Author: Peter Lemkin and Bruce Shapiro

Image Processing Unit, National Cancer Institute, National

Institutes of Health, Bethesda, MD

Operating System: OS/8 V3

Source Language: FORTRAN II/SABR

Memory Required: 32K

Special Hardware Required: EAE required. (Line printer, scanner,

display optional.)

Abstract: "PROCES" is a stand-alone PDP-8E program running on

the Image Processing Unit's (IPU) "Real Time Picture Processor"

(RTPP) which is used to process 256 X 256 raster scan picture files. It can

display a 256 X 256 raster on a Dicomed Display with 64 levels of gray,

print subpictures (up to 72 X 72) on a teletype or lineprinter, output a

processed picture into a picture file, average it, take its laplacian or

gradient, and perform picture operations (max,min,+,-,*,/) on two

gray scale pictures. In addition, PROCES can find a boundary, mask an

image with the boundary, generate a gray scale histogram display or

printout, and find the maxima/minima of the gray scale histogram. The

IPU uses digitized images of microscopic fields acquired via a galvanom-

eter scanner, but any properly formatted Digital array may serve as

"pictures."

Media Price Code: A3, H32

Format: OS/8

Catalog: August 1978