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An image detection method and device based on a cascade classifier

A cascade classifier, image detection technology, applied in the field of image processing, can solve the problem of easy loss of image detection information

Active Publication Date: 2020-10-23
北京君正集成电路股份有限公司
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Problems solved by technology

[0006] The present invention provides an image detection method and device based on cascaded classifiers, which can solve the problem that image detection information is easily lost

Method used

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  • An image detection method and device based on a cascade classifier
  • An image detection method and device based on a cascade classifier
  • An image detection method and device based on a cascade classifier

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] like figure 1 As shown, the embodiment of the present invention provides a cascaded classifier-based image detection method, including the following steps:

[0023] S11. Perform a preprocessing operation on the image to be detected to obtain a gray value of the image.

[0024] Input a video frame image, and perform scaling and grayscale conversion operations on the image of the current frame.

[0025] S12. Extracting the local relative difference (Loc...

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Abstract

The present invention disclosed a class -level -based image detection method and device, which involves the field of image processing, and solves the problem of easy loss of image detection information in existing technologies.The image detection method based on the classification classifier of the present invention includes: pre -processing operations to detect the image to obtain the ash value of the image; the local correlation characteristics of the pixel is extracted according to the gray value of the image;The difference feature, calculate the absolute normalized gradient characteristics of the image block; use the class classification classifier to use the absolutely natural gradient characteristics to detect the image block, and save the image of the class classifier as the goal as the goal as the goal as the goal.image.The embodiments of the present invention are mainly used to identify and judge the face or other objects in the video image.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image detection method and device based on cascade classifiers. Background technique [0002] With the improvement of security requirements, the commercial value of technologies such as people flow statistics, personnel feature recognition, and face recognition have begun to emerge, and they have gradually begun to be applied. Face detection, as the primary link of these tasks, has a very important role and significance , in recent years, researchers have invested a lot of time and energy in this field, devoting themselves to developing a fast and accurate face detection method. [0003] At present, the commonly used face detection algorithm is to segment the image and obtain recognition features through edge detection. A cascade of classifiers classifies images according to the corresponding recognition features to detect images with human faces. However, i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62
CPCG06F18/24
Inventor 余慧
Owner 北京君正集成电路股份有限公司
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