Face recognition method and system based on elastic context relation loss function
A loss function and face recognition technology, applied in neural learning methods, character and pattern recognition, instruments, etc., can solve the problems of lack of global information and affect the performance of face recognition, so as to speed up the training process and improve the accuracy of face recognition The effect of reducing useless redundant calculations
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[0040] The structure of the face recognition system based on the elastic context loss function of the present invention includes a preprocessing unit, a data block construction unit, a deep convolution network training unit, and a feature extraction and recognition unit. The relationship between these four units is as follows figure 1 shown.
[0041] like figure 2 Shown, the main steps of preprocessing unit among the present invention are:
[0042] Step (1): For the image to be processed, use face detection to determine whether the image contains a human face, if it does not contain a human face, re-acquire the image, otherwise proceed to step (2),
[0043] Step (2): Perform key point positioning on the included face image to obtain 25 key points in the face area.
[0044] Step (3): Use the coordinates of the 5 key points of the left and right eyes, nose tip, and left and right mouth corners to crop and normalize the image through operations such as image rotation, scaling...
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