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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

If the process for the original image R0 is completed, in step S208, the image reduction process for the original image R0 is executed. For example, a reduced image R1 whose vertical and horizontal lengths are set to ? is generated.

The processes of steps S201 to S205 of the flowchart illustrated in FIG. 8 are repeatedly executed using the reduced image R1.

Thereafter, similarly, reduced images R2 to R6 are sequentially generated, and the processes of steps S201 to S205 of the flowchart illustrated in FIG. 8 are repeatedly executed using the reduced images R2 to R6.

Further, in the repetitive process, the size of the divisional/reduced region setting window is not reduced, and its original size is kept.

The reason for repeatedly executing the process using a plurality of reduced images as described above will be described with reference to FIG. 14.

FIG. 14 illustrates an active pixel counting process example in units of small regions using the divisional/reduced region setting window of the same size using the image R0 of the original size and the reduced image R5.

As the image is reduced, the image in the moving body detection frame is reduced as well.

A size of a person photographed in the image increases as it is closer to the camera and decreases as it is farther from the camera.

In other words, the size of the person photographed in the image has various sizes.

權(quán)利要求

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