Method for accurately and efficiently extracting human head ellipse and detecting shielded human face
An extraction method and ellipse technology, which is applied in the field of masked face detection, can solve the problems of high time complexity of the Gaussian background model and insufficient ability of masked face detection, achieving adjustable complexity, low background update complexity, and applicable wide range of effects
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[0041] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0042] Such as figure 1 As shown, the present invention mainly includes background update, rectangular area locking and ellipse self-adaptive adjustment algorithm in the process of accurately extracting the human head ellipse.
[0043] In terms of background updates like figure 2 As shown, taking into account the requirements of real-time processing, the update method based on statistical laws is adopted, and the standard deviation of the frame difference before and after is calculated as the b...
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