Method for detecting construction worker safety clothing in image based on neural network
A neural network and detection method technology, applied in instruments, computing, character and pattern recognition, etc., can solve the problems of high computational overhead and complex process, and achieve the requirements of low cost, small computing resources and storage space, and hardware saving. Effect
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[0058] refer to figure 1 As shown, the present invention discloses a neural network-based method for detecting safety clothing of construction workers in an image, comprising the following steps:
[0059] S1, get n key points of the body of the person in the frame {P 1 ,P 2 ,P 3 …P n}, and express their coordinate values as:
[0060] {P 1 =(x 1 ,y 1 ),P 2 =(x 2 ,y 2 ),P 3 =(x 3 ,y 3 ),…P n =(x n ,y n )}.
[0061] S2, extract the detection area of clothing according to the key points, the extraction method is:
[0062] a, For a non-centrosymmetric detection area centered on the human spine, if the detection area is the key point P n-2 itself, the center point of its detection area is the key point, and the height H n-2 and width W n-2 They are:
[0063] h n-2 =|P n-2 -P n |*A 1
[0064] W n-2 =|P n-2 -P n |*A 2
[0065] Among them, P n is the key point P n-2 Adjacent keypoints, A 1 and A 2 are constants not greater than 1;
[0066] b. For...
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