Patent ID: 8531542

Claim:
An image signal processing system comprising: a front-end pixel processing unit configured to receive a frame of raw image data comprising pixels acquired using a digital image sensor, wherein the front-end pixel processing unit comprises statistics collection logic configured to collect statistics based upon the raw frame pixel data, wherein the collected statistics comprises at least one of auto-white balance statistics, auto-exposure statistics, auto-focus statistics, and flicker detection statistics, wherein the collection of the statistics occurs prior to the raw frame being processed by an image signal processing pipeline coupled downstream of the front-end pixel processing unit, and wherein the statistics collection logic comprises: an input configured to receive the raw frame pixels; color space conversion logic configured to convert the raw frame pixel data into multiple sets of converted pixel data, each of the converted pixel data sets being in a different color space; and a set of pixel filters, each being configured to receive the raw frame pixel data and the multiple sets of converted pixel data, to select one set of either the raw frame pixel data or the converted pixel data, and to determine one or more accumulated color sum values by analyzing the selected set of pixel data.