Method of and apparatus for deciding intraprediction mode
AssigneeSamsung Electronics Co., Ltd.
InventorMin-kyu Park
Life of this patent
Estimating the term…
Abstract
A method of and apparatus are provided for deciding an intraprediction mode, in which pixels of an input block are labeled according to their pixel values and a directivity is extracted from pixels having the same label to decide the intraprediction mode. The method includes assigning labels to the pixels of the input block according to the pixel values of the pixels, scanning the labeled input block according to a scan table and calculating mode counts of intraprediction modes by counting the intraprediction mode if the pixels at predetermined positions according to a direction of the intraprediction mode are assigned the same label, and deciding the intraprediction mode for the input block using the calculated mode counts.
Claims21
A method of deciding an intraprediction mode of a video, the method comprising:
- (a) assigning labels to pixels of an input block according to pixel values of the pixels;
- (b) scanning the labeled input block according to a scan table, and calculating mode counts of intraprediction modes by counting the intraprediction mode if the pixels at predetermined positions according to a direction of the intraprediction mode are assigned the same label;
- and
- (c) deciding the intraprediction mode for the input block using the calculated mode counts.
An apparatus for deciding an intraprediction mode of a video, the apparatus comprising:
- a labeling unit which assigns labels to pixels of an input block according to pixel values of the pixels;
- a scanning unit which scans the labeled input block according to a scan table and calculates mode counts of intraprediction modes by counting the intraprediction mode if the pixels at predetermined positions according to a direction of the intraprediction mode are assigned the same label;
- and
- a prediction mode decision unit which decides the intraprediction mode for the input block using the calculated mode counts.
A computer readable recording medium storing a computer program for performing a method of deciding an intraprediction mode of a video, the method comprising:
- assigning labels to pixels of an input block according to pixel values of the pixels;
- scanning the labeled input block according to a scan table, and calculating mode counts of intraprediction modes by counting the intraprediction mode if the pixels at predetermined positions according to a direction of the intraprediction mode are assigned the same label;
- and
- deciding the intraprediction mode for the input block using the calculated mode counts.
Dependencies are inferred from the claim text.