The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2013
Filed:
Oct. 30, 2007
Zhong Xue, Singapore, SG;
Sheng Mei Shen, Singapore, SG;
Teck Wee Foo, Singapore, SG;
Chak Joo Lee, Singapore, SG;
Shinya Kadono, Nishinomiya, JP;
Zhong Xue, Singapore, SG;
Sheng Mei Shen, Singapore, SG;
Teck Wee Foo, Singapore, SG;
Chak Joo Lee, Singapore, SG;
Shinya Kadono, Nishinomiya, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A method for coding a picture segmented into a plurality of blocks. The method decodes the coded blocks to produce a reproduced image. A filter selection parameter determines a threshold value for each quantization parameter, so as to change between a mode to effect coding distortion removal by a filter and a mode not to effect the coding distortion removal. The determined filter selection parameter is coded. A difference between pixel values of pixels in the adjacent blocks on both sides of a boundary between adjacent blocks forming the reproduced image is compared with the determined threshold value determined by the filter selection parameter, and the coding distortion is removed using the filter when the difference is smaller than the threshold value, and not removed when the difference is larger than the threshold value.