发明名称 |
Methods for segmenting and encoding an image, and corresponding devices |
摘要 |
A frame of pixels is segmented into a plurality of blocks each having a block type by a method including the steps of:
a) performing an initial segmentation of the frame into a set of initial blocks, thus determining, for each initial block, a block type associated with the concerned initial block;b) determining, for each block type, an associated set of quantizers based on data corresponding to pixels of blocks having said block type;c) selecting, among a plurality of possible segmentations defining an association between each block of this segmentation and an associated block type, the segmentation which minimizes an encoding cost estimated based on a measure of the rate necessary for encoding each block using the set of quantizers associated with the block type of the encoded block according to the concerned segmentation. |
申请公布号 |
US9142036(B2) |
申请公布日期 |
2015.09.22 |
申请号 |
US201313861266 |
申请日期 |
2013.04.11 |
申请人 |
Canon Kabushiki Kaisha |
发明人 |
Lasserre Sébastien;Le Leannec Fabrice |
分类号 |
G06T9/00 |
主分类号 |
G06T9/00 |
代理机构 |
Canon USA Inc. IP Division |
代理人 |
Canon USA Inc. IP Division |
主权项 |
1. A method for segmenting a frame of pixels into a plurality of blocks each having a block type, comprising the steps of:
a) performing an initial segmentation of the frame into a set of initial blocks, thus determining, for each initial block, a block type associated with the concerned initial block; b) determining, for each block type, an associated set of quantizers based on data corresponding to pixels of blocks having said block type; c) selecting, among a plurality of possible segmentations defining an association between each block of this segmentation and an associated block type, the segmentation which minimizes an encoding cost estimated based on a measure of the rate necessary for encoding each block using the set of quantizers associated with the block type of the encoded block according to the concerned segmentation. |
地址 |
Tokyo JP |