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US 11,898,838 B2Granted
Adjustment method and measurement method
AssigneeSeiko Epson Corporation
InventorTaisuke Yamauchi
Life of this patent
Estimating the term…
Abstract
There is provided an adjustment method including, identifying correspondence between a projector coordinate system and a camera coordinate system, detecting brightness of a first area of a second captured image and brightness of a second area of the second captured image, estimating a range of first brightness of a third area of a second image, estimating a range of second brightness of a fourth area of the second image, and adjusting brightness of a fifth area corresponding to the third area in a projection image projected from the projector so as to fall within the range of the first brightness and adjusting brightness of a sixth area corresponding to the fourth area in the projection image so as to fall within the range of the second brightness.
Claims7
An adjustment method comprising:
- identifying correspondence between a projector coordinate system indicating a position in a first image and a camera coordinate system indicating a position in a first captured image based on the first image and the first captured image, the first image being projected from a projector onto a projection receiving object and the first captured image being produced by causing a first camera to capture an image of the projection receiving object with the first image projected thereon;
- detecting brightness of a first area of a second captured image and brightness of a second area of the second captured image produced by causing the first camera to capture an image of the projection receiving object with a second image projected thereon from the projector;
- estimating, for a third area of the second image that is an area associated with the first area in accordance with the correspondence, a range of first brightness that causes the brightness of the first area not to reach an upper and lower saturation point based on the detected brightness of the first area and brightness of the third area;
- estimating, for a fourth area of the second image that is an area associated with the second area in accordance with the correspondence, a range of second brightness that causes the brightness of the second area not to reach an upper and lower saturation point based on the detected brightness of the second area and brightness of the fourth area;
- and
- adjusting brightness of a fifth area corresponding to the third area in a projection image projected from the projector so as to fall within the range of the first brightness and adjusting brightness of a sixth area corresponding to the fourth area in the projection image so as to fall within the range of the second brightness.
3 more elements
A measurement method comprising:
- identifying correspondence between a projector coordinate system indicating a position in a first image and a camera coordinate system indicating a position in a first captured image based on the first image and the first captured image, the first image being projected from a projector onto a projection receiving object and the first captured image being produced by causing a first camera to capture an image of the projection receiving object with the first image projected thereon;
- detecting brightness of a first area of a second captured image and brightness of a second area of the second captured image produced by causing the first camera to capture an image of the projection receiving object with a second image projected thereon from the projector;
- estimating, for a third area of the second image that is an area associated with the first area in accordance with the correspondence, a range of first brightness that causes the brightness of the first area not to reach an upper and lower saturation point based on the detected brightness of the first area and brightness of the third area;
- estimating, for a fourth area of the second image that is an area associated with the second area in accordance with the correspondence, a range of second brightness that causes the brightness of the second area not to reach an upper and lower saturation point based on the detected brightness of the second area and brightness of the fourth area;
- adjusting brightness of a fifth area corresponding to the third area in a projection image projected form the projector so as to fall within the range of the first brightness and adjusting brightness of a sixth area corresponding to the fourth area in the projection image so as to fall within the range of the second brightness;
- measuring a three-dimensional shape of the projection receiving object based on a third captured image produced by causing the first camera to capture an image of the projection receiving object with the projection image projected thereon and a fourth captured image produced causing a second camera different from the first camera to capture an image of the projection receiving object with the projection image projected thereon.
3 more elements
A measurement method comprising:
- identifying correspondence between a projector coordinate system indicating a position in a first image and a camera coordinate system indicating a position in a first captured image based on the first image and the first captured image, the first captured image being produced by causing a first camera to capture an image of a projection receiving object with the first image projected thereon from a projector;
- detecting brightness of a first area of a second captured image and brightness of a second area of the second captured image produced by causing the first camera to capture an image of the projection receiving object with a second image projected thereon from the projector;
- estimating, for a third area of the second image that is an area associated with the first area in accordance with the correspondence, a range of first brightness that causes the brightness of the first area not to reach an upper and lower saturation point based on the detected brightness of the first area and brightness of the third area;
- estimating, for a fourth area of the second image that is an area associated with the second area in accordance with the correspondence, a range of second brightness that causes the brightness of the second area not to reach an upper and lower saturation point based on the detected brightness of the second area and brightness of the fourth area;
- adjusting brightness of a fifth area corresponding to the third area in a projection image projected form the projector so as to fall within the range of the first brightness and adjusting brightness of a sixth area corresponding to the fourth area in the projection image so as to fall within the range of the second brightness;
- and
- measuring a three-dimensional shape of the projection receiving object based on the projection image and a third captured image produced by causing the first camera to capture an image of the projection receiving object with the projection image projected thereon.
4 more elements
Dependencies are inferred from the claim text.