improved LeNet-5 fusion network traffic sign recognition method for assisting driving
A technology for traffic sign recognition and assisted driving, applied in the field of image recognition, can solve the problems of low accuracy and achieve the effects of improving accuracy, improving network accuracy, and increasing network depth
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[0041] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0042] 1 Convolutional Neural Network
[0043] 1.1 Convolution layer
[0044] In Convolutional Neural Networks, convolutional layers are used for feature extraction. After the feature map of the previous layer is input, each convolution kernel is convolved with it, and the convolution kernel slides on the feature map with a certain step size, and performs a convolution operation every time it slides, and finally obtains this A feature map of the layer, so that each feature map has a certain relationship with several feature maps of the upper layer. Each convolution kernel can extract one feature, and n convolution kernels can extract n kinds of features to obtain n feature maps. The calculation formula of the general convolutional layer is shown in formula (1):
[0045]
[0046] Among them, l represents the first layer; w ij Represents the convolution kernel; ...
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