Video detecting and processing method and video detecting and processing device

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

Active Publication Date: 2015-04-29
HAIER BEIJING IC DESIGN
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  • Abstract
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  • 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 mis

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  • Video detecting and processing method and video detecting and processing device
  • Video detecting and processing method and video detecting and processing device
  • Video detecting and processing method and video detecting and processing 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 detecting and processing method. The video detecting and processing method comprises the following steps: calculating the whole dependency of images of adjacent fields to predicate whether a current field is a film field or not; if so, combining the current field and the adjacent field to form a frame; detecting comb tooth artifacts in the synthesized frame pixel by pixel; if no comb tooth artifact is detected, determining that a current local region is a film pattern and taking the synthesized frame as a restored video frame; if the comb tooth artifacts are detected, judging that the current local region is a non-film pattern; and calculating an interpolation frame by adopting a movement self-adaptive method or a spatial interpolation method and taking the interpolation frame as a restored video frame. The video detecting and processing method can be used for correctly detecting a film region and an interlacing region in a mixed video and different interlacing removing technologies are used for processing respectively, so that the details of the film region are recovered and a comb tooth phenomenon is avoided. Meanwhile, a film pattern detection module and an interlacing removing module can use the same input so that field caching and DDR bandwidth are reduced, and the hardware cost is saved.

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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IPC IPC(8): H04N7/01H04N5/14H04N9/78
Inventor 王永刚
Owner HAIER BEIJING IC DESIGN
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