Message-Id: <199801291957.MAA56214@dns.ccit.arizona.edu> Date: Thu, 29 Jan 1998 14:49:23 EST From: Joel Wolfson <mailto:DigiWolf@AOL.COM> Subject: B/W halftones To: mailto:IMAGELIB@LISTSERV.ARIZONA.EDU
>We have many technological options for writing the data, but right now
>the easiest and most reliable way to write data is in black and white,
>as opposed to grayscales. Currently, that limits us to text, but I
>would like to do some experiments writing photographs as half-tones.
>I'd like to know if anybody has suggestions as to how I can accurately
>convert a grayscale photograph to halftone. For example, I tried
>changing the attributes in the Paint program to black and white, but got
>very unsatisfactory results. Is there a program that does this
>conversion, with user options? How do, for example, newspapers do this
>conversion?
Yes, PhotoShop allows for halftone conversions. You can even set the frequency, screen angle, and dot shape.
Hope this helps.
Optidigitally Yours,
Joel Wolfson Calumet Digital Solutions E-mail: mailto:digiwolf@calumetdigital.com or mailto:digiwolf@infomagic.com