milo@ndmath.UUCP (02/16/87)
Would anybody out there happen to have a program that displays shaded halftone output on a Sun-2 workstation display? My data file is of the following format 1. A single line of text specifying resolution (ie: 420,320) followed by a newline. 2. All the bytes of the image, in row order. 8 bits (256 grey levels) per pixel. I would like a program that would generate a halftone from this image and display it on a Sun-2 monochrome display (1 bit). The quality of the image is not important...I need it to preview images before spending all the time to send them to a postscript printer for high quality output. Thanks Greg Corson ...seismo!iuvax!ndmath!milo
majka@ubc-vision.UUCP (02/17/87)
I've got just the thing for you. It's called sunview, and I'll post it to net.sources. It was written to run under a "gfx" window in suntools on a sun 3, but I think it will work on a sun 2 as well. It reads a local image file format, which is a file with a header containing number of row and cols, then the data in row major order. You shouldn't have much trouble converting to you own format. It does halftoning using a "modulation" technique. --- Marc Majka - UBC Laboratory for Computational Vision
kwok@calgary.UUCP (02/18/87)
In article <186@ndmath.UUCP>, milo@ndmath.UUCP (Greg Corson) writes: > Would anybody out there happen to have a program that displays shaded halftone > output on a Sun-2 workstation display? My data file is of the following format > 1. A single line of text specifying resolution (ie: 420,320) followed by a > newline. > 2. All the bytes of the image, in row order. 8 bits (256 grey levels) per > pixel. > > I would like a program that would generate a halftone from this image and > display it on a Sun-2 monochrome display (1 bit). The quality of the image is > not important...I need it to preview images before spending all the time to > send them to a postscript printer for high quality output. > We have developed an algorithm for magnifying/reducing greyscale images and display/print them in halftone, at any size that you desire. The current implementation is on an Apollo 3000. The conversion time is typically 3 minutes from an original at 256x256x8 to a target at 1280x1024x1. Regards Paul Kwok, Univ of Calgary ph (403)220-3531