A system and method for capturing and transposing vertically scanned documents in an imaging system uses a paged buffer memory, such as DDR SDRAM. Images are captured in the paged buffer memory by writing the images into memory cells in a series of columns, and images are transposed by reading the images from the memory cells in a series of rows. During transposition, the memory cells are partitioned into a plurality of column groups so that a plurality of consecutive pixels of a digitized image can be written on the same memory page. The image is read from the buffer memory in a series of rows arranged in a plurality of groups of consecutive pixels so that a plurality of consecutive pixels can be read from the same memory page.