Method and system for detecting picture offset of camera device

A technology of camera device and offset detection, which is applied in the parts of TV system, image communication, image analysis, etc., can solve the problems of false motion detection, scene brightness change false motion detection, etc.

Inactive Publication Date: 2012-07-25
上海智觉光电科技有限公司
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AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for detecting image shift of a camera device, which can solve the problem of wrong motion detection caused by changes in scene brightness
[0007] In addition, the present invention also provides a camera device image shift detection system, which can solve the problem of wrong motion detection caused by scene brightness changes

Method used

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  • Method and system for detecting picture offset of camera device
  • Method and system for detecting picture offset of camera device
  • Method and system for detecting picture offset of camera device

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Embodiment 1

[0072] see figure 1 , the present invention discloses a method for detecting frame shift of a camera device, said method comprising the following steps:

[0073] [Step S1] The detection module obtains the digital image of the current frame from the front-end equipment.

[0074] [Step S2] Screen segmentation and feature extraction. The screen is segmented first, and a feature point is extracted as the most representative point in each area. The extracted features are nodes, including cross points and inflection points, and the point with the largest eigenvalue is used as a representative point. Subsequent frames use the same image segmentation and feature extraction operator to extract features.

[0075] image 3 It is a specific flowchart of the steps of image segmentation and feature extraction. After the image is divided into small areas, a representative feature point is proposed in each area. Whether it is a reference frame or a subsequent frame, it is divided into th...

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PUM

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Abstract

The invention discloses a method and system for detecting picture offset of a camera device. The method comprises the following steps of: a picture segmentation and feature extraction step, namely segmenting a picture into a plurality of small regions, and extracting a feature point from each region as a representative point; a feature point matching step, namely matching the feature points in reference frames and following frames, and therefore calculating the motion vector of each point; a motion vector filtering step, namely utilizing a matching threshold to filter wrong matching points, using the motion vectors of all feature points to build a motion vector field of the picture, and filtering wrong matching vectors through the context among similar feature vectors in the vector field; a background segmentation step, namely segmenting a static background region from the picture according to motion vector values; and a mobile judgment step, namely judging whether the camera device moves according to the accumulation times of static regions. According to the method and the system, the problem of wrong motion detection due to changes of scene brightness is solved, each pixel in the image does not need to be calculated, and the speed is obviously increased.

Description

technical field [0001] The invention belongs to the technical field of automatic detection, and relates to an offset detection method, in particular to an image offset detection method of an imaging device; at the same time, the invention also relates to an image offset detection system of an imaging apparatus. Background technique [0002] Injection molds are the most important molding equipment for injection molding products, and their quality is directly related to the quality of products. Moreover, since the mold occupies a large proportion of the production cost of the injection molding processing enterprise, its service life directly affects the cost of the injection molding product. Therefore, improving the quality of injection molds, maintaining and maintaining them through photoelectric technology, and prolonging their service life are important issues for injection molded product processing companies to reduce costs and increase efficiency. Injection molding produ...

Claims

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Application Information

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IPC IPC(8): G06T7/20H04N5/225
Inventor 游旭新
Owner 上海智觉光电科技有限公司
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