptive low pass filter 300 in a decoding device passes all input video data. When the variable α is '1', the degree of the blocking artifact is violent on the block boundary part, so that the filter 300 is turned to an LPF and filters the block boundary part of input video data to remove existing blocking artifact components.
Inventors:
JEONG JE-CHANG (KR)
Application Number:
JP9983093A
Publication Date:
January 24, 1995
Filing Date:
April 26, 1993
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
G08C19/28; H03M7/40; H03M7/28; H03M7/30; H04N7/12; H04N19/60; H04N19/86; (IPC1-7): H03M7/40
Domestic Patent References:
| JPH0262177A | 1990-03-02 |
Attorney, Agent or Firm:
Tadahiko Ito (1 outside)
Next Patent: サイドパネル付き保持具