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

An image processing apparatus comprising:

• a display controller that displays a cell morphological image capturing a shape of a cell on a display;
• an acquisitor that acquires a region-identifiable image for identifying a first cell region occupied by a specific portion of the cell in the cell morphological image using a first display element;
• an inputter that receives a signal responding to a user's operation;
• adder that adds, to the region-identifiable image, a second display element that identifies at least an outline portion of a second cell region occupied by the specific portion other than the first cell region in the cell morphological image depending on a predetermined signal set in advance and input to the inputter;
• and
• a corrector configured to correct the region-identifiable image such that a display element that identifies the first cell region is displayed by the display controller on the display unit for at least a part of an overlapping area where the first and second cell regions overlap each other;
• wherein the corrector is further configured to provide a gap between the display element that identifies the first cell region and the display element that identifies the second cell region in the region-identifiable image according to an occupation ratio, the occupation ratio representing how much the first display element occupies a closed region formed by the second display element in the cell morphological image.