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Video signal coding device and method and video signal decoding device and method

A video coding and video technology, applied in the field of coding/decoding technology in the video system, can solve the problems of affecting the overall efficiency of the system, prolonging the coding operation time, reducing the data volume of coding results, etc.

Active Publication Date: 2016-04-20
MEDIATEK INC
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Problems solved by technology

That is to say, in a typical AVS encoding system, although the secondary conversion can contribute to the benefit of reducing the data volume of the encoding result, it will cause the extension of the encoding operation time, thereby affecting the overall efficiency of the system

Method used

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  • Video signal coding device and method and video signal decoding device and method
  • Video signal coding device and method and video signal decoding device and method
  • Video signal coding device and method and video signal decoding device and method

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Embodiment Construction

[0029] A specific embodiment according to the present invention is a video encoding device. In practice, the video coding device can be integrated in various video coding systems with secondary transform mechanism, or can exist independently. For ease of description, the following description mainly takes the case where the video coding device is set in the digital audio and video codec technology standard (AVS) coding system as an example, and its partial functional block diagram is shown in image 3 .

[0030] In this embodiment, the intra-frame prediction module 32 is responsible for performing an intra-frame prediction process on each image block in a video frame, so as to generate a luminance residual value block of each image block. The transform module 34 is responsible for applying a primary transform and a secondary transform to the luma residual block. For example, the preliminary transform may be a discrete cosine transform (DCT) or an integer transform transforme...

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Abstract

A video signal coding device provided by the invention comprises a transition module. According to a transition matrix, the transition module acts transition after combination on a target image data block along a specification direction. The transition matrix is the product of a preliminary transition matrix and a secondary transition matrix. The preliminary transition matrix corresponds to one-dimensional preliminary transition along the specific direction in two-dimensional preliminary transition. The secondary transition matrix corresponds to one-dimensional secondary transition along the specific direction in two-dimensional secondary transition.

Description

technical field [0001] The present invention is related to multimedia signal processing technology, and especially related to encoding / decoding technology in video system. Background technique [0002] With the advancement of communication technology, digital TV broadcasting is becoming more and more mature and popular. In addition to transmission via cable lines, digital TV signals can also be transmitted in the form of wireless signals through equipment such as base stations or artificial satellites. In order to take into account the needs of improving image quality and reducing the amount of transmitted data, the transmitting end usually encodes and compresses the video and audio signals to be transmitted. Correspondingly, the receiving end must correctly decode and decompress the received signal before it can restore the video and audio signal. [0003] figure 1 A partial functional block diagram of a coding system conforming to the digital audio and video coding stan...

Claims

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Application Information

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IPC IPC(8): H04N19/61H04N19/124
CPCH04N19/593H04N19/42H04N19/60
Inventor 林和源
Owner MEDIATEK INC
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