Image processing device

• US 8,670,590 B2
• Filed: 07/30/2009
• Issued: 03/11/2014
• Est. Priority Date: 08/01/2008
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Uchida, Naohide
• Primary Examiner(s): TUCKER, WESLEY J
• Application Number:
  US13/057,028
• Publication Number:
  US 20110135159A1
• Time in Patent Office: 1,685 Days
• Field of Search: 382103-107, 382/291
• US Class Current: 382/103
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/20012 Locally adaptive
• CPC Class Codes: G06T 2207/30236 Traffic on road, railway or crossing
• CPC Class Codes: G06T 7/269 using gradient-based methods

Abstract

An image processing device for improving the accuracy of optical flow calculation when an optical flow is calculated in a window unit. An image processing device for calculating an optical flow on the basis of image information within a window for a processing target using a plurality of images captured at different times includes position acquisition means which acquires position information of the processing target and setting means which sets a size of a window for calculating an optical flow on the basis of the position information acquired by the position acquisition means.

Claims

1. An image processing device for calculating an optical flow on the basis of image information within a window for a processing target using a plurality of images captured at different times, comprising:

position acquisition means which acquires position information of the processing target; and

setting means which sets a size of a window for calculating an optical flow on the basis of the position information acquired by the position acquisition means;

wherein the setting means increases the window size as a lateral position difference becomes larger, the lateral position difference being a difference between an image capture position where a camera is attached and a position where the processing target exists.

2. The image processing device of claim 1, wherein the position acquisition means is a radar, and

sets the processing target on the basis of a detection result of the radar.

3. An image processing device for calculating an optical flow on the basis of image information within a window for a processing target using a plurality of images captured at different times, comprising:

a position acquisition unit that acquires position information of the processing target; and

an electronic control unit configured to set a size of a window for calculating an optical flow on the basis of the position information acquired by the position acquisition unit;

wherein the electronic control unit increases the window size as a lateral position difference becomes larger, the lateral position difference being a difference between an image capture position where a camera is attached and a position where the processing target exists.

4. The image processing device of claim 3, wherein the position acquisition unit is a radar device, and

wherein the electronic control unit sets the processing target on the basis of a detection result of the radar device.