Projection apparatus, projection control apparatus, projection system, and projection state adjustment method
AssigneeCasio Computer Co., Ltd.
InventorYoshihiko SHINOZAKI
Life of this patent
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Abstract
Considered is a case where an adjustment chart is projected larger than a screen that is a projection target and an outer frame is not projected on the screen. The position of a top side of the outer frame can be easily identified from an interval between intersections of a top side of the screen and sides of a rhombus. Similarly, the position of a right side of the outer frame can be easily identified from another interval, and a bottom side of the outer frame from still another interval.
Claims30
A projection apparatus comprising:
- an image projection unit configured to project an image onto a projection target;
- an adjustment chart projection unit configured to project an adjustment chart indicating a projectable area;
- and
- an identification unit configured to identify a contour of the projectable area based on a part of the adjustment chart projected by the adjustment chart projection unit.
A projection control apparatus comprising:
- an image projection control unit configured to control a plurality of projection apparatuses to project images onto a projection target;
- an adjustment chart projection unit configured to project an adjustment chart indicating a projectable area;
- and
- an identification unit configured to identify a contour of the projectable area based on a part of the adjustment chart projected by the adjustment chart projection unit.
A projection state adjustment method for adjusting a projection area on a projection target in a projection apparatus for projecting an image onto the projection target, the method comprising the processing of:
- adjusting horizontality or verticality of the projection apparatus with respect to the projection target, and adjusting a reference angle of an angle of view of the projection area;
- rotating an orientation of the projection apparatus in a horizontal direction or a vertical direction, and making a top side and a bottom side of the projection area horizontal with respect to the projection target or making a left side and a right side of the projection area vertical with respect to the projection target;
- moving the projection apparatus in the horizontal direction or the vertical direction, and adjusting a position in the horizontal or vertical direction of the projection area with respect to the projection target;
- rotating the orientation of the projection apparatus in the vertical direction or the horizontal direction, and adjusting the position in the vertical or horizontal direction of the projection area with respect to the projection target;
- and
- adjusting an optical system of the projection apparatus, and changing a size of the projection area:
A projection apparatus comprising:
- an image projection unit configured to project an image onto a projection target;
- a chart generation unit configured to generate an adjustment chart including a line representing a diagonal of an image area;
- an image capturing unit configured to capture the projection target on which the adjustment chart generated by the chart generation unit has been projected, and to acquire the captured image;
- a parameter determination unit configured to determine a correction parameter based on a position of an intersection of the projected diagonal and an outer frame of the projection target in the captured image;
- and
- an image conversion unit configured to perform a geometric correction on an original image to be projected based on the correction parameter determined by the parameter determination unit.
A projection control apparatus comprising:
- an image projection control unit configured to control a plurality of projection apparatuses to project an image onto a projection target;
- a chart generation unit configured to generate an adjustment chart including a line representing a diagonal of an image area;
- a captured image acquisition unit configured to acquire a captured image of the projection target on which the adjustment chart generated by the chart generation unit has been projected by each of the plurality of projection apparatuses;
- a parameter determination unit configured to determine a correction parameter based on each captured image acquired by the captured image acquisition unit;
- and
- an image conversion unit configured to perform a geometric correction on an original image projected by each of the plurality of projection apparatuses based on the correction parameter determined by the parameter determination unit.
A projection state adjustment method to be used by a projection apparatus for projecting an image onto a projection target, the method comprising the processing of:
- projecting an adjustment chart including a line representing a diagonal of an image area;
- capturing the projection target on which the adjustment chart has been projected and acquiring the captured image;
- determining, based on the captured image, a correction parameter based on a position of an intersection of the projected diagonal and an outer frame of the projection target;
- and
- performing a geometric correction on an original image to be projected, based on the determined correction parameter.
Dependencies are inferred from the claim text.