Projection system, projector, program, information storage medium and image processing method

A projection system, the system comprising:

• a measurement section which measures a calibration image in an image display area and outputs measurement data;
• a judgment section which judges whether or not image information of a normal image different from the calibration image has been inputted;
• a calibration information output section which outputs calibration information used for projecting the calibration image;
• an update section which updates predetermined correction information based on the measurement data and information indicating an ideal image appearance;
• a correction section which corrects the image information based on the updated correction information;
• and
• a projection type image display section which projects the calibration image onto the image display area based on the calibration information and projects the normal image onto the image display area based on the corrected image information,
• wherein the calibration information output section starts outputting the calibration information when the judgment section judges that the image information of the normal image is not inputted while the calibration information has not been outputted.

A projector comprising:

• a measurement means for measuring a calibration image in an image display area and outputting measurement data;a judgment means for judging whether or not image information of a normal image different from the calibration image has been inputted;
• a calibration information output means for outputting calibration information used for projecting the calibration image;
• an update means for updating predetermined correction information based on the measurement data and information indicating an ideal image appearance;
• a correction means for correcting the image information based on the updated correction information;
• and
• a projection type image display means for projecting the calibration image onto the image display area based on the calibration information and projects the normal image onto the image display area based on the corrected image information,
• wherein the image display area is an area onto which an image projected by the projection type image display means is displayed,
• wherein the measurement means derives XYZ values by measuring the projected calibration image, and
• wherein the calibration information output means starts outputting the calibration information when the judgment means judges that the image information of the normal image is not inputted while the calibration information has not been outputted.

A projector comprising:

• a measurement section which measures a calibration image in an image display area and outputs measurement data;
• a judgment section which judges whether or not image information of a normal image different from the calibration image has been inputted;
• a calibration information output section which outputs calibration information used for projecting the calibration image;
• an update section which updates predetermined correction information based on the measurement data and information indicating an ideal image appearance;
• a correction section which corrects the image information based on the updated correction information;
• and
• a projection type image display section which projects the calibration image onto the image display area based on the calibration information and projects the normal image onto the image display area based on the corrected image information,
• wherein the image display area is an area onto which an image projected by the projection type image display section is displayed,
• wherein the measurement section derives XYZ values by measuring the projected calibration image, and
• wherein the calibration information output section starts outputting the calibration information when the judgment section judges that the image information of the normal image is not inputted while the calibration information has not been outputted.

A computer-readable program causing a computer to function as:

• a measurement control means for causing a measurement means to measure a calibration image in an image display area and to output measurement data;
• a judgment means for judging whether or not image information of a normal image different from the calibration image has been inputted;
• a calibration information output means for outputting calibration information used for projecting the calibration image;
• an update means for updating predetermined correction information based on the measurement data and information indicating an ideal image appearance;
• a correction means for correcting the image information based on the updated correction information;
• and
• a display control means for causing a projection type image display means to perform display operation, the projection type image display means projecting the calibration image onto the image display area based on the calibration information and projecting the normal image onto the image display area based on the corrected image information,
• wherein the calibration information output means starts outputting the calibration information when the judgment means judges that the image information of the normal image is not inputted while the calibration information has not been outputted.

An information storage medium storing a computer-readable program causing a computer to function as:

• a measurement control means for causing a measurement means to measure a calibration image in an image display area and to output measurement data;
• a judgment means for judging whether or not image information of a normal image different from the calibration image has been inputted;
• a calibration information output means for outputting calibration information used for projecting the calibration image;
• an update means for updating predetermined correction information based on the measurement data and information indicating an ideal image appearance;
• a correction means for correcting the image information based on the updated correction information;
• and
• a display control means for causing a projection type image display means to perform display operation, the projection type image display means projecting the calibration image onto the image display area based on the calibration information and projects the normal image onto the image display area based on the corrected image information,
• wherein the calibration information output means starts outputting the calibration information when the judgment means judges that the image information of the normal image is not inputted while the calibration information has not been outputted.

An image processing method comprising:

• projecting calibration image onto an image display area when image information of normal image has not been inputted;
• measuring the projected calibration image;
• updating color correction information for correcting color of image information, based on XYZ values from the measurement data;
• updating brightness correction information for correcting brightness of the image information, based on a luminance value from the measurement data;
• correcting the image information based on the color correction information and correcting the corrected image information based on the brightness correction information, when the image information of the normal image has been inputted;
• and
• projecting the normal image based on the corrected image information.