canvas 2d context
Encrypted Media Extensions
HTML 5 spec
HTML 5: The Markup Language
HTML WG website
HTML5 differences from HTML4
HTML5 Spec - PR Blockers
Media Source Extensions
pre-LC1 alt techniques
pre-LC1 authoring guide
pre-LC1 HTML 5 spec
Erika Doyle Navara
Philippe Le Hégaret
Joshue O Connor
includes: "User agents may also apply image analysis heuristics to help the user make sense of the image when the user is unable to make direct use of the image,
e.g. due to a visual disability or because they are using a text terminal with no graphics capabilities."
Despite all evidence to the contrary, this suggests that image heuristics algorithms could be used to recover from images with missing @alt. The technology doesn't exist. At all. Not even close. Perhaps it might some day in the distant future, but in such case we won't need the HTML5 spec to tell UA developers to use it. User agents may also use telepathy, social networking, captcha algorithms and altText@home to help the user make sense of the image, but those (currently non-existent) technologies are also not mentioned.
This text should be stricken, because it gives the message that this is viable now. It's not.
Change Proposal: Remove Image Heuristics Paragraph from img Element Section
Add notes (no markup allowed, URIs get automatically hyperlinked):
Moved to OPEN because we now have a Change Proposal.
[paulc]: there are 2 counter proposals which means we have a total of 3 proposals.
ISSUE-66: Straw Poll for Objections
[MikeSmith]: MikeSmith raised HTML a11y TF action 46, to work with WAI UAWG to find home for "image analysis heuristics" text - http://www.w3.org/WAI/PF/HTML/track/actions/46
Working Group Decision on ISSUE-66 - Image Analysis Heuristics
Bug 9835: Remove image analysis Reported by Sam Ruby, June 2, 2010.
"Remove 'User agents may also apply heuristics to help the user make use of the image when the user is unable to see it, e.g. due to a visual disability or because they are using a text terminal with no graphics capabilities. Such heuristics could include, for instance, optical character recognition (OCR) of text found within the image.'"