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De-block effect filtering device and method

A technology of deblocking and filtering devices, which is applied in TV, electrical components, digital video signal modification, etc., can solve the problems of high cost, achieve loose timing, save storage space, and improve efficiency

Inactive Publication Date: 2009-04-15
昆山杰得微电子有限公司
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AI Technical Summary

Problems solved by technology

Numerous filtering calculations for a row of data in 2 clock cycles are costly in terms of area

Method used

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  • De-block effect filtering device and method
  • De-block effect filtering device and method
  • De-block effect filtering device and method

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Embodiment Construction

[0030] Such as Figure 10 Shown is a schematic diagram of the structure of the deblocking filter device of the present invention. The present invention is different from the general deblocking filter in that two independent boundary filtering modules and a vertical filtering module are used to filter the vertical edges of macroblocks. Filtering processing; a horizontal filtering module, whose input end is connected to the output end of the vertical edge filtering module, and whose output end is connected to the input end of the vertical edge filtering module, for filtering the horizontal edge of the macroblock; the present invention It also includes an external storage module, which is respectively connected with the vertical filtering module and the horizontal filtering module, and is used for storing the result data and row buffer data of the vertical filtering and horizontal filtering.

[0031] The vertical filtering module of the present invention includes: a vertical edge...

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Abstract

The invention discloses a deblock effect filter device which comprises a vertical side filter module used for carrying out filter treatment on the vertical side of a macro block; a horizontal side filter module the input end of which is connected with the output end of the vertical side filter module and the output end thereof is connected with the input end of the vertical side filter module used for carrying out filter on the horizontal side of the macro block; an external memory module which is respectively connected with the vertical filter module and the horizontal filter module and is used for memorizing the result data and the line buffer data of the vertical filter and the horizontal filter. The invention discloses a deblock filter effect filter method by utilizing the device which comprises carrying out vertical filter and horizontal filter. As the independent vertical filter module and the horizontal filter module are adopted in the invention, the memory space of a chip macro block grade; moreover, the parallel mode of vertical filter and horizontal filter is adopted for carrying out filter, in this way, a time sequence is looser; and the self-adapting mode of the frame field of the macro block grade is supported, thus extensively improving the filter efficiency.

Description

technical field [0001] The invention relates to a deblocking filter device in the field of image processing. The invention also relates to a deblocking effect filtering method based on the device. Background technique [0002] Modern image coding and decoding technologies widely use discrete cosine transform, block motion prediction and compensation, and other technologies that use macroblocks as processing units, resulting in the appearance of block effects, and the propagation of errors affects subsequent image coding and decoding, and also damages the image quality. Subjective appreciation effect. The introduction of the deblocking filter can reduce the blocking effect, reduce the propagation of errors, and improve the subjective viewing effect of the image. [0003] With the rise of standards such as H.264, VC-1 and AVS and people's pursuit of high-definition decoding, the deblocking filter technology that can process large-scale images in real time has become an impor...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/117H04N19/86
Inventor 叶建宇黄小振欧阳合
Owner 昆山杰得微电子有限公司
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