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Motion detection method and device

A motion detection and image technology, applied in the field of video processing, can solve problems such as single threshold setting, affecting video de-interlacing effect, and inability to directly display, so as to achieve good de-interlacing effect and reduce hardware cache consumption

Active Publication Date: 2019-10-29
XIAN NOVASTAR TECH
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Problems solved by technology

However, this kind of interlaced video cannot be directly displayed on progressive display devices in the current digital TV industry, so it is necessary to convert the interlaced video to progressive video, which leads to the problem of video deinterlacing
[0003] At present, most terminal display devices adopt the motion-adaptive de-interlacing method. In motion detection, this method generally compares the absolute difference of pixels between fields with a fixed threshold. If it is greater than the threshold, it is judged as a motion state. It is in a static state, where the threshold is set to a single value and is sensitive to noise. There is a risk of misjudgment, which affects the effect of video deinterlacing.

Method used

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no. 1 example

[0021] like figure 1 As shown, a motion detection method proposed in this embodiment is applied to video deinterlacing processing, which includes the following steps:

[0022] S11: Acquire three consecutive images of three fields, wherein the three consecutive images include the current field image, the previous field image and the next field image;

[0023] S13: According to the luminance component of the image in the previous field and the luminance component of the image in the next field, the inter-field differences of the positions of the points to be interpolated in the image in the current field are obtained;

[0024] S15: Perform neighborhood summation on the inter-field differences of the positions of the points to be interpolated in the image in the current field to obtain the cumulative inter-field difference of the points to be interpolated in the image in the current field;

[0025] S17: Calculate the absolute value of the inter-field difference between the posit...

no. 2 example

[0077] like Image 6 As shown, a motion detection device 60 provided in this embodiment is applied to video deinterlacing processing, and includes: an image acquisition module 61, an inter-field difference calculation module 63, an accumulated inter-field difference calculation module 65, an inter-field absolute difference Value calculation module 67 and motion weight determination module 69.

[0078] Wherein, the image acquiring module 61 is used to acquire three consecutive fields of images, wherein the three consecutive fields of images include a current field image, a previous field image and a next field image.

[0079] The inter-field difference calculation module 63 is used to obtain the inter-field difference of the position of each point to be interpolated in the current field image according to the luminance component of the previous field image and the luminance component of the next field image.

[0080] The cumulative inter-field difference calculation module 65 ...

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Abstract

The embodiment of the invention provides a video de-interlacing processing method and a device. The video de-interlacing processing method comprises the following steps: an accumulative inter-field difference value and the inter-field absolute difference value are compared with a preset threshold value set to acquire a relatively precise sport grade, a static interpolation result and a dynamic interpolation result can be utilized in a weighted way more flexibly so as to acquire better de-interlacing effect.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to a motion detection method applied to video deinterlacing processing and a motion detection device. Background technique [0002] In order to reduce the transmission bandwidth and compress the storage space, the traditional analog TV industry generally adopts an interlaced scanning system, that is, a complete image is divided into two parts, odd field and even field, and transmitted separately, thus producing interlaced (Interlaced) video. However, this interlaced video cannot be directly displayed on progressive display devices in the current digital television industry, so it is necessary to convert the interlaced video to progressive video, which leads to the problem of video deinterlacing. [0003] At present, most terminal display devices adopt the motion-adaptive de-interlacing method. In motion detection, this method generally compares the absolute differen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01
CPCH04N7/012
Inventor 杨城范婷周晶晶
Owner XIAN NOVASTAR TECH
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