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:
Dec. 05, 2017
Filed:
Mar. 08, 2017
Kwangwoon University Industry-academic Collaboration Foundation, Seoul, KR;
Donggyu Sim, Seoul, KR;
Yongjo Ahn, Seoul, KR;
Abstract
A method for fast transform coding in image compression is provided. The method includes performing prediction with respect to a current block, calculating a prediction error with respect to the current block, performing transform and quantization with respect to the current block, performing dequantization and inverse transform with respect to a transform coefficient generated through the transform and quantization, generating a reconstruction signal by summing a prediction signal generated in the performing of the prediction and a residual signal generated in the performing of the dequantization and inverse transform, calculating a rate-distortion (RD) cost related to the reconstruction signal, determining whether a size of the current block is a minimum block size, partitioning the current block into a plurality of sub-blocks, and performing transform coding with respect to the sub-blocks in response to determination that the size of the current block is not the minimum block size.