Title:
信号適応フィルタリング方法、信号適応フィルタ及びこれを記録した記録媒体
Document Type and Number:
Japanese Patent JP3590351
Kind Code:
B2
Abstract:
A signal adaptive filtering method for reducing blocking effect and ringing noise, a signal adaptive filter, and a computer readable medium, The signal adaptive filtering method capable of reducing blocking effect and ringing noise of image data when a frame is composed of blocks of a predetermined size includes the steps of:a) generating blocking information for reducing the blocking effect and ringing information for reducing the ringing noise, from coefficients of predetermined pixels of the upper and left boundary regions of the data block when a frame obtained by deconstrucing a bitstream image data for inverse quantization is an intraframe; andb) adaptively filtering the image data passed through inverse quantization and inverse discrete cosine transform according to the generated blocking information and ringing information.Therefore the blocking effect and ringing noise can be eliminated from the image restored from the block-based image, thereby enhancing the image restored from compression.
Inventors:
Yun Lul Lee
Hyun Wook Park
Hyun Wook Park
Application Number:
JP2000503605A
Publication Date:
November 17, 2004
Filing Date:
June 18, 1998
Export Citation:
Assignee:
Samsung Electronics Company Limited
International Classes:
G06F17/30; G06T5/00; H04N5/21; G06T5/40; G06T5/50; G06T9/00; H03M7/30; H04N7/24; H04N19/117; H04N19/134; H04N19/136; H04N19/14; H04N19/159; H04N19/176; H04N19/196; H04N19/503; H04N19/51; H04N19/61; H04N19/625; H04N19/80; H04N19/86; (IPC1-7): H04N7/30
Domestic Patent References:
| JP8149470A | ||||
| JP5316361A | ||||
| JP6343169A | ||||
| JP7212759A | ||||
| JP3267888A |
Attorney, Agent or Firm:
Masatake Shiga