Image sensor with auto-focus and pixel cross-talk compensation

摘要

A system and method for producing a digital image. The method may compensate for cross-talk between adjacent pixels and reduce the effect of auto-focus elements integrated into a pixel array of an image sensor. A set of coefficients is obtained, where the set of coefficients represent a relative measurement between two or more pixels in the pixel array and may be obtained from a calibration operation. A predictive function is constructed based on the set of coefficients. A compensated pixel value for at least one pixel of the image sensor is calculated using the predictive function. A digital image is created based in part on the compensated value.

主权项

1. A computer-implemented method for producing a digital image using an image sensor comprised of a pixel array, the method comprising:
obtaining, using a processor, a set of coefficients representing a relative measurement between:
an affected pixel that is proximate to an auto-focus pixel having a shield element and is optically affected by the shielding element,and an unaffected pixel that is at least one additional pixel away from the auto-focus pixel as compared to the affected pixel; constructing, using the processor, a predictive function based on the set of coefficients wherein the predictive function is constructed by performing a non-linear regression on at least part of the set of coefficients; computing, using the processor, a compensated pixel value for at least one pixel of the image sensor using the predictive function; and creating a digital image, using the image sensor, based in part on the compensated value.