Patent Document ID: 9953235
Application ID: 14853345
Patent Status: 1

Claim One:
1. An image pickup device comprising: an image pickup means for taking an image including a vehicle number for identifying a vehicle running on a road in a predetermined frame period; an image division means for dividing each of frame images obtained from the image pickup means into at least an upper image and a lower image with respect to a running direction of the vehicle; a difference processing means for determining whether an inter-frame difference is present between the upper images of different frames and determining whether an inter-frame difference is present between the lower images of different frames; and an image output means for successively outputting one of the upper images which were determined to have the inter-frame difference by the difference processing means, and one of the lower images which were determined to have the inter-frame difference by the difference processing means, for each frame, to an image processor; wherein the image division means divides each of the frame images into at least the upper image and the lower image such that the upper image and the lower image overlap each other in a center region of the frame image.