Calibration Method and Calibration System for Projection Apparatus
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Abstract
The invention relates to a calibration method and a calibration system for at least one projection apparatus for projecting images onto at least one projection area, where the geometric data from the at least one projection area has been or are stored in advance in a computer unit, wherein a) the at least one projection apparatus projects previously known calibration patterns onto at least one portion of the projection area, with the calibration patterns having at least one overlap region among one another, b) the calibration patterns are recorded by at least one camera apparatus as a calibration image and the data from the calibration image are transmitted to the computer unit, where c) the computer unit is used to automatically ascertain the difference between the recorded real calibration image and an ideal depiction result from the previously known calibration pattern on the projection area as a reference pattern, and where subsequently the difference between the real calibration image and the reference pattern is used to ascertain a correction transform, so that the link between the correction transform and a real projection of images by the at least one projection apparatus corresponds to the reference pattern particularly in an overlap region apart from a small, particularly a minimum, difference.
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Citations
38 Claims
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1-19. -19. (canceled)
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20. A calibration method for at least one projection apparatus for projecting images onto at least one projection area, the geometric data of the at least one projection area having been or being stored in advance in a computer unit, wherein
a) the at least one projection apparatus projects previously known calibration patterns onto at least a portion of the projection area, b) the calibration patterns are recorded by at least one camera apparatus as a calibration image, and the data of the calibration image are transmitted to the computer unit, c) the deviation between the recorded real calibration image and an ideal imaging result of the previously known calibration pattern on the projection area is automatically determined as a reference pattern by means of the computer unit, and wherein subsequently, d) the computer unit determines a correction transform from the deviation between real calibration image and the reference pattern so that the link between the correction transform and a real projection of images by the at least one projection apparatus corresponds, particularly in an overlap region, with the reference pattern apart from a small, in particular minimum, deviation.
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38. :
- A calibration system comprising;
a) having at least one projection apparatus for projecting images onto at least one projection area, the geometric data of the at least one projection area having been or being stored in advance in a computer unit, with at least one projection apparatus projecting previously known calibration patterns onto at least a portion of the projection area; b) at least one camera apparatus for recording the calibration patterns as a calibration image it being possible to transmit the data of the calibration image to the computer unit; and c) with the computer unit automatically determining the deviation between the recorded real calibration image and an ideal imaging result of the previously known calibration pattern on the projection area as a reference pattern; and d) a correction means for determining a correction transform from the deviation between real calibration image and the reference pattern so that the link between the correction transform and a real projection of images by the at least one projection apparatus corresponds, particularly in an overlap region, with the reference pattern apart from a small, in particular minimum, deviation.
- A calibration system comprising;
Specification