US Patent No. 9,432,697

MOTION PICTURE ENCODING APPARATUS AND METHOD THEREOF


Patent No. 9,432,697
Issue Date August 30, 2016
Title Motion Picture Encoding Apparatus And Method Thereof
Inventorship Sung-Chang Lim, Daejeon (KR)
Ha Hyun Lee, Daejeon (KR)
Hui Yong Kim, Deajeon (KR)
Se Yoon Jeong, Daejeon (KR)
Suk Hee Cho, Daejeon (KR)
Hae Chul Choi, Daejeon (KR)
Jong Ho Kim, Daejeon (KR)
Jin Ho Lee, Daejeon (KR)
Jin Soo Choi, Daejeon (KR)
Jin Woo Hong, Daejeon (KR)
Dong Gyu Sim, Seoul (KR)
Seoung Jun Oh, Seoul (KR)
Gwang Hoon Park, Yongin-si (KR)
Mun Churl Kim, Daejeon (KR)
Neung Joo Hwang, Seoul (KR)
Sea Nae Park, Seoul (KR)
Assignee ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR) KWANGW...

Claim of US Patent No. 9,432,697

1. A video decoding method comprising:
determining whether a current block is a fist block with a size that is not a minimum size (4×4) or a second block with a
size that is a minimum size (4×4);

when the current block is the second block, obtaining, from a bitstream, information indicating whether the current block
is inverse-transformed or not, wherein the information is not signaled for the first block and is signaled for the second
block;

performing a dequantization on residual coefficients relating to the current block;
obtaining a residual image by performing, based on the information indicating whether the current block is inverse-transformed
or not, an inverse-transform on dequantized residual coefficients, the inverse-transform being performed using a discrete
cosine transform (DCT); and

generating a reconstruction image using the residual image and a prediction image resulting from performing a motion compensation.