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Video encoding method and device, video decoding method and device

A technology for moving images and coding methods, which is applied in image communication, digital video signal modification, electrical components, etc.

Active Publication Date: 2020-04-28
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the amount of code related to motion information and reference frame numbers may increase
Also, there is a motion information prediction method (Patent Document 1 and Non-Patent Document 2) that refers to motion information stored in a motion information memory of a reference frame to derive predicted motion information of a block to be encoded (Patent Document 1 and Non-Patent Document 2), and there is a motion information memory that stores motion information. The case of increased capacity

Method used

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  • Video encoding method and device, video decoding method and device
  • Video encoding method and device, video decoding method and device
  • Video encoding method and device, video decoding method and device

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no. 1 Embodiment approach

[0076] The first embodiment relates to an image encoding device. A moving picture decoding device corresponding to the picture coding device according to this embodiment will be described in the second embodiment. This image encoding device can be realized by hardware such as LSI (Large-Scale Integration: Large Scale Integration) chip, DSP (Digital Signal Processor: Digital Signal Processor), FPGA (Field Programmable Gate Array: Field Programmable Gate Array). In addition, the image encoding device can also be realized by causing a computer to execute an image encoding program.

[0077] Such as figure 1 As shown, the image encoding device 100 according to this embodiment includes a subtraction unit 101, an orthogonal transformation unit 102, a quantization unit 103, an inverse quantization unit 104, an inverse orthogonal transformation unit 105, an addition unit 106, a reference image memory 107, a frame An inter prediction unit 108 , a motion information compression unit 10...

no. 2 Embodiment approach

[0164] The second embodiment relates to a video decoding device. The video encoding device corresponding to the video decoding device according to this embodiment is as described in the first embodiment. That is, the video decoding device according to the present embodiment decodes coded data generated by, for example, the video coding device according to the first embodiment.

[0165] Such as Figure 25 As shown, the video decoding device according to this embodiment includes an entropy decoding unit 2501, an inverse quantization unit 2502, an inverse orthogonal transformation unit 2503, an addition unit 2504, a reference image memory 2505, an inter prediction unit 2506, and a reference motion information memory 2507. , Refer to the motion information compression unit 2508 and the decoding control unit 2510 .

[0166] Figure 25 The video decoding device decodes the encoded data 2550, stores the decoded image signal 2554 in the output buffer 2511, and outputs it as an outp...

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Abstract

The invention relates to a moving image coding method and a moving image decoding method. The method divides an input image signal to pixel blocks, and performs inter-frame prediction on the divided pixel blocks. According to the method, predicted moving information is selected from a moving information buffer of moving information in an area keeping the coding ended, and the predicted moving information is used for predicting the moving information of a coding object block. Therefore, according to the method, the representative moving information is acquired from the multiple pieces of moving information in the area where the coding is ended according to first information that indicates the predicted moving information selection method, and thus only the representative moving information is acquired.

Description

[0001] This application is a divisional application of an invention patent application with the application number 201180066693.9, the filing date is March 9, 2011, and the title is "moving image coding method and moving image decoding method". technical field [0002] Embodiments of the present invention relate to a motion information compression method in encoding and decoding of a video, a video encoding method, and a video decoding method. Background technique [0003] In recent years, an image coding method that greatly improves coding efficiency has been proposed as ITU-TRec.H.264 and ISO / IEC14496-10 (hereinafter referred to as H.264 ). In H.264, prediction processing, transformation processing, and entropy coding processing are performed in units of rectangular blocks (for example, in units of 16×16 pixel blocks, in units of 8×8 pixel blocks, etc.). In the prediction process, a rectangular block to be coded (block to be coded) is referred to a coded frame (reference ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/426H04N19/52
CPCH04N19/428H04N19/52
Inventor 盐寺太一郎谷沢昭行山影朋夫中條健
Owner KK TOSHIBA