Image key point detection method and device, terminal and storage medium

The embodiment of the invention discloses an image key point detection method and device, a terminal and a storage medium. The method comprises the steps of obtaining a target image and a preset feature map; convolution processing is carried out on the target image to obtain an output matrix, the output matrix is composed of a plurality of matrix elements, and the matrix elements are in one-to-one correspondence with feature image pixels in a preset feature map; weighting the coordinates of the feature image pixels according to the matrix elements to obtain weighted pixel coordinates of the feature image pixels corresponding to the matrix elements; summing the weighted pixel coordinates to obtain coordinates of key points in the preset feature map; and determining the coordinates of the key points in the target image mapped by the coordinates of the key points in the preset feature map. According to the embodiment of the invention, a new image key point detection mode is provided, the coordinates of the key p