IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND STORAGE MEDIUM

• US 20120328152A1
• Filed: 05/29/2012
• Published: 12/27/2012
• Est. Priority Date: 06/22/2011
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Bamba, Yasuo
• Granted Patent: US 8,908,991 B2
• Time in Patent Office: Days
• US Class Current: 382/103
• CPC Class Codes: G06T 3/12 Panospheric to cylindrical image transformations

Abstract

A high-resolution image obtained by an image sensing operation by an image sensing unit, and a low-resolution image having a resolution lower than the high-resolution image are acquired. An object which satisfies a predetermined condition is detected from the low-resolution image, and an object recognition processing for a region corresponding to the object in the high-resolution image is performed, thus correcting geometric distortions of the region.

Claims

1. An image processing apparatus comprising:

an acquisition unit that acquires a high-resolution image obtained by an image sensing operation by an image sensing unit, and a low-resolution image having a resolution lower than the high-resolution image;

a detection unit that detects an object which satisfies a predetermined condition from the low-resolution image acquired by said acquisition unit;

a recognition unit that performs an object recognition processing for a region, which corresponds to the object, in the high-resolution image acquired by said acquisition unit; and

a correction unit that corrects geometric distortions of the region.

2. The apparatus according to claim 1, wherein said correction unit corrects the geometric distortion of the region in the high-resolution image acquired by said acquisition unit, and

said recognition unit executes processing for recognizing an object in the distortion corrected region.

3. The apparatus according to claim 1, wherein said detection unit detects the object from a low-resolution image sensed at an image sensing timing corresponding to an image sensing timing of the high-resolution image acquired by said acquisition unit.

4. The apparatus according to claim 1, wherein said acquisition unit acquires the low-resolution image by decimating pixels from the high-resolution image, together with the high-resolution image.

5. The apparatus according to claim 1, wherein the image sensing unit has an omni-directional mirror having a circular hyperboloidal, circular paraboloidal, or conical shape, or a fish-eye lens.

6. An image processing method executed by an image processing apparatus, comprising:

an acquisition step of acquiring a high-resolution image obtained by an image sensing operation by an image sensing unit, and a low-resolution image having a resolution lower than the high-resolution image;

a detection step of detecting an object which satisfies a predetermined condition from the low-resolution image acquired in the acquisition step;

a recognition step of performing an object recognition processing for a region, which corresponds to the object, in the high-resolution image acquired in the acquisition step; and

a correction step of correcting geometric distortions of the region.

7. The method according to claim 6, wherein in correction step, the geometric distortion of the region is corrected in the high-resolution image acquired in the acquisition step, and

in the recognition step, processing for recognizing an object in the distortion corrected region is executed.

8. The method according to claim 6, wherein in the detection step, the object is detected from a low-resolution image sensed at an image sensing timing corresponding to an image sensing timing of the high-resolution image.

9. The method according to claim 6, wherein in the acquisition step, the low-resolution image is acquired by decimating pixels from the high-resolution image, together with the high-resolution image.

10. A non-transitory computer-readable storage medium storing a program for controlling a computer to execute:

an acquisition step of acquiring a high-resolution image obtained by an image sensing operation by an image sensing unit, and a low-resolution image having a resolution lower than the high-resolution image;

a detection step of detecting an object which satisfies a predetermined condition from the low-resolution image acquired in the acquisition step;

a recognition step of performing an object recognition processing for a region, which corresponds to the object, in the high-resolution image acquired in the acquisition step; and

a correction step of correcting geometric distortions of the region.

11. The medium according to claim 10, wherein in correction step, the geometric distortion of the region is corrected in the acquired high-resolution image, and

in the recognition step, processing for recognizing an object in the distortion corrected region is executed.

12. The medium according to claim 10, wherein in the detection step, the object is detected from a low-resolution image sensed at an image sensing timing corresponding to an image sensing timing of the high-resolution image.

13. The medium according to claim 10, wherein in the acquisition step, the low-resolution image is acquired by decimating pixels from the high-resolution image, together with the high-resolution image.