Image processing apparatus, image processing method, and image processing program

Abstract

An image processing apparatus includes a memory; and a processor configured to: generate a binary image from a target image by using a first trained model that binarizes the target image into object regions and a background region and generates the binary image; predict contour lines of the object regions in the binary image by using a second trained model that predicts the contour lines of the object regions in the binary image; generate an expanded contour line image by performing expansion processing on the predicted contour lines; generate a foreground region image based on the binary image and the expanded contour line image; and use background pixels identified based on the binary image, boundary pixels identified based on the expanded contour line image, and foreground pixels identified based on the foreground region image to divide the target image into the object regions by a watershed method.