Image processing device

An image processing device comprising:

• a hardware processor configured to:
• acquire a plurality of items of image information on a situation around a vehicle captured by a plurality of imagers provided in the vehicle;
• determine lateral image information as a particular state of luminance when a first region of interest exhibits luminance of a first given value or more and a difference in luminance between the first region of interest and a second region of interest is a second given value or more, the lateral image information representing an image of a lateral of the vehicle, the first region of interest being included in a vehicular front region of the lateral image information, the second region of interest being included in a vehicular rear region of the lateral image information;
• set, after the particular state of luminance is determined, a first correction value in accordance with luminance of the vehicular front region and sets a second correction value in accordance with luminance of rear image information, the first correction value for allowing the luminance of the first region of interest to match a first target luminance, the second correction value being for allowing the luminance of the second region of interest to match a second target luminance, the rear image information representing an image of a rear of the vehicle;
• and
• set, according to the first correction value and the second correction value, an individual correction value for correcting luminance of a region between the first region of interest and the second region of interest.