Patent ID: 8542726
Filing Date: 2013-09-24
Classification: G06F,H04N

Abstract:
1. A method comprising: determining a directional property of one or more images to be processed with a discrete cosine transform (DCT) operation, the determining the directional property including determining a direction for a current block of an image based at least in part on one or more directions determined for one or more adjacent blocks of the current block, the determining the direction for the current block of the image including constructing an oriented weighted graph that possesses one or more layers of one or more edges, the one or more edges of each layer representing a directional mode decision of a block and one or more weights of the one or more edges each representing a performance of an adjacent block in a related directional mode decision; separating the DCT operation into one or more DCT primal operations; determining an angle of the direction for applying a respective DCT primal operation of the one or more DCT primal operations; and applying at least the respective DCT primal operation along the angle of the direction of the directional property to perform the DCT operation.