1. An image processor, comprising: an image pickup part configured to pick up a pickup image of a certain area; an irradiator configured to irradiate at least a part of the certain area for the pickup image picked up by the image pickup part; an extractor configured to extract, as an irradiation image, a light irradiated from the irradiator, the irradiation image being extracted from the pickup image picked up by the image pickup part; an image generating part configured to generate an irradiation removed image which is obtained by removing the irradiation image from the pickup image; an object recognizer configured to recognize an object in the certain area, based on the irradiation removed image generated by the image generating part; and a distance sensor configured to sense a distance to the object recognized by the object recognizer.