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Image-video-signal converting apparatus and method thereof

A technology of video signal and conversion device, which is applied in the field of image communication, can solve problems such as multi-calculation complexity, and achieve the effects of reducing cost, improving signal compression rate, and reducing computing and storage complexity

Active Publication Date: 2005-07-20
ZHEJIANG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So, when considering video encoding and decoding methods, consider keeping the decoder simple, even if the encoder requires more computational complexity

Method used

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  • Image-video-signal converting apparatus and method thereof
  • Image-video-signal converting apparatus and method thereof
  • Image-video-signal converting apparatus and method thereof

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Embodiment Construction

[0048] refer to figure 1 , the forward converter converter that is transformation device described in the present invention comprises input device 1, forward conversion device 2, scaling device 3 and output device 4 that are connected successively, forward conversion device 2 and forward conversion coefficient storage device 5 connected; the scaling device 3 is arranged between the forward transformation device 2 and the output device 4 .

[0049] The input device 1 is made up of existing volatile memory (such as register, cache, RAM), non-volatile memory (such as ROM, EEPROM, flash memory) or some combination of the two, and it is used to accept storage forward transformation The input data can be video signal, image signal, video or image prediction residual signal, etc. It can accept and maintain the input data, and can provide input data when forward transformation processing is required.

[0050] The forward transformation device 2 can perform forward transformation proc...

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Abstract

The invention relates to an image and video signal converting device and method, including forward converter and converting method, or reverse converter and converting method, where the forward converter includes input device, forward converting device, zoom device and output device, all interconnected in turn, and the forward converting device is connected with forward conversion coefficient storage device, and the characteristic of the forward converter lies in that: the zoom device is arranged between the forward converting device and the output device; the reverse converter is composed of input device, reverse converting device, output device and reverse conversion coefficient storage device, and the characteristic of the reverse converter lies in that: the reverse converting device is connected between the output device and the input device, the reverse conversion coefficient storage device is connected with the reverse converting device; it has the characters of simple structure and stable performance, and it is an image and video signal converting device and method that can convert video, image and forecast residual error signal of video or image.

Description

technical field [0001] The invention belongs to the technical field of image communication, and in particular relates to an image and video signal conversion device and method thereof. Background technique [0002] In the era of rapid development of image communication technology, data compression technology is one of the keys to high-quality data storage and data transmission. People have studied and applied video compression technology for more than 20 years, and H.261 has been produced in the field of communication. . Wider and wider. In video coding, the information of the coded block in the same frame image is usually used to perform intra-frame prediction on the current coded block or the information of the previously coded image is used to perform inter-frame prediction on the current coded block. Therefore, the encoding end only needs to transmit the encoding mode information, the transform and quantization coefficient of the residual of the reconstructed image blo...

Claims

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Application Information

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IPC IPC(8): H04N19/126H04N19/60
Inventor 虞露湛伟权楼剑
Owner ZHEJIANG UNIV
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