Image processing sensor, image processing method, image processing program, and computer-readable recording medium and device having image processing program recorded therein

An image processing sensor for performing predetermined image processing on an image of an inspection target object to detect that the inspection target object is a non-defective product or a defective product, the image processing sensor comprising:

• an imaging unit configured to image the inspection target object;
• a display unit configured to display a live image of the inspection target object acquired by the imaging unit;
• an operation unit configured to receive an instruction for storing as a still image in a memory the live image displayed by the display unit so as to register the live image;
• an image registering unit configured to register, on the basis of the instruction from the operation unit, the live image corresponding to a non-defective product image or a model image and the live image corresponding to a defective product image, wherein the non-defective product image includes the inspection target object that represents the non-defective product displayed on the display unit, the model image serving as a reference of pass/fail determination and generated on the basis of the non-defective product image, and the defective product image including the inspection target object that represents the image of the defective product displayed on the display unit;
• a threshold calculating unit configured to calculate a threshold with respect to a matching degree indicating a degree of feature matching of the non-defective product image and the defective product image registered by the image registering unit;
• and
• a display control unit configured to cause the display unit to display the non-defective product image and the defective product image as the still image used for the calculation of the threshold by the threshold calculating unit, wherein
• the display control unit causes the display unit to display, on a first registration screen for registering the live image corresponding to one image of the non-defective product image and the defective product image, the live image, acquired by the imaging unit and, after receiving, with the operation unit, an instruction for registering the live image corresponding to the one image in a state in which the live image corresponding to the one image is displayed on the first registration screen, the display control unit causes the display unit to display, on a second registration screen for registering the live image corresponding to the other image of the non-defective product image and the defective product image, the live image acquired by the imaging unit and the already registered one image as the still image.