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- Path: sparky!uunet!pipex!warwick!uknet!root44!praxis!tjh
- From: tjh@praxis.co.uk (Tim Huckvale)
- Newsgroups: comp.sys.acorn.tech
- Subject: Review: HCCS Colour Vision Digitiser
- Summary: Magnus reviews a popular video digitiser
- Keywords: Review HCCS video digitiser
- Message-ID: <1992Dec22.094211.27240@praxis.co.uk>
- Date: 22 Dec 92 09:42:11 GMT
- Organization: Praxis, Bath, U.K.
- Lines: 44
-
-
- The HCCS Vision Digitiser produces pictures the same quality as most
- digitised pictures I have seen. The only problem I have come across is
- horizontal 'lines' across colour pictures. I think these lines have had
- their Red, Green, and Blue components swopped around. Normally you can use
- !Paint to touch the image up by replacing these lines by copies of their
- neighbours. Gsrabbing the frame again sometimes lessens this effect.
- The only positive thing to be said about the software is that it works.
- I appreciate that better software would be more expensive but I wouldn't
- mind paying more money for better software. Each picture can be processed
- in monochrome or 2 levels of colour quality. In mode 15 the two colour
- options are indistinguishable but I suspect the difference can be seen in
- mode 21. Monochrome pictures are processed then shown, with colour
- pictures you can see the picture build up line by line. While the picture
- is processing you can alter the brightness, contrast, and saturation values
- - normally with the effect of making the picture look worse. There is no
- way to change Red, Green, and Blue levels, most of my pictures seem to look
- too yellow - too much Red and Green.
- Pictures can be saved as a sprite or as a sprite, there is no facility
- for saving un-processed pictures to be processed later, and only one frame
- can be stored at a time - the only reason I mention this is that I would
- like to be able to produce short animations. The size of each sprite is
- always chosen by the program (720 x 254 in mode 15, presumably 720 x 508 in
- mode 21) and can only be grabbed in modes 15,21, or 28. I needed 128 x 128
- mode 13 sprites (For use in my 'demo' - The Colour of Risc - watch your PD
- library) so I put the desktop in mode 13 and used !Paint to scale and
- 'Screenshot' the sprites.
- Documentation is not wonderful - a sheet showing how to install the thing
- and a 10k 'edit' file. The podule itself is well put together, the A3000
- external one looks like an archimedies podule in a (cheap) box. I only
- call the box cheap because it has too many gaps and overlaps for my liking;
- but considering that hard drive boxes cost nearly ten times as much, it is
- good value for money. On the circuit board are sockets for expansion chips
- - presumably for 'HiVision' specification.
- Having said all that, I don't regret buying the HCCS vision digitiser as
- more expensive digitisers are out of my budget. The pictures are of high
- enough quality for my requirements and I'm quite happy with it.
-
- --
- Magnus Huckvale
-
- Posted by:
- --
- Tim H
-