Dynamic image processing method and system for processing vehicular image

• US 9,087,256 B2
• Filed: 03/04/2013
• Issued: 07/21/2015
• Est. Priority Date: 10/23/2012
• Status: Active Grant

• Current Assignee: Avisonic Technology Corporation (Elan Microelectronics Corporation)
• Original Assignee: Avisonic Technology Corporation (Elan Microelectronics Corporation)
• Inventors: Yu, Chi-Chang
• Primary Examiner(s): Dang, Duy M
• Application Number:
  US13/783,418
• Publication Number:
  US 20140112597A1
• Time in Patent Office: 869 Days
• Field of Search: 382/104, 382/154, 382/294, 348/47, 348/187
• US Class Current: 1/1
• CPC Class Codes: B60R 1/00 Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
• CPC Class Codes: B60R 2300/607 from a bird's eye viewpoint
• CPC Class Codes: G06T 3/4038 Image mosaicing, e.g. composing plane images from plane sub-images
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

A dynamic image processing method includes: providing a plurality of first images; synthesizing the first images to generate a second image; selecting a plurality of calibration points on the second image; performing a geometric transformation upon the first images; performing the geometric transformation upon the calibration points to generate a plurality of transformed calibration points; and generating at least one image characteristic boundary according to the transformed calibration points.

Claims

1. A dynamic image processing method, comprising:

providing a plurality of first images;

synthesizing the first images to generate a second image;

selecting a plurality of calibration points on the synthesized second image;

performing a same geometric transformation upon the first images, wherein the geometric transformation is one of a rotation operation, a shifting operation, a magnification operation, a minimization operation, a tilt operation and a viewing angle changing operation;

performing the geometric transformation upon the calibration points to generate a plurality of transformed calibration points; and

generating at least one image characteristic boundary according to the transformed calibration points.

2. The dynamic image processing method of claim 1, wherein the at least one image characteristic boundary is at least one image stitching line, and the method further comprises:

synthesizing the geometrically transformed first images according to the at least one image stitching line, and accordingly generating the geometrically transformed second image.

3. The dynamic image processing method of claim 2, wherein the second image comprises at least one overlapping region between the adjacent first images, and the selected calibration points are located in the at least one overlapping region.

4. The dynamic image processing method of claim 1, wherein the at least one image characteristic boundary is at least one warning line.

5. The dynamic image processing method of claim 4, wherein the second image comprises an object image;

the at least one warning line is located around the object image of the second image; and

the at least one warning line is used to determine if any object passes the at least one warning line and approaches the object image.

6. The dynamic image processing method of claim 1, wherein the step of providing the first images comprises:

receiving a plurality of sub-images; and

performing an image correction upon the sub-images to generate the first images, respectively.

7. The dynamic image processing method of claim 1, wherein the step of synthesizing the first images to generate the second image comprises:

obtaining an image stitching line from an overlapping region between the adjacent first images.

8. The dynamic image processing method of claim 7, wherein the step of selecting the calibration points on the synthesized second image comprises:

selecting the calibration points on the image stitching line.

9. A dynamic image processing system, comprising:

a processing unit, for performing a synthesis operation or a geometric transformation upon a same plurality of first images, and selecting a plurality of calibration points on a second image to generate calibration point information, wherein the second image is generated after the synthesis operation is performed upon the first images; and

a storage unit, coupled to the processing unit, for storing the calibration point information;

wherein when the processing unit is arranged to perform the geometric transformation upon the first images, the processing unit is arranged to perform the geometric transformation upon the calibration points to generate a plurality of transformed calibration points, and generate at least one image characteristic boundary according to the transformed calibration points; and

the geometric transformation is one of a rotation operation, a shifting operation, a magnification operation, a minimization operation, a tilt operation and a viewing angle changing operation.