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Serial input-parallel output video image brightness interpolating method and device

A technology of serial input and brightness interpolation, applied in image communication, TV, color TV, etc., can solve the problems of time-consuming, hardware processing time extension, etc., and achieve the effect of reducing complexity, saving bandwidth and computing cycle

Inactive Publication Date: 2008-03-12
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

Moreover, generating a 1 / 4 fractional pixel value every nine cycles is too time-consuming, prolonging the processing time of the hardware

Method used

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  • Serial input-parallel output video image brightness interpolating method and device
  • Serial input-parallel output video image brightness interpolating method and device
  • Serial input-parallel output video image brightness interpolating method and device

Examples

Experimental program
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Embodiment Construction

[0058] As shown in Figure 3, a H.264 / AVC-based serial input parallel output luminance interpolation device includes:

[0059] (1) The serial Wiener filter can generate 4 horizontal half-pixel intermediate values ​​in 9 cycles. as shown in picture 2;

[0060] (2) The 6×8 register array is composed of an integer pixel point storage array and a horizontal half pixel point intermediate value storage array, and is used to store 4 columns of integer pixels and 4 horizontal half pixel point intermediate values. The 6-tap FIR filter is used to find the vertical half-pixel point;

[0061] (3) Pipeline controller, used to control the filling process of the integer pixel point and the horizontal half pixel point intermediate value in the register array, and update the register array;

[0062] (4) 4 bilinear filters. As shown in Figure 4. Each bilinear filter selects pixel data according to the motion vector value of the current image relative to the reference image, and generates a 1...

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Abstract

The present invention discloses an image brightness interpolation method of H.264 / AVC based on serially input and paralleling output video and the device. A full pixel point in each line serially inputs a Wiener filter to produce a medium value of a level half pixel point, at the same time, the full pixel point is selected by utilizing the motion vector, thereby, the register array is reduced to 6 is multiplied by 8, and the filtering algorithm of the 1 / 4 pixel is optimized. Compared with the original paralleling input and paralleling output interpolation device, a 6 tap FIR filter in at least 3 horizontal directions are saved. Compared with the original paralleling input and serially output interpolation device, the register array is reduced from 6 is multiplied by 9 to 6 is multiplied by 8, and the complexity of the production chain controller is decreased. Compared with the original serially input and serially output interpolation device, and the bandwidth and the computation period are saved.

Description

technical field [0001] The invention relates to a video image brightness interpolation method and device, in particular to a video image brightness interpolation method and device with serial input and parallel output. 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 th...

Claims

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Application Information

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IPC IPC(8): H04N5/14
Inventor 戴郁郑伟李东晓骆凯张明
Owner ZHEJIANG UNIV
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