Title:
IMAGE DATA POST-PROCESSING METHOD AND DEVICE THEREFOR
Document Type and Number:
Japanese Patent JP3717975
Kind Code:
B2
Abstract:
PURPOSE: To improve image quality by removing or reducing blocking phenomena indicated at the boundary of the block of decoded image data.
CONSTITUTION: The decoded image data of a present frame from an image signal decoder are stored in a second frame memory 42 and impressed to a threshold value generation circuit 47. Then, a stored target picture element value is taken out and supplied to the buffer 48a of a pixel data correction unit 48 and picture elements composed of a target picture element and the picture element adjacent to it are supplied to a filter 44. Then, the filter 44 generates target pixel data and the pixel data are supplied to a pixel data evaluation circuit 45. In the meantime, the circuit 47 generates a predetermined threshold value and the threshold value is supplied to a second comparator circuit 45b and a pixel data correction circuit 48c inside the pixel data correction unit 48 thereafter. The circuit 48c outputs corrected target pixel data.
Inventors:
Kim
Application Number:
JP18814695A
Publication Date:
November 16, 2005
Filing Date:
June 30, 1995
Export Citation:
Assignee:
Daewoo Electronics Corporation
International Classes:
H04N5/937; H03M7/30; H04N19/117; H04N19/134; H04N19/14; H04N19/176; H04N19/192; H04N19/196; H04N19/423; H04N19/44; H04N19/50; H04N19/51; H04N19/60; H04N19/625; H04N19/80; H04N19/86; H04N19/91; H04N19/93; H04N5/21; (IPC1-7): H04N7/30
Domestic Patent References:
| JP4970A | ||||
| JP5304610A |
Attorney, Agent or Firm:
Yoichi Oshima
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