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Video image chroma interpolation method and device

A video image and chrominance technology, applied in brightness and chrominance signal processing circuits, color TV with bandwidth compression, color TV with pulse code modulation, etc., can solve the problem of consuming hardware area and so on

Active Publication Date: 2009-10-07
万维显示科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] From the formula (1) of chroma interpolation, it can be seen that each interpolation to obtain a chroma prediction value requires 8 multipliers and 3 adders, which will consume a lot of hardware area

Method used

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  • Video image chroma interpolation method and device
  • Video image chroma interpolation method and device

Examples

Experimental program
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Embodiment Construction

[0040] like figure 2 Shown, a kind of chroma interpolation device of video image comprises:

[0041] Two complement blocks for converting xFrac C and yFrac C Convert to 8-xFrac C and 8-yFrac C .

[0042] Two selectors for selecting output xFrac C and 8-xFrac C ,yFrac C and 8-yFrac C ;

[0043] two multipliers;

[0044] An adder that adds the output of the multiplier to the data in the register;

[0045] The controller is used to control the work of the chroma interpolation device. Clear the contents of the register when the clear signal rst_n is 0. The interpolation device starts to work when the enable signal en is 1. In the first cycle when the device starts to work, the input of the device is A, and the selection output of selector 1 is 8-xFrac C , the selection output of selector 2 is 8-yFrac C . In the second cycle when the device starts to work, the input of the device is B, and the selection output of selector 1 is xFrac C , the selection output of sel...

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Abstract

The invention discloses a chromaticity interpolation method and a device thereof which only need two multipliers and one adder. The present invention achieves the purpose of interpolating chrominance blocks by serially inputting integer pixels and multiplexing two multipliers and one adder. The invention has the advantages of saving 6 multipliers and 2 adders, reducing hardware area, and is very suitable for VLSI implementation.

Description

technical field [0001] The present invention relates to a video image chroma interpolation method and device, in particular to a chroma interpolation method and device that only requires two multipliers and one adder. Background technique [0002] Video information has the characteristics of intuition, accuracy, efficiency, and extensiveness. With the rapid development of Internet and mobile communication, digital video technology has been widely used. Compared with analog video, digital video has many advantages such as small distortion, low noise, high quality, easy processing, easy correction, large capacity and many programs. advantage. [0003] However, the amount of digital video information is too large, which makes the transmission network bandwidth requirements high. Therefore, the digital video signal is generally compressed and encoded before being transmitted on the network, so as to save transmission bandwidth and storage space. After being transmitted to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/77H04N11/02H04N11/04
Inventor 戴郁郑伟李东晓骆凯张明
Owner 万维显示科技(深圳)有限公司