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AVS fast intra-frame predicting method and device thereof

A technology of intra-frame prediction and intra-frame prediction mode, which is applied in TV, electrical components, digital video signal modification, etc., can solve the problem of unsuitable storage interpolation mode, and achieves the effect of regular structure, resource saving, and improved operation speed.

Inactive Publication Date: 2010-02-10
杭州高特信息技术有限公司
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Problems solved by technology

[0065] There are many modes of intra-frame prediction, and the sample point data required for each mode is also different, and a large number of sample points need to be stored. Considering that the decoding of the CIF format is realized under the 27M clock, a single storage interpolation mode no longer suitable

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  • AVS fast intra-frame predicting method and device thereof
  • AVS fast intra-frame predicting method and device thereof
  • AVS fast intra-frame predicting method and device thereof

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Embodiment Construction

[0080] The structure of the arithmetic structure of the present invention will be described below.

[0081] figure 1 It is a block diagram used to illustrate the structure of the intra-frame prediction interpolation module. In the figure, the entire system block diagram consists of the following parts: K-order Columbus index decoding module, which decodes the code stream to obtain IDCT / IQ and intra-frame prediction interpolation required mode and other data; intra-frame prediction mode judgment module, which is based on The decoded pred_mode_flag, intra_pred_mode, and Imgx imgy slice are operated to obtain the intra prediction mode of the current sub-block, and 5 clocks output the intra-prediction mode; the intra-prediction calculation module is based on the intra-prediction mode of the current sub-block and the stored phase Interpolate the sample points in one row and one column of neighboring blocks; IDCT / IQ module, which calculates the residual data; residual superposition rec...

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Abstract

The invention relates to an AVS fast intra-frame predicting method and a device thereof. The method is characterized by comprising the following steps: a decoding module recodes the current sub-blockframe code stream; an intra-frame predicting mode judging module obtains a current sub-block intra-frame code predicting mode according to decoded data operation; an intra-frame predicting computing module interpolates according to an intra-frame predicting mode and memorized adjoining one-row and one-line sample points; an IDCT / IQ module computes residual data; and a residual overlapping reconstructed module overlaps an interpolation matrix obtained by the interpolation and a residual matrix obtained by the IDCT / IQ module to obtain the final current frame image data and control the one-row and one-line sample points need for returning to the next interpolation. By adopting the design idea such as module multiplexing, the maximum parallel processing among the modules, and the like, the invention greatly improves computing speed and is very applicable to being realized by FPGA.

Description

Technical field [0001] The present invention relates to an FPGA-based method and hardware implementation structure of intra-frame prediction interpolation used in information compression technology such as image signal processing. technical background [0002] With the development of microelectronics technology, the development of electronic information products has two obvious characteristics: First, the complexity of the products has increased, and the second is the tight time limit for the market. In response to this situation, Field Programmable Logic Devices (FPLD) appeared, among which the most widely used are Field Programmable Gate Array (FPGA) and Complex Programmable Logic Device (CPLD). [0003] Similarly, the design of various large-scale circuits used for image signal processing is no longer fashionable to adopt fully custom circuit design methods or semi-custom circuit design methods, and the system-level design method using field programmable logic devices has become...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/50H04N19/61
Inventor 刘亮陈日仪
Owner 杭州高特信息技术有限公司
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