Apparatus and method of correcting 3D image distortion

Patent metadata

Field	Value
Publication number	US-10997455-B2
Application number	US-201916383840-A
Country	US
Kind code	B2
Filing date	Apr 15, 2019
Priority date	Apr 26, 2018
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

Disclosed is an apparatus and method of correcting 3D image distortion. A method of correcting 3D image distortion according to the present disclosure includes: receiving an input image that contains a predetermined first pattern; extracting a characteristic value related to the first pattern from the input image; and updating the input image on the basis of the extracted characteristic value.

First claim

What is claimed is:

1. A method of correcting 3D image distortion, the method comprising:
receiving an input image that contains a first pattern;
extracting a characteristic value related to the first pattern from the input image;
generating a multiplexed image using a view image group and a multiplexing parameter, then display the multiplexed image on a display panel; and
updating the multiplexing parameter and the multiplexed image based on the extracted characteristic value.

2. The method of claim 1 , wherein the view image group includes at least one view image,
the view image contains a second pattern, the second pattern configured to be predetermined, and
the first pattern is an alteration in shape of the second pattern.

3. The method of claim 1 , wherein the characteristic value is at least one of a length and a slope of the first pattern.

4. The method of claim 2 ,
wherein the view image group includes n (n is a positive integer) view images, the view images are obtained in sequence by altering the second pattern corresponding to a view interval, and
when the n-th view image is altered by one view interval, the first view image is obtained.

5. The method of claim 2 , the updating of the multiplexed image comprises:
determining whether the characteristic value is present within a preset range; and
updating the multiplexing parameter for the view image depending on the result of the determination.

6. The method of claim 5 , wherein the multiplexing parameter is at least one among information on a cross-eyed placement period and information on a cross-eyed placement direction of the view image.

7. The method of claim 6 , wherein the multiplexing parameter includes the information on the cross-eyed placement period and the information on the cross-eyed placement direction, the updating of the multiplexing parameter comprises:
updating the information on the cross-eyed placement period depending on the result of the determination; and
updating the information on the cross-eyed placement direction depending on the result of the determination.

8. An apparatus for correcting 3D image distortion, the apparatus comprising:
an input unit receiving an input image that contains a first pattern;
a storage unit storing a characteristic value related to the first pattern; and
a control unit extracting the characteristic value from the input image and generating a multiplexed image using a view image group and a multiplexing parameter, then display the multiplexed image on a display panel and updating the multiplexing parameter and the multiplexed image based on the extracted characteristic value.

9. The apparatus of claim 8 , wherein the view image group includes at least one view image,
the view image contains a second pattern, the second pattern configured to be predetermined, and
the first pattern is an alteration in shape of the second pattern.

10. The apparatus of claim 8 , wherein the characteristic value is at least one of a length and a slope of the first pattern.

11. The apparatus of claim 9 , wherein the view image group includes n (n is a positive integer) view images, the view images are obtained in sequence by altering the second pattern corresponding to a view interval, and when the n-th view image is altered by one view interval, the first view image is obtained.

12. The apparatus of claim 9 , wherein the control unit is configured to:
determine whether the characteristic value is present within a preset range; and
update the multiplexing parameter for the view image depending on the result of the determination.

13. The apparatus of claim 12 , wherein the multiplexing parameter is at least one among information on a cross-eyed placement period and information on a cross-eyed placement direction of the view image.

14. The apparatus of claim 13 ,
wherein the multiplexing parameter includes the information on the cross-eyed placement period and the information on the cross-eyed placement direction,
the control unit is configured to:
update the information on the cross-eyed placement period depending on the result of the determination; and
update the information on the cross-eyed placement direction depending on the result of the determination.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Joon Soo
• Lee Gwang Soon

Classifications

• G06V10/98

  Detection or correction of errors, e.g. by rescanning the pattern or by human intervention; Evaluation of the quality of the acquired patterns · CPC title

• H04N13/122

  Improving the three-dimensional [3D] impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues (H04N13/128 takes precedence) · CPC title

• H04N13/317

  using slanted parallax optics · CPC title

• H04N13/125

  for crosstalk reduction · CPC title

• H04N13/161

  Encoding, multiplexing or demultiplexing different image signal components (for multi-view video sequence encoding H04N19/597) · CPC title