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Side face detecting method and device based on head profile authentication

A side face and contour technology, applied in the field of video surveillance, can solve the problems of small head detection range, unstable head tracking, and inability to adapt to head detection, and achieve the effect of simplifying the process and lowering the technical threshold

Active Publication Date: 2015-12-30
济南宇视智能科技有限公司
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Problems solved by technology

[0007] In the above two schemes, there is the problem that the head detection range is small, and the head detection based on face detection cannot be adaptive and multi-angle, so that the head tracking based on this is bound to be unstable.

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  • Side face detecting method and device based on head profile authentication
  • Side face detecting method and device based on head profile authentication
  • Side face detecting method and device based on head profile authentication

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Embodiment Construction

[0065] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0066] The present invention provides a side face detection device based on head contour verification. The software implementation is taken as an example for description below, but the present invention does not exclude other implementations such as hardware or logic devices. Such as image 3 As shown, the hardware environment in which the device operates includes CPU, memory, non-volatile memory and other hardware. The device for side face detection based on head contour verification is a virtual device on a logic level, which is operated by a CPU. The device includes a skin color image acquisition unit, a skin color area acquisition unit, a hair color binarization processing unit, an interest area adjustment unit, an edge pixel determination unit, a contour template formulation unit, a top contour matching unit and a side face detection confirmation unit. Please ...

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Abstract

The present invention provides a side face detecting method and device based on head profile authentication. The method comprises a step of carrying out skin color binary processing on a collected image, carrying out communication component marking on the processed image, and obtaining a plurality of rectangular skin color areas, a step of carrying out hair color binary processing on the areas if the areas satisfy a preset skin color judgment condition, a step of adjusting an interest area according to the areas if the areas satisfy a preset hair color judgment condition, a step of detecting an edge pixel point in the interest area, a step of making a head top profile template according to the interest area, a step of using the template to carry out distribution in the interest area and calculating the edge pixel point quantities in the template in different positions, and a step of taking a quantity maximum value and determining that the rectangular skin color areas have an effective head and side face detection is successful if the maximum value reaches a preset edge pixel value. According to the method and the device, the problem of large angle side face detection is solved, the technical threshold of side face detection is lowered, and the flow of the side face detection is simplified.

Description

technical field [0001] The invention relates to the technical field of video surveillance, in particular to a method and device for detecting side faces based on head contour verification. Background technique [0002] At present, head detection is widely used in digital video processing, video detection, content-based retrieval, etc., and has important application value. Human head detection is a complex and challenging pattern detection. Its main difficulties are in two aspects: on the one hand, it is caused by the different characteristics of the human head. The human head has quite complex detail changes, such as hair color, skin color, glasses and head. On the other hand, due to changes in external conditions, different imaging angles cause multiple postures of the human head, such as front, side, and back, and the characteristics are different, as well as the influence of light, such as the brightness in the image, Contrast changes and shadows etc. These difficulties...

Claims

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Application Information

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IPC IPC(8): G06K9/00
Inventor 吕春旭
Owner 济南宇视智能科技有限公司
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