Method for coding and an apparatus based on a DC prediction value

摘要

The disclosure relates to encoding and decoding image information. The encoding comprises receiving a block of pixels; determining a set of potential reference samples for the block of pixels; selecting a subset of the set of potential reference samples to be used as reference samples for the block of pixels; and using the selected reference samples to determine a DC prediction value for the block of pixels. A prediction error is determined for a pixel in the block of pixels on the basis of the DC prediction value. The decoding comprises receiving an encoded block of pixels; determining reference samples for the encoded block of pixels; and using the determined reference samples to define a DC prediction value for the block of pixels. A prediction error is received for a pixel of the encoded block of pixels. The pixel value is reconstructed on the basis of the DC prediction value.

主权项

1. A method comprising:
receiving a block of pixels; determining a set of potential reference samples for the block of pixels, wherein the set of potential reference samples for the block of pixels comprises at least a part of the pixels of an encoded neighboring block which is adjacent to the block of pixels; selecting a subset of the set of potential reference samples to be used as reference samples for the block of pixels, wherein the selected subset of reference samples comprises sets of n consecutive reference samples with m reference samples between the sets wherein variables n and m are positive integers; and using the selected subset of reference samples to determine a DC prediction value for the block of pixels.