Patent Document ID: 20130243329
Application ID: 13421298
Patent Flag: 0

Claim One:
1. A method for detecting variable sized objects in an image using a computer system with an array of cores configured to concurrently execute a plurality of threads, wherein each core comprises a shared memory, a constant memory and a plurality of functional units, the method comprising the following steps: calculating a summed area table from an image, by executing a plurality of exclusive prefix sum kernel functions and at least two transposition kernel functions, decomposing the summed area table into a plurality of table chunks, creating a thread per element of the table chunk and storing each table chunk in the shared memory of a core, evaluating a plurality of classifiers for a plurality of table chunks by executing a cascade evaluation kernel function to determine whether an object is enclosed within the table chunk, wherein each kernel function is assigned to a plurality of block threads, a block thread being executed in a single core and having access to the shared memory of the core, each thread of the thread block comprising Single Instruction Multiple Data (SIMD) instructions to be processed in a plurality of functional units of the core.