we're seeing 640x480...good.
no errors, but output img looks goofy ... is recognizable, but striped and odd aspect ratio. I think I might have height and width reverse; perhaps OpenCV wants matlab-style col-major order
segfault when col major
YES! that worked. IPP wants row-major, OpenCV wants col-major. Did this, and got a good-looking output img downsampled. Tomorrow: test the perf for pyramid style downsampling.
cleanup old tests
formatting