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Image processing method based on face image characteristics

An image processing and facial image technology, applied in the field of image processing, can solve the problems of reduced facial information, difficulty in filtering out interference information, loss of high-definition facial image detail information, etc., to achieve the effect of convenient physical condition

Inactive Publication Date: 2015-04-29
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

[0034] The current image processing algorithm is slow in processing high-definition facial images, and it is easy to lose the detailed information of high-definition facial images, and the amount of facial information is reduced, resulting in the loss of a lot of useful information in facial feature processing.
In addition, facial images are easily affected by external lighting and other factors, and it is difficult for the above algorithm to filter out interference information.

Method used

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  • Image processing method based on face image characteristics
  • Image processing method based on face image characteristics
  • Image processing method based on face image characteristics

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Embodiment Construction

[0057] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0058] Such as figure 1 Shown, the present invention comprises the steps:

[0059] one. color image

[0060] 1. Collect multiple groups of photos of different states of the face in the morning and two nights, read in the facial RGB images respectively, convert the images into HSI space, calculate the eigenvalues ​​of the hue, saturation and brightness of each group, and synthesize the three variance and composite standard deviation, and calculate the respective means. The data are shown in Tables 1 and 2:

[0061] Table 1 Morning facial color features

[0062]

[0063]

[0064] Table 2 Nighttime facial color features

[0065]

[0066]

[0067] 2. Calculate the difference percentage and its sum: Calculate the difference percentage D of chroma, saturation, brightness, composite variance, and composite standard deviation for each group of morning state...

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Abstract

The invention discloses an image processing method based on face image characteristics. The image processing method comprises the steps of: obtaining the maximum characteristic region and colors and aberration of the region at morning and night states according to HIS space components of face images of a plurality of testees at morning and night so as to form a color characteristic vector; obtaining a textural characteristic vector of the maximum characteristic region by using a co-occurrence matrix; and constructing one set of judgment criterion through a total structure of a database data color characteristic vector and the textural characteristic vector, and thus providing a state judgment method. The image processing method can be conveniently used for carrying out state detection immediately by people, can be applied to an intelligent phone, is convenient and rapid, and has a bright application prospect.

Description

Technical field: [0001] The patent of the invention relates to the field of image processing, which is used to measure the state of the human face, and specifically relates to an image processing method based on facial image features. Background technique: [0002] In the field of image processing, there are various processing methods for facial features, the most common ones are: [0003] Basic Algorithm Selection [0004] (1) Method based on geometric features [0005] The method based on geometrical features (Geometrical Features Based) is an early face recognition algorithm. This method requires that the selected feature vectors have certain uniqueness, not only to reflect the differences of different faces, but also to have certain flexibility to reduce or eliminate the influence of illumination differences. The geometric feature vector is a feature vector based on the shape and geometric relationship of the facial organs, and its components usually include the Eucli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 周秦武张军张啸宇强敢峯张凤华蔡云丽
Owner XI AN JIAOTONG UNIV
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