1. An on-vehicle image processing apparatus, comprising: a photographing device configured to photograph a road surface around a vehicle so as to obtain a photographed image; an image creation section configured to create an overhead view image showing a periphery of the vehicle when looked down from above the vehicle, based on the photographed image obtained by the photographing device; an extraction section configured to extract a road surface sign around the vehicle by using the overhead view image created by the image creation section; a detection section configured to detect one or more noises among at least a road surface noise, an obstruction noise, and an attached substance noise that are to be observed when the extraction section extracts the road surface sign; a correspondence relation information section configured to include information indicating regions that are to be selected from among a plurality of partial photographing regions in the photographed image and a plurality of partial overhead view regions in the overhead view image based on the one or more noises detected by the detection section; a selection section configured to select a selected image region from among the plurality of partial photographing regions in the photographed image and the plurality of partial overhead view regions in the overhead view image, based on the information included in the correspondence relation information section and the one or more noises detected by the detection section; a noise flag setting section configured to perform noise detection on the selected image region; and a parking frame recognition section configured to recognize a parking frame in the selected image region based on results of the noise detection on the selected image region performed by the noise flag setting section.