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A video detection and processing method and device

A technology of video detection and processing methods, applied in luminance and chrominance signal processing circuits, televisions, color televisions, etc.

Active Publication Date: 2017-12-22
HAIER BEIJING IC DESIGN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing technology only gives the detection results of the whole field, which makes the de-interlacing module mistakenly treat the interlaced areas in these mixed videos as film mode, so that combing artifacts (such as Figure 11 )

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  • A video detection and processing method and device
  • A video detection and processing method and device
  • A video detection and processing method and device

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Embodiment Construction

[0034] The embodiments of the present invention will be further described below based on the accompanying drawings. These descriptions are for readers to understand the present invention more easily, and should not be regarded as limitations on the present invention.

[0035] The present invention proposes a local film mode detection method based on comb-tooth detection, corrects the prediction result of the film mode, can correctly detect the film area and interlaced area in the mixed video, and uses different de-interlacing techniques to process them separately, In this way, the details of the film area are restored, and the phenomenon of interlaced comb teeth is avoided. At the same time, since the film mode detection only needs to give the prediction result, the film mode detection module and the deinterlacing module can use the same input, which reduces the field buffer and DDR bandwidth, and saves hardware implementation costs.

[0036] Because the interlaced video is tr...

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Abstract

The invention relates to a video detection and processing method. It predicts whether the current field is a movie field by calculating the overall correlation of adjacent field images. Detect combing artifacts pixel by pixel, if there is no combing artifact, then confirm that the current local area is in film mode, and use the synthesized frame as the restored video frame; if there is combing artifact, determine that the current local area is non-movie Mode, at this time, the motion adaptive method or the spatial interpolation method is used to calculate the interpolated frame as the restored video frame. The invention can correctly detect the film area and the interlaced area in the mixed video, and use different de-interlacing techniques to process them respectively, so as to restore the details of the film area and avoid combing phenomenon. At the same time, the film mode detection module and the deinterlacing module can use the same input, which reduces the field buffer and DDR bandwidth, which is beneficial to save hardware costs.

Description

technical field [0001] The invention relates to the field of video mode detection, in particular to a video detection and processing method and device. Background technique [0002] Movies are usually shot at 24 frames per second on a progressive basis. In order to play movie programs smoothly on TV, it is necessary to split movie frames into TV field signals for broadcast transmission. This technology is called pull-down conversion process, and the common ones include 3:2 pull-down conversion and 2:2 pull-down conversion technology in PAL broadcasting. Take the 3:2 pull-down conversion as an example, if the movie frame sequence is represented by A, B, C, D..., such as figure 1 As shown, first split each frame into two fields, such as A t and A b , where the subscripts t and b represent the top field and the bottom field respectively, and the TV field signal obtained after 3:2 pull-down conversion processing is A t 、A b 、A t , B b , B t 、C t 、C b 、C t 、D t 、D b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01H04N5/14H04N9/78
Inventor 王永刚
Owner HAIER BEIJING IC DESIGN
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