JP2013229846A5 - - Google Patents

Description

  An image processing apparatus according to the present invention includes an acquisition unit that acquires luminance characteristics of a plurality of projection units arranged so as to form a combined projection region so as to overlap at least a part of the projection region of each projection unit; Based on the acquired luminance characteristics of the plurality of projection means, the projected image data is corrected so that the luminance distribution between two points in one horizontal or vertical line of the combined projection area becomes a luminance distribution defined by a concave function. And a correction means for performing the above.

Claims (12)

Acquisition means for acquiring luminance characteristics of a plurality of projection means arranged to form a combined projection area so as to overlap at least a part of the projection area of each projection means;
Based on the acquired luminance characteristics of the plurality of projection means, the image data to be projected is adjusted so that the luminance distribution between two points in one horizontal or vertical line of the combined projection area becomes a luminance distribution defined by a concave function. An image processing apparatus comprising correction means for correcting.   The image processing apparatus according to claim 1, wherein the luminance distribution of the combined projection area is based on a maximum luminance value that can be output by each projection unit.   The image processing apparatus according to claim 2, wherein the correction unit determines the luminance distribution so that the luminance distribution is lower than the maximum luminance value of a projection region corresponding to the distribution. An image pickup means for picking up calibration image data projected from the plurality of projection means;
The image processing apparatus according to claim 1, wherein the correction unit acquires a luminance characteristic of the projection unit by imaging with the imaging unit.   5. The apparatus according to claim 1, further comprising setting means for setting the luminance distribution within a range in which luminance between two points in one horizontal or vertical line is a distribution defined by a concave function. The image processing apparatus described.   The image processing apparatus according to claim 1, wherein the correction unit determines the luminance distribution based on luminance values of pixels located at both ends and a center of the combined projection region.   7. The correction means determines the luminance distribution by applying luminance values of pixels having low luminance characteristics among the plurality of projection means to the luminance values of pixels located at both ends. An image processing apparatus according to 1.   The image processing apparatus according to claim 1, wherein the luminance distribution of the combined projection area is based on a minimum luminance value that can be output by each projector.   The image processing apparatus according to claim 8, wherein the correction unit determines the luminance distribution so that the luminance distribution is higher than the lowest luminance value of a projection region corresponding to the distribution. A multi-projection system composed of a plurality of projectors arranged to form a combined projection region so as to overlap at least a part of the projection region of each projector,
Correction for correcting the projected image data based on the luminance characteristics of the plurality of projectors so that the luminance distribution between two points in one horizontal or vertical line of the combined projection area is a luminance distribution defined by a concave function A multi-projection system comprising means. An acquisition step of acquiring luminance characteristics of a plurality of projection means arranged to form a combined projection area so as to overlap at least a part of the projection area of each projection means;
Based on the acquired luminance characteristics of the plurality of projection means, projection is performed so that the luminance distribution of the combined projection area is a luminance distribution defined by a concave function between two points in one horizontal or vertical line. And a correction step for correcting the image data to be processed. A program for causing a computer to execute the image processing method according to claim 11.