Path: csiph.com!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Chris Newman Newsgroups: comp.sys.acorn.misc Subject: Re: Sprite files Date: Thu, 27 Feb 2025 22:17:37 +0000 (GMT) Organization: None Lines: 47 Message-ID: <5bf5f2ac6enewslists@npost.uk> References: <5bf32b2585newslists@npost.uk> <5bf3a4da5fnewslists@npost.uk> <5bf3aa4d8bdave@triffid.co.uk> <5bf3b9342anewsmcc@blueyonder.co.uk> <5bf41b6693dave@triffid.co.uk> <5bf5356db2dave@triffid.co.uk> <5bf5501d72newslists@npost.uk> <93f055f55b.harriet@bazleyfamily.co.uk> Injection-Date: Thu, 27 Feb 2025 23:17:51 +0100 (CET) Injection-Info: dont-email.me; posting-host="cae8a4c79809017283ff4ab8a82935a6"; logging-data="3473616"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19a6BYFwxQNLNp5I2/vAXTWxMUaGsvBN+E=" User-Agent: Pluto/3.20 (RISC OS/5.29) NewsHound/v1.54 Cancel-Lock: sha1:RnS1Ho9qSFAw/EnRfKdZgAgeJSI= Xref: csiph.com comp.sys.acorn.misc:21595 In article , Harriet Bazley wrote: > On 26 Feb 2025 as I do recall, Harriet Bazley wrote: > > On 26 Feb 2025 as I do recall, Chris Newman wrote: > > > > [snip] > > > > > > > I have a file which consists of many, many PDF pages. They contain > > > the words to approx 2075 jazz tunes. I wanted one so I used > > > !Snapper to tack a screen shot. I also tried outputting a whole > > > page fro !PDF then cropping what I didn't need. Also tried the same > > > from MuView. 'Twould seem Sleuth doesn't want to lay with sprites > > > taken like this. It seems > > > > > > > OCR won't work with sprites at screen resolution (which is only about > > 90x90dpi). > > > However, depending on how the PDF file was created, i.e. (whether it > holds the actual text or whether it is just somebody's wrapper for a > collection of fuzzy JPEGS) it might be possible to get the page output > at a much higher resolution - you can fake this in !PDF by zooming the > view to, say, 400% and then using the Save as Sprite option. It still > won't be in monochrome, so you will have to tick the monochrome > 2-colour option in ChangeFSI and resave as a Mode 25 sprite. The original book was printed from a home computer. That has then been taken apart re runthrough an automatic feed sacanner to produce a file of 397 PDF pages (171Mb). Each page has several songs distributed over two columns. By uing !PDF and zooming the view up mightinly I was able to take a screen shot of just he song I wanted. Running that through ChngeFSI at monochrome resulted in a block of black instead of text unless I set the output to 256 colours. Then Sleuth3 worked. The output wasn't brilliant due to the imitations of te original. I couldn't find a way of sending a single page to CView and running the whole thing caused GView to stop with a window of multiple error messages. -- Chris