- From: <David.Pawson@rnib.org.uk>
- Date: Tue, 20 Apr 2004 08:34:48 +0100
- To: david@djwhome.demon.co.uk, w3c-wai-ig@w3.org
Re SVG In theory it can do better, and when I've challenged the likely total lack of sensible reading order in the past, the SVG lobby have pointed to their accessibility paper. Nice one liner isn't it. However even PDF can also do a lot better than the typical PDF you see. Typical PDF has nearly every character individually placed and no space characters, but the design of PDF doesn't require that, it is the PostScript print drivers and word processors that cause the problem. You wouldn't say that if you had to extract about 50K of text out of PDF per day :-) It is actually an explicit design aim of PDF that it be possible to extract the underlying plain text. If there is any. We've received a manual in which the entire document is in images. I.e. no text at all. > in the quality of the image when zoomed, making it good for a group of > low vision users. Unlike bitmapped images it doesn't lose quality when zoomed. I'd question this, at least for large magnifications, as people with good sight will be seeing pixellated image at their normal viewing scales. Feel free to question it. The comparison I'd quote is a png or gif or tiff image zoomed 20 times compared to SVG. Being vector its simply re-drawn. Non-integer magnifications might be a problem. I don't understand that phrase. regards DaveP. - DISCLAIMER: NOTICE: The information contained in this email and any attachments is confidential and may be privileged. If you are not the intended recipient you should not use, disclose, distribute or copy any of the content of it or of any attachment; you are requested to notify the sender immediately of your receipt of the email and then to delete it and any attachments from your system. RNIB endeavours to ensure that emails and any attachments generated by its staff are free from viruses or other contaminants. However, it cannot accept any responsibility for any such which are transmitted. We therefore recommend you scan all attachments. Please note that the statements and views expressed in this email and any attachments are those of the author and do not necessarily represent those of RNIB. RNIB Registered Charity Number: 226227 Website: http://www.rnib.org.uk
Received on Tuesday, 20 April 2004 03:35:46 UTC