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Encoding apparatus, encoding method

A coding device, coding technology, applied in the direction of television, standard conversion, electrical components, etc.

Inactive Publication Date: 2010-10-13
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of decoding only the bit stream of the lower layer, an image with relatively low image quality is decoded

Method used

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  • Encoding apparatus, encoding method
  • Encoding apparatus, encoding method
  • Encoding apparatus, encoding method

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Experimental program
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Embodiment Construction

[0048] In the encoding / decoding system 1, in the encoding device 2 on the transmission side, image data is generated by orthogonal transform such as discrete cosine transform (DCT), KL (Karhunen-Loeve: Karhunen-Loeve) transform and motion compensation. Compressed (encoded) frame-coded image data (bit stream) is modulated and then transmitted through a transmission medium 5 such as a satellite broadcast wave, a cable TV network, a telephone line network, or a mobile phone line network. .

[0049] On the receiving side, after demodulating the coded image signal received by the decoding device 3 , frame image data expanded by the inverse transform of the orthogonal transform and motion compensation during the modulation described above are generated and used.

[0050] The transmission medium 5 is not limited to the above-mentioned communication network, and may be a recording medium such as an optical disk, a magnetic disk, or a semiconductor memory.

[0051] In this embodiment,...

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Abstract

An encoding apparatus, which encodes a progressive image data and an interlaced image data corresponding to the progressive image data, comprises a first encoding part that is adapted to generate both a first encoded data obtained by encoding a picture data constituting the interlaced image data and a reconstructed image data obtained by decoding and reconstructing the first encoded data; an up-sampling part that is adapted to up-sample the generated reconstructed image data to generate an image data having the same resolution as the progressive image data; and a second encoding part that is adapted to encode the picture data constituting the progressive image data with the generated image data used as a predicted image data, thereby generating a second encoded data.

Description

technical field [0001] The present invention relates to an encoding device, encoding method, and program for encoding image data, and a decoding device, decoding method, and program for decoding image data. Background technique [0002] In recent years, it has been processed digitally as image data. At this time, for the purpose of efficient information transmission and storage, the unique redundancy of image information is utilized, followed by orthogonal transformation such as discrete cosine transform (DCT: Discrete Cosine Transform) and motion compensation. Encoding devices and decoding devices following encoding methods such as H.264 / AVC (Advanced Video Coding: Advanced Video Coding) with a higher compression rate after MPEG (Moving Picture Experts Group: Moving Picture Experts Group) for compression are in broadcasting stations, etc. Both information distribution and information reception in ordinary households are spreading. [0003] Currently, standardization of so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01H04N7/32H04N19/50H04N19/11H04N19/33H04N19/503H04N19/51H04N19/59H04N19/61H04N19/625H04N19/70H04N19/85
CPCH04N19/00781H04N19/00024H04N19/00569H04N7/26351H04N19/00321H04N19/00048H04N7/26042H04N19/00272H04N19/00224H04N7/465H04N19/00757H04N19/00424H04N19/00436H04N19/105H04N19/50H04N19/61H04N19/112H04N19/16H04N19/174H04N19/187H04N19/33H04N19/59H04N7/01
Inventor 汪黎明铃木辉彦矢崎阳一
Owner SONY CORP