PROJECTION APPARATUS AND METHOD FOR CONTROLLING THE SAME, AND A COMPUTER-READABLE STORAGE MEDIUM

• US 20150312563A1
• Filed: 07/08/2015
• Published: 10/29/2015
• Est. Priority Date: 07/16/2014
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ito, Motohisa
• Granted Patent: US 9,686,534 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04N 13/128 Adjusting depth or disparity
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026

Abstract

A projection apparatus for projecting a plurality of stereoscopic images such that portions thereof overlap each other and displaying one stereoscopic image, the apparatus includes a projection unit adapted to project an indicator that is an image for adjusting a stereoscopic degree corresponding to a parallax between a projected left image and a projected right image, in an overlapping region where the plurality of stereoscopic images overlap each other; a detection unit adapted to detect a parallax between an indicator in the left image and an indicator in the right image based on a captured image of a projected indicator; and an adjustment unit adapted to adjust stereoscopic degrees of the plurality of stereoscopic images by an adjustment amount that is determined based on the detected parallax.

Claims

1. A projection apparatus for projecting a plurality of stereoscopic images such that portions thereof overlap each other and displaying one stereoscopic image, the apparatus comprising:

a projection unit adapted to project an indicator that is an image for adjusting a stereoscopic degree corresponding to a parallax between a projected left image and a projected right image, in an overlapping region where the plurality of stereoscopic images overlap each other;

a detection unit adapted to detect a parallax between an indicator in the left image and an indicator in the right image based on a captured image of a projected indicator; and

an adjustment unit adapted to adjust stereoscopic degrees of the plurality of stereoscopic images by an adjustment amount that is determined based on the detected parallax.

2. The projection apparatus according to claim 1,

wherein the adjustment unit compares a parallax between the indicator in the left image and the indicator in the right image with a predetermined target value, and adjusts the stereoscopic degrees of the plurality of stereoscopic images.

3. The projection apparatus according to claim 2,

wherein the indicator includes a plurality of parts, and the plurality of parts includes parts having stereoscopic degrees that are different from each other, and

the adjustment unit compares parallaxes of captured images of the parts having stereoscopic degrees that are different from each other with the target value, and adjusts the stereoscopic degrees of the plurality of stereoscopic images.

4. The projection apparatus according to claim 3,

wherein the projection unit projects some of the plurality of parts within the overlapping region, and projects the remaining parts outside the overlapping region.

5. The projection apparatus according to claim 1,

wherein the projection unit projects, in a region where a first partial stereoscopic image and a second partial stereoscopic image overlap each other, a first indicator that overlaps the first partial stereoscopic image, and a second indicator that overlaps the second partial stereoscopic image,

the detection unit detects a parallax of each of the first indicator and the second indicator, and

the adjustment unit adjusts a stereoscopic degree of the first partial stereoscopic image by an adjustment amount that is based on the parallax of the first indicator, and adjusts a stereoscopic degree of the second partial stereoscopic image by an adjustment amount that is based on the parallax of the second indicator.

6. The projection apparatus according to claim 1,

wherein the indicator is generated by invisible light.

7. The projection apparatus according to claim 1,

wherein the projection unit projects the indicator using visible light or invisible light in accordance with an instruction from an operator, and

if the indicator is projected using visible light, the adjustment unit adjusts the stereoscopic degrees of the plurality of stereoscopic images in accordance with an instruction from the operator.

8. The projection apparatus according to claim 1,

wherein the plurality of stereoscopic images that are to be displayed are moving images.

9. The projection apparatus according to claim 8,

wherein the adjustment unit adjusts the stereoscopic degrees of the plurality of stereoscopic images for each frame of the moving images.

10. The projection apparatus according to claim 8,

wherein the adjustment unit adjusts the stereoscopic degrees of the plurality of stereoscopic images if an adjustment amount that is determined based on the parallax detected by the detection unit exceeds a predetermined threshold.

11. A method for controlling a projection apparatus for projecting a plurality of stereoscopic images such that portions thereof overlap each other and displaying one stereoscopic image, the method comprising:

a projection step of projecting an indicator that is an image for adjusting a stereoscopic degree corresponding to a parallax between a projected left image and a projected right image, in an overlapping region where the plurality of stereoscopic images overlap each other, by a projection unit;

a detection step of detecting a parallax between an indicator in the left image and an indicator in the right image based on a captured image of a projected indicator, by a detection unit; and

an adjustment step of adjusting stereoscopic degrees of the plurality of stereoscopic images by an adjustment amount that is determined based on the detected parallax, by an adjustment unit.

12. A non-transitory computer-readable storage medium storing a computer program for causing a computer to function as each unit of a projection apparatus for projecting a plurality of stereoscopic images such that portions thereof overlap each other and displaying one stereoscopic image, the apparatus comprising:

a projection unit adapted to project an indicator that is an image for adjusting a stereoscopic degree corresponding to a parallax between a projected left image and a projected right image, in an overlapping region where the plurality of stereoscopic images overlap each other;

a detection unit adapted to detect a parallax between an indicator in the left image and an indicator in the right image based on a captured image of a projected indicator; and

an adjustment unit adapted to adjust stereoscopic degrees of the plurality of stereoscopic images by an adjustment amount that is determined based on the detected parallax.