METHOD AND APPARATUS FOR ROTATING OR TRANSPOSING A BINARY IMAGE

A method which may be implemented in a library routine for performing an image transformation. First, a plurality of groups of bits are selected, with each group being from a different row and the rows being aligned in the same column in an image. Next, a logical operation is performed to set to zero all of the bits in the group except for the designated position of the column to be transformed. Finally, each of the groups or rows are compared to a template, and a single bit indicating the result of such comparison is stored in a result register.