Multi-projector system, projector device, adjustment device, adjustment method, and computer-readabe recording medium

A projector device comprising:

• a light emission unit configured to modulate light from a light source according to an input image and emit the light as a projection image;
• an emission position adjustment unit configured to adjust an emission position of the light by the light emission unit;
• a capturing unit configured to capture the projection image projected on a medium to be projected to output a captured image;
• an analysis unit configured to analyze the captured image to acquire
• first luminance of a region where a first gradation region and a third gradation region are overlapped, the first gradation region and the third gradation region being included in an overlapped region of a first adjustment projection image and a second adjustment projection image,
• the first adjustment projection image being projected on the medium to be projected from the light emission unit, based on a first adjustment image having an adjustment region formed in a region corresponding to the overlapped region of a first projection image emitted from the light emission unit with a second projection image projected by another projector device, the adjustment region including the first gradation region and a second gradation region in which directions of luminance gradients intersect with each other,
• the second adjustment projection image being based on a second adjustment image having an adjustment region arranged in a region corresponding to the overlapped region of the second projection image projected by another projector device, the adjustment region including the third gradation region having a direction of a luminance gradient being opposite to the first gradation region, and a fourth gradation region having a direction of a luminance gradient being opposite to the second gradation region, and in which the third gradation region is arranged in a position corresponding to the first gradation region, and the fourth gradation region is arranged in a position corresponding to the second gradation region,
• second luminance of a region where the second gradation region and the fourth gradation region are overlapped, and
• third luminance of a region outside the overlapped region, in at least one of the first adjustment projection image and the second adjustment projection image;
• and
• a control unit configured to generate and output a control signal for controlling the emission position adjustment unit so that each of the first luminance and the second luminance acquired by the analysis unit is matched with the third luminance.

An adjustment device comprising:

• an analysis unit configured to analyze a captured image obtained by capturing a projection image projected on a medium to be projected to acquire
• first luminance of a region where a first gradation region and a third gradation region are overlapped, the first gradation region and the third gradation region being included in an overlapped region of a first adjustment projection image and a second adjustment projection image,
• the first adjustment projection image being projected on the medium to be projected from a light emission unit, based on a first adjustment image having an adjustment region formed in a region corresponding to an overlapped region of a first projection image emitted from the light emission unit of a first projector device with a second projection image projected by a second projector device, the adjustment region including the first gradation region and a second gradation region in which directions of luminance gradients intersect with each other,
• the second adjustment projection image being based on a second adjustment image having an adjustment region formed in a region corresponding to the overlapped region of the second projection image projected by the second projector device, the adjustment region including the third gradation region having a direction of a luminance gradient being opposite to the first gradation region, and a fourth gradation region having a direction of a luminance gradient being opposite to the second gradation region, and in which the third gradation region is arranged in a position corresponding to the first gradation region, and the fourth gradation region is arranged in a position corresponding to the second gradation region,
• second luminance of a region where the second gradation region and the fourth gradation region are overlapped, and
• third luminance of a region outside the overlapped region, in at least one of the first adjustment projection image and the second adjustment projection image;
• and
• a control unit configured to generate a control signal for adjusting an emission position of at least the first projection image by the light emission unit of the first projector device so that each of the first luminance and the second luminance acquired by the analysis unit is matched with the third luminance.

An adjustment method comprising the steps of:

• analyzing a captured image obtained by capturing a projection image projected on a medium to be projected to acquire
• first luminance of a region where a first gradation region and a third gradation region are overlapped, the first gradation region and the third gradation region being included in an overlapped region of a first adjustment projection image and a second adjustment projection image,
• the first adjustment projection image being projected on the medium to be projected from a light emission unit, based on a first adjustment image having an adjustment region formed in a region corresponding to an overlapped region of a first projection image emitted from the light emission unit of a first projector device with a second projection image projected by a second projector device, the adjustment region including the first gradation region and a second gradation region in which directions of luminance gradients intersect with each other,
• the second adjustment projection image being based on a second adjustment image having an adjustment region formed in a region corresponding to the overlapped region of the second projection image projected by the second projector device, the adjustment region including the third gradation region having a direction of a luminance gradient being opposite to the first gradation region, and a fourth gradation region having a direction of a luminance gradient being opposite to the second gradation region, and in which the third gradation region is arranged in a position corresponding to the first gradation region, and the fourth gradation region is arranged in a position corresponding to the second gradation region,
• second luminance of a region where the second gradation region and the fourth gradation region are overlapped, and
• third luminance of a region outside the overlapped region, in at least one of the first adjustment projection image and the second adjustment projection image;
• and
• generating a control signal for adjusting an emission position of at least the first projection image by the light emission unit of the first projector device so that each of the first luminance and the second luminance acquired by the analyzing step is matched with the third luminance.

A multi-projector system comprising:

• two or more projection devices including a first projection device and a second projection device;
• an image output device configured to output an image to each of the two or more projection devices;
• and
• an adjustment device configured to adjust projection positions of projection images on a medium to be projected, the projection images being projected by the two or more projection devices, and
• a first projection image emitted by the first projection device, and a second projection image emitted by the second projection device being projected on the medium to be projected to have an overlapped region, wherein
• each of the projection devices includes
• a light emission unit configured to modulate light from a light source according to an input image to emit the light as the projection image, and
• an angle adjustment unit configured to adjust an angle of the projection image emitted by the light emission unit,
• the image output device includes
• an output unit configured to output a first adjustment image and a second adjustment image as the input images of the first projection device and the second projection device, respectively,
• the first adjustment image having a first gradation region with luminance inclined in a first direction, formed in a region corresponding to the overlapped region of the first projection image,
• the second adjustment image having a second gradation region with luminance inclined in a second direction opposite to the first direction, and arranged in a position corresponding to the first gradation region, in a region corresponding to the overlapped region of the second projection image,
• the adjustment device includes
• a capturing unit configured to capture a projection image projected on a medium to be projected and output a captured image,
• an analysis unit configured to analyze the captured image to acquire luminance change in a direction perpendicular to the first direction, of a region where the first gradation region and the second gradation region are overlapped, the first gradation region and the second gradation region being included in an overlapped region of a first adjustment projection image projected on the medium to be projected by the first projection device, based on the first adjustment image, and a second adjustment projection image projected on the medium to be projected by the second projection device, based on the second adjustment image, and
• a control unit configured to output a first control signal for controlling the angle adjustment unit of the projection device so that the luminance change acquired by the analysis unit falls within a predetermined range.