Patent ID: 9066072
Filing Date: 2015-06-23
Classification: H01L,H04N

Abstract:
1. A method for calibrating a production unit of an image sensor, comprising: generating data based at least in part on one or more reference pixels of a pixel array of the production unit, wherein the reference pixels have minimal color filtration; and adjusting for production variations of a color filter array associated with one or more color pixels of the pixel array of the production unit using the data, wherein the generating data comprises generating a set of color ratios based at least in part on the one or more color pixels and calculating a gain map representative of variations of the color filter array, wherein the gain map includes a set of production color ratios relating the one or more color pixels to the reference pixels, said color ratios of the gain map of the form: where X1prod, X2prod . . . XNprod, and Cprod correspond to production sensor responses of the one or more color pixels of the production unit of the image sensor, and the reference pixel, respectively.