PROJECTION APPARATUS, CONTROL METHOD, AND NON-TRANSITORY STORAGE MEDIUM

• US 20190320148A1
• Filed: 04/11/2019
• Published: 10/17/2019
• Est. Priority Date: 04/13/2018
• Status: Abandoned Application

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Sugimoto, Kousei
• Application Number:
  US16/381,724
• Publication Number:
  US 20190320148A1
• Time in Patent Office: Days
• CPC Class Codes: H04N 9/3105 for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators simultaneous projection in colour photography G03B33/10; beam splitting or combining systems per se G02B27/10
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026
• CPC Class Codes: H04N 9/3155 for controlling the light source light source control per se H05B35/00 – H05B47/00; control of an illumination source for displays in general G09G3/3406
• CPC Class Codes: H04N 9/3182 Colour adjustment, e.g. white balance, shading or gamut white balance per se H04N9/73; control of amplitude of colour signals H04N9/68; colour control circuits for displays in general G09G5/02, G09G3/2003, G09G3/3607

Abstract

A projection apparatus, among a plurality of projection apparatuses configured to project a plurality of projection images side by side as a single image, includes a light emission unit, a control unit configured to control the light emission unit to emit a light amount based on brightness of a first image, and a projection unit configured to modulate light emitted from the light emission unit based on the first image and project an image onto a projection plane, wherein the control unit is configured to control the light amount of the light emission unit based on the brightness of a first region of the first image, the first region adjoining a second image projected by another projection apparatus.

Claims

1. A projection apparatus, among a plurality of projection apparatuses configured to project a plurality of projection images side by side as a single image, the projection apparatus comprising:

a light emission unit;

a control unit configured to control the light emission unit to emit a light amount based on a brightness value of a first image signal; and

a projection unit configured to modulate light emitted from the light emission unit based on the first image signal and project a first projection image on a projection plane,

wherein the control unit is configured to control the light amount emitted by the light emission unit based on a brightness value of a first region of the first image signal, the first region adjoining a second projected image projected by another projection apparatus.

2. The projection apparatus according to claim 1, wherein the control unit is configured to control the light emission unit using a higher amount between a first light amount corresponding to the brightness value of the first region and a second light amount corresponding to a brightness value of a second region of the first image signal, the second region being wider than the first region.

3. The projection apparatus according to claim 1, further comprising a setting unit configured to set a control mode of the light emission unit,

wherein the control unit is configured to, if the control mode of the light emission unit is set to a first control mode by the setting unit, control the light emission unit with the light amount based on the brightness of the first region of the first image, and if the control mode of the light emission unit is set to a second control mode by the setting unit, control the light emission unit with a light amount based on the brightness of a second region of the first image, the second region being wider than the first region.

4. The projection apparatus according to claim 3, wherein the second region is an entire region of the first image.

5. The projection apparatus according to claim 1, further comprising a region setting unit configured to set the first region based on a designation from a user.

6. The projection apparatus according to claim 1, wherein the control unit is configured to control the light emission unit such that the greater an average value of pixel values included in the first region of the first image is, the higher the light amount is.

7. The projection apparatus according to claim 1, wherein the first region is a region including at least any one of a top end portion, a bottom end portion, a left end portion, and a right end portion of the first image.

8. A method for controlling a projection apparatus among a plurality of projection apparatuses configured to project a plurality of projection images side by side as a single image, the projection apparatus including a light emission unit and a modulation unit, the method comprising:

controlling the light emission unit to emit a light amount based on brightness of a first image; and

controlling the modulation unit to modulate light emitted from the light emission unit based on the first image and project an image onto a projection plane,

wherein the light amount of the light emission unit is controlled in the light emission control based on the brightness of a first region of the first image, the first region adjoining a second image projected by another projection apparatus.

9. The method for controlling a projection apparatus according to claim 8, wherein the light emission unit is controlled in the light emission control to emit a higher amount between a first light amount corresponding to the brightness of the first region, and a second light amount corresponding to the brightness of a second region of the first image, the second region being wider than the first region.

10. The method for controlling a projection apparatus according to claim 8, further comprising setting a control mode of the light emission unit,

wherein if the control mode of the light emission unit is set to a first control mode, the light emission unit is controlled in the light emission control to emit the light amount based on the brightness of the first region of the first image, and

wherein if the control mode of the light emission unit is set to a second control mode, the light emission unit is controlled to emit a light amount based on the brightness of a second region of the first image, the second region being wider than the first region.

11. The method for controlling a projection apparatus according to claim 10, wherein the second region is an entire region of the first image.

12. The method for controlling a projection apparatus according to claim 8, further comprising setting the first region based on a designation from a user.

13. The method for controlling a projection apparatus according to claim 8, wherein the light emission unit is controlled in the light emission control such that the greater an average value of pixels values included in the first region of the first image is, the higher the light amount is.

14. The method for controlling a projection apparatus according to claim 8, wherein the first region is a region including at least any one of a top end portion, a bottom end portion, a left end portion, and a right end portion of the first image.

15. A non-transitory storage medium storing a program for a processor to perform a method for controlling a projection apparatus among a plurality of projection apparatuses configured to project a plurality of projection images side by side as a single image, the projection apparatus including a light emission unit and a modulation unit, the method comprising:

controlling the light emission unit to emit a light amount based on brightness of a first image; and

controlling the modulation unit to module light emitted from the light emission unit based on the first image and project an image on a projection plane,

wherein the light amount of the light emission unit is controlled in the light emission control based on the brightness of a first region of the first image, the first region adjoining a second image projected by another projection apparatus.