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Image decoding method

A decoding and image technology, applied in the field of image decoding, can solve the problems of low processing power computing units

Inactive Publication Date: 2007-06-06
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, in portable devices such as mobile phones and PDAs (Personal Digital Assistants), in order to use batteries as the power source for long-term use and to suppress power consumption, only arithmetic units with low processing capabilities can be used, and sometimes only Use a pixel interpolation method that handles small

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Embodiment Construction

[0036] Next, specific embodiments of the present invention will be described with reference to the drawings.

[0037] (implementation form 1)

[0038] FIG. 4 is a block diagram showing the configuration of an image encoding device 400 of the present invention. In the conventional image encoding device 100 shown in FIG. 2, the same reference numerals are assigned to the components and the components and signals that perform the same operations, and their descriptions are omitted.

[0039] The image coding device 400 is an image coding device that selectively performs pixel interpolation with different precisions according to the image type signal PicType input from the outside, and includes: a differentiator 101, an image coding unit 102, a variable-length coding unit 103, an image Decoding unit 104, adder 105, image memory 106, pixel block acquisition unit 107, switch 108, switch 109, switch 401, switch 402, pixel interpolation unit A403, pixel interpolation unit B404, motion...

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Abstract

The present ivention provides an picture decoding method, decoding the coded signal using the generated predictive picture based on reference picture. A pixel interpolation method is used while generating the said predictive picture. The pixel interpolation method is based on a plurality of integer location pixel located near by decimal location pixels, and calculates the pixel value of the said decimal location pixels of the said reference picture by pixel interpolation. The picture decoding method comprises: a selecting step for selecting a pixel interpolation method from N pixel interpolation methods in the filter processing of generating a pixel interpolation pixel from N pixels; a predictive picture generating step for generating the predictive picture using the selected pixel interpolation method based on the said reference picture; and a decoding step for decoding the said coded signal using the said predictive picture.

Description

[0001] This application is a divisional application of an invention application with a filing date of August 12, 2002, an application number of 02802938.0, and an invention title of "Image Coding Method and Image Decoding Method". technical field [0002] The present invention relates to an image decoding method for predicting the dynamics of an image. Background technique [0003] In recent years, along with the development of multimedia applications, all media information such as images, sounds, and texts are generally processed in a unified manner. In this case, by digitizing all the media, it is possible to collectively process the media. However, since digitized images have a huge amount of data, information compression technology for storing and transmitting images is essential. On the other hand, in order to mutually utilize compressed image data, standardization of compression techniques is very important. As the standard specification of image compression technolo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/36H04N7/50H04N19/117H04N19/159H04N19/172H04N19/174H04N19/176H04N19/61H04N19/82
Inventor 羽饲诚角野真也近藤敏志安倍清史
Owner PANASONIC CORP