Method And Apparatus For Integral Image Computation Instructions

摘要

A method is described that performing an image integral calculation by creating a second vector and creating a third vector. The second vector is created by executing a first instruction that adds alternating elements of a first vector to respective neighboring elements of the first vector and presents resulting summations into said second vector. The first instruction also passes through the respective neighboring elements to said second vector. The third vector is created by executing a second instruction that adds elements of one side of the second vector to an element of another side of the second vector and passes through the another side of the second vector.

主权项

1. An apparatus, comprising:
an instruction execution pipeline having a functional unit, said functional unit comprising the following to support a first instruction and a second instruction: adder bank circuitry to respectively add alternating first input vector elements to respective neighboring elements of said first input vector in support of said first instruction, and, respectively add elements of one side of a second input vector to an element of another side of said second input vector in support of said second instruction; and, pass through selection circuitry to select said respective neighboring elements for pass through to said first instruction's resultant, and, to select elements of said another side of said input vector for pass through to said second instruction's resultant.