Patent ID: 8666177
Filing Date: 2014-03-04
Classification: H04N

Abstract:
1. A method for encoding an image block of an image using a texture-pattern-adaptive partitioned block transform, wherein said image block comprises N times M pixels with N being equal to or larger than M, said method comprising the steps of: a) partitioning the image block according to a current texture-pattern-adaptive partition associated with a current texture-pattern into a first sub-set of pixels and at least a second sub-set of pixels; b) using a texture-pattern associated scan order for arranging the pixels of the first sub-set in a meta-sequence of pixel sequences, said texture-pattern associated scan order being associated with the current texture-pattern and each of the pixel sequences comprising at most N pixels; c) generating a further meta-sequence of at most M further pixel sequences wherein each of the further pixel sequences comprises either one of the pixel sequences or a concatenation of pixel sequences of a sub-sequence of the meta-sequence with each of the further pixel sequences comprising at most N pixels; d) generating coefficient sequences by transforming the further pixel sequences; e) generating further coefficient sequences by one-dimensional transformations across the coefficient sequences; f) generating a yet further coefficient sequence by quantizing and scanning the coefficients comprised in the further coefficient sequences wherein scanning is done according to an encoding scan order; g) entropy encoding the yet further coefficient sequence; and h) entropy encoding an indication associated with the current texture-pattern.