Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!celia!neil From: neil@celia.UUCP (Neil Richmond) Newsgroups: comp.sys.amiga.graphics Subject: Re: DCTV Message-ID: <997@celia.UUCP> Date: 22 Apr 91 14:55:14 GMT References: Reply-To: celia!neil@usc.edu (Neil Richmond) Organization: Rhythm & Hues, Inc., Hollywood Lines: 48 In article patrick_meloy@outbound.wimsey.bc.ca (Patrick Meloy) writes: >What does having a 'TRUE' 24 bit image have to do with floodfills? If DCTV >didn't have true 24 bit then I shouldn't be able to toss Toaster pics back >and forth between it and DCTV without loss of image quality. Even if I save >off the 700k+ toaster file as a DCTV Display file (300k), then reload the >300k file and save as 24bit IFF, I get the same crisp clear image on the >toaster that I had originally. Whoa My OverZealous Friend! To begin with DCTV is not true 24 bit display. Anything using NTSC as a final output is not 24 bit. DCTV is a very clever encoding scheme toward producing 24 bit graphics. What concerned me, was, how they were going to turn a composite NTSC signal into RGB. It is easy to make a good signal bad, but it is not easy to make a bad signal look good. You aren't going to sell me on NTSC. I have worked with it too long to have any respect for it. It is a necessary EVIL. My complaint about floodfills is another issue. There are many different fill algorithms. You can fill an antialiased bounded shape very successfully. I have written such a routine many years ago. It was based on a Siggraph paper about as old. Why did they chose to use the stencil to contain the filling algorithm? Their stencil is only 1 bit! This makes for some ugly looking filled areas. Whovever said I couldn't learn a paint program in two days knows very little about my experience. I wouldn't underestimate yours. Everytime I get on the program I learn more about its limitations. It is about as good as DPaint III, only more bits of color resolution. I was hoping for more out of the paint program. Initially, my use is not to use rendered images, but to use the paint program to do higher quality animations than I can turn out with DPaint. The fill routines are essential to what I am trying to do. Thus my lament. Hope- fully, their next version of the software will be better. Hopefully, what I fear about the hardware is unfounded. If it is, I will have to try a Fire- Cracker. What I want to know is how come there is a 24 bit RGB board for the Mac for under $500 and the firecracker is $1400? neil >--------------------------------------- >| patrick_meloy@outbound.wimsey.bc.ca | >| 'The Outbound' BBS Vancouver BC | >--------------------------------------- -- Only 3176 shopping days left till the next millenium! Neil F. Richmond INTERNET: celia!neil@usc.edu Rhythm & Hues Inc. UUCP: ...{ames,hplabs}!lll-tis!celia!neil)