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Adaptive intra mode selection

An intra-frame prediction mode and video frame technology, applied in video encoding and video decoding. It can solve the problem of wasting coding bits and achieve the effect of reducing bit capacity and maintaining quality

Inactive Publication Date: 2011-02-09
TELEFON AB LM ERICSSON (PUBL)
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  • Description
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AI Technical Summary

Problems solved by technology

Thus, encoding bits are wasted when encoding an intra prediction mode results in the same or similar predictions (i.e. predicted blocks)

Method used

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Embodiment Construction

[0059] The present invention will be explained in detail below by way of example embodiments and will be better understood if read with reference to the accompanying drawings. In the figures, each block represents a processing step having data and / or control information as input and / or output. Data is represented by solid arrows and can be a pixel block or a pixel frame. Control information is indicated by dashed arrows. Like reference numerals are used for like features in the drawings.

[0060] However, each block in the figure representing a processing step may be implemented by a dedicated hardware processor. Similarly, data and control information may be implemented in hardware as electronic signals for communication and control, respectively, between various hardware processors.

[0061] Video encoding and decoding may be performed in two associated processors or methods to enable digital communication of video frames having a reduced bandwidth or bit rate relative to...

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Abstract

In video encoding and decoding predictions may be generated by intra-frame prediction. Intra-frame prediction uses reconstructed pixels in a reconstructed frame. Intra-frame prediction is performed by extending the reconstructed pixels into a predicted block using intra-frame prediction modes, each intra-frame prediction mode indicating a direction of the extension. In order to reduce the number of possible intra- frame prediction modes, a subset is selected from a predetermined set of possible intra- frame prediction modes. A subset of intra-frame prediction modes can be created by forming preselection sets of intra-frame prediction modes on the basis of similarity of their associated predicted blocks and selecting a representative intra-frame prediction mode from each preselection set.

Description

technical field [0001] The present invention relates to a method of encoding a video frame into an encoded video frame, a method of decoding an encoded video frame into a decoded video frame, a video encoding device, a video decoding device, a computer readable medium with a computer program for a video encoding device and a device with A computer-readable medium for a computer program of a video decoding device. More specifically, the present invention relates to video encoding and video decoding with intra prediction. Background technique [0002] A video encoding device encodes an input video frame into a coded video frame for storage or transmission during the encoding process, and in a video decoding device, the coded video frame is used to reconstruct the stored or transmitted signal to obtain the original video signal refactor. The encoding process achieves a compression of the original video signal such that the compressed video signal can be stored on a storage me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/50H04N7/26
CPCH04N19/00781H04N19/00212H04N19/00278H04N19/00042H04N19/00157H04N19/00169H04N19/11H04N19/14H04N19/146H04N19/157H04N19/176H04N19/61
Inventor 克林顿·普瑞德肯尼思·安德森珀·福罗德亨乔纳坦·萨缪尔森
Owner TELEFON AB LM ERICSSON (PUBL)
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