Color correction method and device for projector
AssigneeNEC Corporation
InventorMasato Tsukada
Life of this patent
Estimating the term…
Abstract
A white image is projected on a projection surface with a projector and color information of the white image is captured by a color sensor 11. A color transformation providing color appearance matching is generated based on color space of an input image and color space on the projection surface, and is stored in a memory. The color of the input image is subjected to color correction using the color transformation. After subjected to gamma correction if necessary, the color-corrected image is output to the projector.
Claims24
A color correction method for a projector, comprising the steps of:
- a) projecting at least one image onto a projection surface;
- b) capturing color information of said at least one projected image on the projection surface;
- c) generating color transformation providing color appearance matching based on color information of an input image and the color information of said at least one projected image;
- and
- d) transforming color of the input image according to the color transformation to produce a corrected-color image to be outputted to the projector.
A color correction method for a projector, comprising the steps of:
- a) projecting at least one image onto a projection surface;
- b) capturing color information of said at least one projected image on the projection surface;
- c) generating a color space on the projection surface from the color information of said at least one projected image;
- d) generating color transformation providing color appearance matching based on an input-side color space and the color space on the projection surface;
- and
- e) transforming color of an input image according to the color transformation to produce a corrected-color image to be outputted to the projector.
A color correction method for a projector, comprising the steps of:
- detecting at least white information on a color space on a projection surface;
- generating color transformation providing color appearance matching based on white information on a color space of an input image and the white information on the projection surface;
- and
- transforming color of the input image according to the color transformation to produce a corrected-color image.
A color correction device for a projector, comprising:
- a color information generator for generating color information of at least one projected image on a projection surface by inputting at least one part of said at least one projected image;
- a color transformation generator for generating color transformation providing color appearance matching based on color information of an input image and the color information of said at least one projected image;
- and
- a color transformation section for transforming color of the input image according to the color transformation to produce a corrected-color image to be outputted to the projector.
A color correction device for a projector, comprising:
- a color information generator for generating color information of at least one projected image on a projection surface by inputting at least one part of said at least one projected image;
- a color space generator for generating a color space on the projection surface from the color information of said at least one projected image;
- a color transformation generator for generating color transformation providing color appearance matching based on an input-side color space and the color space on the projection surface;
- and
- a color transformation section for transforming color of the input image according to the color transformation to produce a corrected-color image to be outputted to the projector.
A program instructing a computer to perform color correction of a projector, the program comprising the steps of:
- a) projecting at least one image onto a projection surface;
- b) capturing color information of said at least one projected image on the projection surface;
- c) generating color transformation providing color appearance matching based on color information of an input image and the color information of said at least one projected image on the projection surface;
- and
- d) transforming color of the input image according to the color transformation to produce a corrected-color image to be outputted to the projector.
A program instructing a computer to perform color correction of a projector, the program comprising the steps of:
- a) projecting at least one image onto a projection surface;
- b) capturing color information of said at least one projected image on the projection surface;
- c) generating a color space on the projection surface from the color information of said at least one projected image;
- d) generating color transformation providing color appearance matching based on an input-side color space and the color space on the projection surface;
- and
- e) transforming color of an input image according to the color transformation to produce a corrected-color image to be outputted to the projector.
Dependencies are inferred from the claim text.