Device, system and method for photometric compensation of images provided by a display device

Abstract

A device, system and method for photometric compensation of images provided by a display device. A display device is controlled to provide colors, the display device configured to provide images according to the colors of the display device. A camera acquires respective images of the colors provided by the display device. A per-pixel correction function for modifying image data used by the display device to provide the images is determined based on: the respective images of each of the colors acquired by the camera corrected into the HVS model using a predetermined color-relationship between the camera and a Human Visual System (HVS) model for the colors of the display device. The display device is controlled to provide the images using the image data as corrected using the per-pixel correction function.

What is claimed is: 
     
         1 . A device comprising:
 a controller in communication with:
 a display device configured to provide images according to colors of the display device; and 
 a camera arranged to detect one or more of the images and the colors provided by the display device; and 
 a memory storing: a predetermined color-relationship between the camera and a human visual system (HVS) model for the colors of the display device, 
   the controller configured to:
 control the display device to provide the colors; 
 control the camera to acquire respective images of the colors provided by the display device; 
 determine a per-pixel correction function for modifying image data used by the display device to provide the images, based on:
 the respective images of each of the colors acquired by the camera corrected into the HVS model using the predetermined color-relationship between the camera and the HVS model for the colors of the display device; and 
 
 control the display device to provide the images using the image data as corrected using the per-pixel correction function. 
   
     
     
         2 . The device of  claim 1 , wherein the display device comprises a projector configured to project the colors and project the images, and the camera and the projector have a common field of view. 
     
     
         3 . The device of  claim 2 , wherein the projector is configured to project onto a non-white surface located in the common field of view. 
     
     
         4 . The device of  claim 2 , wherein the projector is set to a target white point prior to projecting the colors in a determination of the per-pixel correction function. 
     
     
         5 . The device of  claim 2 , wherein the controller is further configured to: control the projector to project the colors in association with using structured light to determine a geometry-relationship between the projector and camera. 
     
     
         6 . The device of  claim 2 , wherein projector comprises a 1-chip projector, and the controller is further configured to apply one or more of a look-up table (LUT) and a mathematical function to linearize images when controlling the projector to project the images using the image data as corrected using the per-pixel correction function. 
     
     
         7 . The device of  claim 1 , wherein the display device comprises one or more of a flat panel display, a light emitting diode display and a liquid crystal display. 
     
     
         8 . The device of  claim 1 , wherein the colors comprise one or more of: primary colors; and red, green and blue. 
     
     
         9 . The device of  claim 1 , wherein the per-pixel correction function includes an ambient light correction factor. 
     
     
         10 . The device of  claim 1 , wherein the HVS model comprises a 1931 CIE (International Commission on Illumination) color space model. 
     
     
         11 . A method comprising:
 controlling, using a controller, a display device to provide colors, the display device configured to provide images according to the colors of the display device;   controlling, using the controller, a camera to acquire respective images of the colors provided by the display device;   determining, using the controller, a per-pixel correction function for modifying image data used by the display device to provide the images, based on:
 the respective images of each of the colors acquired by the camera corrected into the HVS model using a predetermined color-relationship between the camera and a Human Visual System (HVS) model for the colors of the display device, the controller in communication with a memory storing the predetermined color-relationship; and 
   controlling, using the controller, the display device to provide the images using the image data as corrected using the per-pixel correction function.   
     
     
         12 . The method of  claim 11 , wherein the display device comprises a projector configured to project the colors and project the images, and the camera and the projector have a common field of view. 
     
     
         13 . The method of  claim 12 , wherein the projector is configured to project onto a non-white surface located in the common field of view. 
     
     
         14 . The method of  claim 12 , wherein the projector is set to a target white point prior to projecting the colors in a determination of the per-pixel correction function. 
     
     
         15 . The method of  claim 12 , further comprising: controlling, using the controller, the projector to project the colors in association with using structured light to determine a geometry-relationship between the projector and camera. 
     
     
         16 . The method of  claim 12 , wherein projector comprises a 1-chip projector, and the method further comprises applying one or more of a look-up table (LUT) and a mathematical function to linearize images when controlling the projector to project the images using the image data as corrected using the per-pixel correction function. 
     
     
         17 . The method of  claim 11 , wherein the display device comprises one or more of a flat panel display, a light emitting diode display and a liquid crystal display. 
     
     
         18 . The method of  claim 11 , wherein the colors comprise one or more of: primary colors; and red, green and blue. 
     
     
         19 . The method of  claim 11 , wherein the per-pixel correction function includes an ambient light correction factor. 
     
     
         20 . The method of  claim 11 , wherein the HVS model comprises a 1931 CIE (International Commission on Illumination) color space model.