Image living body detection method and device

The embodiment of the invention provides an image living body detection method and device, and the method comprises the steps: carrying out the semantic segmentation of a to-be-detected image, and obtaining a first mask image corresponding to a medium image block in the to-be-detected image; performing biological feature detection on the to-be-detected image to obtain boundary information of a biological feature image block in the to-be-detected image; performing pixel processing on the to-be-detected image based on the boundary information to obtain a second mask image corresponding to the biological feature image block; on the basis of the first mask image and the second mask image, performing overlapping degree calculation on the medium image block and the biological feature image block to obtain an overlapping degree; and determining a living body detection result of the to-be-detected image according to the overlapping degree. According to the embodiment of the invention, the accuracy of image living bod