Patent Number: 
Section: claims

1. A method for reducing defects in an image captured by a camera, the defects caused by a flat panel screen of a display, comprising:providing a partially transparent display pixel during a time period when the camera is exposed;estimating an average transparency of the partially transparent display pixel;calculating values, as a function of the average transparency, for insertion in an occlusion map;inserting the values in the occlusion map; andestimating a corrected image using the occlusion map and the image captured by the camera,wherein estimating the corrected image comprises numerically dividing one or more pixel values of the image captured by the camera by the values inserted in the occlusion map. 2. The method of claim 1, further comprising recording an effect of a single display pixel on the occlusion map by making the single display pixel opaque and making all other display pixels transparent. 3. The method of claim 1, wherein a relationship between the occlusion map and occluding pixels is a linear relationship. 4. The method of claim 3, wherein the relationship between the occlusion map and occluding pixels is a shift invariant relationship. 5. The method of claim 1, wherein calculating values for insertion in the occlusion map comprises calculating a composite occlusion map by adding an occlusion map due to statically opaque elements and an occlusion map due to occluding pixels. 6. The method of claim 5, wherein the occlusion map due to statically opaque elements is experimentally estimated by presenting the camera with a flat intensity of light and keeping all display pixels transparent. 7. The method of claim 1, further comprising removing a defect caused due to a slight dispersion of light rays before the image is captured by the camera. 8. The method of claim 7, wherein removing the defect is done using deconvolution. 9. The method of claim 7, wherein removing the defect is done using linear system inversion. 10. The method of claim 7, wherein removing the defect is done by subtracting a single uniform value from each display pixel, where the single uniform value is approximated from a total dispersed light. 11. The method of claim 1, further comprising removing a defect caused due to a dispersion of light from a backlight. 12. The method of claim 11, removing of defect is done by subtracting a value that is estimated as a function of a time overlap between a display phase and a capture phase.