Multi-projector system, projector, method for adjusting image, and computer program product

A projector, comprising:

• a light-emitting unit configured to modulate light from a light source in accordance with an input image to emit the modulated light as a projected image;
• a color adjusting unit implemented by CPU and configured to control the input image in accordance with control data to adjust chromaticity of the projected image;
• a camera configured to take a projected image projected onto a projection medium and output a captured image;
• an analyzing unit implemented by CPU and configured to, when areas are provided by dividing an image frame corresponding to the projected image in a predetermined direction, two of which areas being positioned correspondingly to each other,
• a first adjustment projected image having red, green, and blue as three primary colors and cyan, magenta, and yellow as three complementary colors that are each complementary to a corresponding one of the three primary colors projected from the projector, and
• a second adjustment projected image having red, green, and blue as three primary colors and cyan, magenta, and yellow as three complementary colors that are each complementary to a corresponding one of the three primary colors projected from another projector,
• the first adjustment projected image projected onto the projection medium based on a first adjustment image and the second adjustment projected image projected onto the projection medium based on a second adjustment image being arranged in the predetermined direction with the positions of the respective areas matched, and when there is an overlapping area in the first adjustment projected image and the second adjustment projected image, analyze an image of the overlapping area from the captured image so as to determine a color component;
• and
• a controller implemented by CPU configured to generate and output the control data for controlling the color adjusting unit so that a mixed color of one of the primary colors and one of the complementary colors within the overlapping area becomes an achromatic color in accordance with the color component determined as a result of the analysis by the analyzing unit, wherein,
• the control data is applied to an entire image projected by the first projector.

A method for adjusting an image, performed by CPU, comprising:

• when areas are provided by dividing an image frame corresponding to a projected image in a predetermined direction, in two of the areas positioned correspondingly to each other, a first adjustment projected image projected onto a projection medium by a first projector based on a first adjustment image and a second adjustment projected image projected onto the projection medium by a second projector based on a second adjustment image are projected and arranged in the predetermined direction with the positions of the respective areas matched, the first adjustment image and the second adjustment image having red, green, and blue as three primary colors and cyan, magenta, and yellow as three complementary colors that are each complementary to a corresponding one of the three primary colors, and
• when there is an overlapping area in the first adjustment projected image and the second adjustment projected image,
• analyzing an image of the overlapping area from a captured image of projected images projected onto the projection medium so as to determine a color component;
• and
• generating and outputting control data for adjusting at least the color of the first adjustment projected image projected by the first projector so that a mixed color of one of the primary colors and one of the complementary colors within the overlapping area becomes an achromatic color in accordance with the color component determined as a result of the analysis at the analyzing, wherein
• the control data is applied to an entire image projected by the first projector.