Patent ID: 8564688

Claim:
A method of processing a plurality of pixel signals corresponding to an image using an image processor circuit in an imager, the method comprising: with the image processor circuit, capturing a first frame of an image; with the image processor circuit, modifying the pixels signals of the first frame of the image by applying a calibration matrix to each pixel signal of the first frame of the image, wherein the calibration matrix is determined during imager calibration during manufacturing of the imager, and wherein the calibration matrix is configured to correct for fixed characteristics of the image processor circuit that are independent of illumination conditions; with the image processor circuit, determining automatic white balancing statistics for the first frame of the image based on the pixel signals to which the calibration matrix has been applied; with the image processor circuit, capturing a next frame of an image; and with the image processor circuit, adjusting each pixel signal of the next frame of the image by performing automatic white balancing using the determined automatic white balance statistics for the first frame of the image.