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Method for solving interlace by using error correction and motion compensation as well as its equipment

A technology of motion compensation and error correction, which is applied in the field of digital TV scanning format conversion, can solve the problems of high cost ratio, insufficient low-pass filtering effect, cumbersome calculation of filter coefficients, etc., and achieve the effect of small calculation amount and improved effect

Inactive Publication Date: 2003-10-08
HANGZHOU NATCHIP SCI & TECH
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Problems solved by technology

This method requires additional motion vector detection equipment, and the calculation of filter coefficients is also relatively cumbersome, and the cost of implementation is relatively high.
Moreover, in the area where the motion vector is inaccurate, the effect of low-pass filtering is not good enough, and there is still a certain gap between the pixels recovered by low-pass filtering and the real value.

Method used

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  • Method for solving interlace by using error correction and motion compensation as well as its equipment
  • Method for solving interlace by using error correction and motion compensation as well as its equipment
  • Method for solving interlace by using error correction and motion compensation as well as its equipment

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Embodiment Construction

[0017] figure 1 Instructions to understand the principle of interleaving. As shown, an interlaced image sequence generates a progressive image sequence by interpolating each image field. The solid lines in the interlaced image in the figure represent the pixels of the original row, and the dotted lines represent the pixels of the row to be interpolated. These interpolated line pixels can be generated in many ways, among which motion compensation techniques are more advanced.

[0018] figure 2 Middle ○ indicates the pixel to be interpolated; ● indicates the original pixel of the current input field; △ indicates the pixel to be interpolated currently to be processed; ■ indicates the pixel for motion compensation. ★Indicates the pixel after correcting motion compensation. "1" indicates a spatial neighborhood of the pixel to be interpolated; "2" is a spatial neighborhood of the motion-compensated pixel matched by the motion vector of "1".

[0019] a is the actual value of th...

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Abstract

A method includes following steps. The difference between the original pixel measured in spatial neighborhood of the pixel to be interpolated and the corresponding motion compensation pixel. The saiddifference value is utilized to estimate the compensation error. The estimated error is used to correct the motion compensation. The devices for executing the method includes the error detector utilized to detect and measure the differences between several original pixels and the corresponding motion compensation pixels, and the correcting compensator utilized to estimate the said differences andcorrect the motion compensation. The invention possesses the advantages of less operation quantity and good compensation effect.

Description

technical field [0001] The invention belongs to the technical field of digital TV scanning format conversion, and particularly relates to a method for correcting motion compensation deinterleaving by using errors and a device for realizing the method. Background technique [0002] For a long time, interlaced scanning technology has been widely used in video signals to reduce bandwidth. The main disadvantage of this scanning technology on current high-resolution large-screen displays is that it is easy to produce line flicker and jagged active edges, which cannot meet the needs of the audience. Increased demand for clarity. Compared with interlaced TV, the progressive scan TV signal has significantly improved in terms of image vertical definition, large-area flicker, and interline flicker. The advantages of progressive scanning over interlaced scanning have led to the emergence of scan format conversion techniques in practice. A basic technology for ...

Claims

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Application Information

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IPC IPC(8): H04N7/01
Inventor 王维东陈涛张明谢磊
Owner HANGZHOU NATCHIP SCI & TECH
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