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Image processing apparatus, image processing system, and image processing method

專利號
US10867166B2
公開日期
2020-12-15
申請人
SONY CORPORATION（JP Tokyo）
發(fā)明人
Kazuhiro Shimauchi; Takashi Kohashi; Masakazu Ebihara; Yuji Ono; Hidetoshi Nagano
IPC分類
G06K9/00; G06T7/215; G06T7/292; G06K9/62; G06T7/20
技術(shù)領(lǐng)域
person,detection,candidate,in,image,frame,moving,body,process,point
地域： Tokyo

摘要

Provided are an apparatus and a method for executing a person detection process from an image. A divisional small region setting window is set and an image in the window is determined to be a person based on the number of moving body pixels of each divisional small region, and a first person candidate point is set in the window when the image is determined to be a person. A person determination process is executed based on an image feature quantity in a person determination detection frame, and a second person candidate point is set in the person determination detection frame when it is determined to be a person. A distribution state in a moving body detection frame of the person determination detection frame is analyzed, and an image in the person determination detection frame is determined to be a person based on an analysis result.

說明書

The threshold value illustrated in FIG. 10B is an example of a threshold value for determining whether or not the moving body pixel in the window corresponds to an upper body (head to chest) region of a person.

In the example illustrated in FIG. 10B, the following threshold values are set:

threshold values of the small regions a and d are 0 to 5% of the moving body pixel proportion;

threshold values of the small regions b and c are 40 to 60% of the moving body pixel proportion;

threshold values of the small regions e and h are 5 to 25% of the moving body pixel proportion; and

threshold values of the small regions f and g are 60 to 100% of the moving body pixel proportion.

The moving body pixel proportion of each small region calculated by applying the number of moving body pixels obtained by setting the window 151 illustrated in FIG. 10A and counting is compared with the predefined threshold value illustrated in FIG. 10B to determine whether or not the moving body in the window 151 is a person.

A specific determination process example is illustrated in FIG. 11.

FIG. 11 illustrates the following data such as data calculated using the divisional small region setting window 151 set at the upper end of the fourth moving body detection frame 144:

(1) a moving body pixel count number of each small region;

(2) a moving body pixel proportion of each small region;

權(quán)利要求

1
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