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Video coding method and video decoding method

一种编码方法、解码方法的技术，应用在数字视频信号修改、电视、电气元件等方向，能够解决不能预测效率以及编码效率最佳化等问题

Inactive Publication Date: 2010-09-01
PANASONIC CORP
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  • Claims
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Problems solved by technology

Therefore, in the above-mentioned conventional techniques, the prediction efficiency and the coding efficiency cannot be optimized.

Method used

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  • Video coding method and video decoding method
  • Video coding method and video decoding method
  • Video coding method and video decoding method

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Embodiment Construction

[0127] Hereinafter, the video encoding device and the video decoding device of this embodiment will be described in detail using the drawings.

[0128] image 3 It is a block diagram showing the structure of the video coding apparatus 100 applying adaptive filter motion compensation according to the present embodiment. The video encoding device 100 in this figure is a device that uses an adaptive interpolation filter to perform motion compensation with fractional pixel accuracy to encode video data. The adaptive interpolation filter is used to calculate the pixel value of the fractional pixel. The pixel values ​​of the fractional pixels are used for interpolation between the integer pixels constituting the input image included in the video data (input video sequence). image 3 The block diagram with figure 1 Corresponding. for with figure 1 The same components of the illustrated video encoding device 300 are denoted by the same reference numerals.

[0129] image 3 The i...

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Abstract

To provide a video coding method with which prediction efficiency and coding efficiency can be optimized and a video coding device. A video coding device (100) codes video data by performing a motion compensation with decimal pixel accuracy by using an adaptive interpolation filter for calculating a pixel value of a decimal pixel that performs interpolation between integer pixels configuring an input image included in the video data. The video coding device (100) comprises a motion compensation prediction unit (160) which sets a filter characteristic of the adaptive interpolation filter for each predetermined process unit, decides a plurality of filter coefficients of the adaptive interpolation filter having the set filter characteristic for each location of the decimal pixels that are relative to the integer pixel, and performs the motion compensation with the decimal pixel accuracy by applying the adaptive interpolation filter having the plurality of decided filter coefficients to the input image, a subtractor (110) which generates a prediction error by performing a subtraction between the prediction image generated by the motion compensation and the input image and an entropy coding unit (190) which codes the prediction error.

Description

technical field [0001] The present invention relates to an image encoding method and an image decoding method, and more particularly relates to a motion compensation prediction using an adaptive interpolation filter and based on fractional pixel precision. The present invention relates to an image encoding method and an image decoding method. Background technique [0002] In the hybrid coding technique, motion compensated prediction with transform coding accompanied by prediction errors is applied. In particular, in motion vectors with fractional pixel precision, prediction efficiency is limited due to influences of aliasing, quantization errors, errors due to motion detection errors, camera noise, and the like. The concept of adaptive interpolation filtering is to provide a solution to the content. [0003] It has been found through experiments that it is useful to apply a discrete or non-separative adaptive interpolation filter according to signal characteristics. In add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N1/41
CPCH04N19/00303H04N19/00278H04N19/00587H04N7/26265H04N19/00272H04N19/00066H04N19/0063H04N7/26058H04N7/26122H04N7/26154H04N19/00139H04N7/26946H04N7/26382H04N19/00551H04N19/00369H04N7/26313H04N7/364H04N7/26244H04N19/00896H04N19/00739H04N19/00545H04N7/26074H04N19/00884H04N7/26808H04N19/00175H04N7/26255H04N19/176H04N19/70H04N19/147H04N19/46H04N19/51H04N19/196H04N19/117H04N19/463H04N19/136H04N19/182H04N19/174H04N19/82H04N19/523
Inventor S·维特曼T·韦迪
Owner PANASONIC CORP
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