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AVS motion compensation luminance interpolation method and device thereof

A technology of brightness interpolation and motion compensation, which is applied in the field of digital video codec, can solve the problem of not maximizing resource sharing and utilization, and achieve the effect of satisfying real-time high-definition video decoding and reducing resource consumption and complexity

Inactive Publication Date: 2011-07-20
杭州高特信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since different algorithms are used for 1 / 2 and 1 / 4 pixels in the AVS standard, two different tap filters are required, and resource sharing and utilization are not maximized

Method used

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  • AVS motion compensation luminance interpolation method and device thereof
  • AVS motion compensation luminance interpolation method and device thereof
  • AVS motion compensation luminance interpolation method and device thereof

Examples

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Embodiment Construction

[0018] refer to figure 2 , the avs motion compensation luminance interpolator of the present invention comprises a controller unit (1), an input selector unit (2) with an external ram interface, a 1 / 2 filter unit (3), an intermediate temporary storage RAM unit (4 ), output selector unit (6) and limiter unit (5), the described input selector with external ram interface, 1 / 2 filter, output selector and limiter are connected successively, so The input terminal of the intermediate temporary storage RAM described above is connected to the output terminal of the 1 / 2 filter, and its output terminal is connected to the input terminal of the input selector; the input terminal of the controller is connected to the mv signal and the front-end module, and the output terminals are respectively connected to Input strobe and output strobe.

[0019] The main operation steps are as follows:

[0020] (a) mode judgment

[0021] (b) Input strobe

[0022] (c) Interpolation filtering

[0023]...

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Abstract

The invention relates to the field of digital video decoding, in particular to an AVS motion compensation luminance interpolation method and a device thereof. The invention integrates originally separated 1 / 2 and 1 / 4 interpolation filters into a single filter, and reduces resources the consumption and the complexity. Based on a pipeline structure, the invention can simultaneously process the eachstep of the data, and improves processing efficiency. Simultaneously, the invention can adjust parallelism degree as needed, is applicable to the different requirements of distinguish ability and system frequency, can reach a best balance point on hardware resources employ and processing speed, and meets the requirement of real-time high definition video decoding.

Description

technical field [0001] The invention relates to the field of digital video coding and decoding, in particular to a brightness interpolation method and device based on AVS motion compensation. technical background [0002] Motion compensation is the main method to remove time redundancy in AVS and other video codec standards. It uses a variety of macroblock division methods, 1 / 4 pixel interpolation, bidirectional estimation and multiple reference frames and other technologies to greatly improve the coding efficiency, but at the same time It also adds some complexity to the codec. Among them, the interpolation unit, especially the 1 / 4 interpolation, accounts for a large proportion of calculation and resources. Therefore, a high-efficiency interpolation unit has a decisive impact on the entire codec system. [0003] The 1 / 4 interpolation of the brightness component in the AVS standard is divided into two steps: 1 / 2 pixel difference and 1 / 4 pixel interpolation. The traditional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/50H04N19/51H04N19/523H04N19/583H04N19/59H04N19/80
Inventor 陈日仪刘亮
Owner 杭州高特信息技术有限公司
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