Method for frame frequency doubling based on image profile matching

An image contour and frame rate technology, applied in image communication, components of color TV, components of TV systems, etc., can solve the problems of reduced video quality, unable to obtain clear interpolated images, etc., to achieve the removal of motion blur, The effect of good visual effects

Inactive Publication Date: 2009-04-01
上海携昌电子科技有限公司
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Problems solved by technology

[0015] In the patent document whose patent number is 200410032889.8 (frame interpolation method and device thereof during frame rate conversion), it is recorded "a frame interpolation method for processing repetitive or periodically repeated video during frame rate convers

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  • Method for frame frequency doubling based on image profile matching
  • Method for frame frequency doubling based on image profile matching
  • Method for frame frequency doubling based on image profile matching

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[0036] The present invention will be further described below in conjunction with the drawings.

[0037] Such as Figure 1~3 As shown, a method for doubling the frame rate based on image contour matching includes the following steps:

[0038] (1) Compare the current frame with the reference frame to determine the moving area and still area in the current frame;

[0039] (2) Perform edge detection on the moving area to determine the current contour of the image;

[0040] (3) According to the determined current contour, generate the current block containing the contour, match the search area in the reference frame, and match the search area with the current block according to the block matching criterion;

[0041] (4) Detect whether a block similar to the current block is matched, if not, execute step (5), if yes, execute step (6);

[0042] (5) Interpolate using frame repetition or black frame insertion;

[0043] (6) Calculate the image data in the interpolated frame of the current bl...

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Abstract

The invention relates to a method for frame frequency doubling method based on image contour matching. The inventive method compares present frame with reference frame, and determines movement area and static area of present frame; edge detection of the movement area is performed to determine present contour of image in movement area; generating present block containing the contour according to determined present contour, matching search area of reference frame, and searching block similar to present block in search area by matching rule; executing interpolation by adopting frame repetition or black frame insertion; calculating image data of present block in interpolation frame; generating frame frequency doubling time sequence and outputting interpolation frame image data of present frame and then image data of present frame in a frame time according to time sequence. The invention processes 50 frame/second and 60frame/ second non-interlaced signal based on image contour matching, provides better visual effect at 100Hz/120 Hz liquid crystal screen, achieves goal for removing movement blurring.

Description

technical field [0001] The invention relates to a frame frequency doubling technology, in particular to a frame frequency doubling method based on image contour matching. Background technique [0002] The current TV signals are divided into 50Hz (50 fields per second) and 60Hz (60 fields per second), and an interlaced scanning method is adopted (each frame signal is composed of odd field and even field). [0003] LCD technology, as one of the representative technologies of flat-panel TVs, adopts progressive scanning technology. Therefore, the interlaced TV signal needs to go through de-interlace (De-interlace) technology to convert the 50 field / 60 field signal into 50 frame / 60 frame per second. [0004] LCD technology, compared to other flat-panel TVs, also has disadvantages. Its main disadvantage is that it will produce motion blur when displaying high-speed moving pictures. The reason for this phenomenon is that the response time of the liquid crystal is relatively low ...

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Application Information

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IPC IPC(8): H04N7/01H04N5/14
Inventor 赵云杰朱凌燕
Owner 上海携昌电子科技有限公司
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