W3C

- DRAFT -

Low Vision Accessibility Task Force Teleconference

10 Oct 2019

Attendees

Present
Jim, Shawn, Denise, Jeanne, Wayne, Andy_Somers, Laura
Regrets
Jon, Avila
Chair
jim
Scribe
JimA_

Contents


point of regard: https://docs.google.com/document/d/1D1AczVDgSCgCci4t3sO-QV6VKaKIEyQ6zKgm0ocnFB8/edit#

text spacing: https://docs.google.com/document/d/1efjXi8fw9uxCKygQ3JZD4PAMtSCFMaH83hX3Yae8jd4/edit#

zakim: open item 1

Review Text Spacing Prototype for Silver

https://docs.google.com/document/d/1efjXi8fw9uxCKygQ3JZD4PAMtSCFMaH83hX3Yae8jd4/edit#

<shawn> https://docs.google.com/document/d/1efjXi8fw9uxCKygQ3JZD4PAMtSCFMaH83hX3Yae8jd4/edit#

https://docs.google.com/document/d/1efjXi8fw9uxCKygQ3JZD4PAMtSCFMaH83hX3Yae8jd4/edit#

js: working on user needs. Need most help here

medical defintions

shared needs

unique needs

then write the test to match the user need.

js: silver guideline template: https://docs.google.com/document/d/1RcCyt9PJKUIjj341qc_ERiQrwoMUCWMP-exGXZgkzEk/edit#heading=h.f3izuau3im
... LVTF can use OUR user needs document.
... interested in testing.
... also working on systemic biases about people with disabilities. work lots on functional needs.

as: working on color contrast. massive interconnection with visual presentation elements. stroke width, font size, contrast, spatial frequency (thin fonts, letter spacing)
... soup of elements that combined determine viewability. very difficult to look at these things in isolation.

js: no concensus on this topic yet.
... important thing. id who need text spacing. what is different between each group.
... eg color difficiency need different contrast, vs albinism text spacing needs for nystagmus.

as: color blind - generally function fine re: spacing.
... cognitive issues -- dyslexia, text spacing directly effect contrast.
... READABILITY - acuity (legibility) vs functional readability (need specific font size for maximal reading speed, and best contrast for max reading speed)
... not thresholds - want maximal functioning of user.

<wayne> q

<shawn> current draft wording -- "For example, a person may be able to distinguish letters at a given point size on a vision test where they are reading only one letter at a time, but they cannot actually read blocks of text at that same point size. This is the difference between legibility and readability. Legibility is related to perceiving text by distinguishing letters. Readability is related to

<shawn> reading and comprehending textual information. Thus text could be somewhat legible to a person, yet not functionally readable—with effort that user could distinguish one letter from another, but could not effectively read sentences." https://www.w3.org/TR/low-vision-needs/#functional-vision

where to post research: https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Research - add links. create necessary pages.

wd: cultural biases. terminology biases (diminishes the severity of the impairment)
... issues with research and statistics.
... come up with narrow finding, them people try to make policy. seems medical languages is biased against severity of imairment.

as: +1 wayne. working on language and concepts discussing acuity vs reading.

Show and tell -- need lots of examples to get the point across.

as: contrast sensitivity is critical.

ja: jean what is the granularity necessary for low vision groups.

js: need a couple of paragraphs in the explainer.

sh: has user needs document, very granular, and supporting documents. do other TFs have this type of information.

js: we could reference the original documents.

<shawn> spacing for reading https://www.w3.org/TR/low-vision-needs/#spacing

js: ok to copy from user needs documents. focus on common needs. pull out unique needs. add examples. then how to test

ja: user need - responsibilities - in the introduction/get started ....browser behaviors, authoring tool, and author.

js: perhaps a bulleted list. and a method for each responsibility.

jim: this will be huge

js: database driven. sort/sift/drill down as needed.
... included videos, images, resources, etc.
... w3c formatted view will only be 1 of many views.

common needs for text spacing

<laura> need to drop off.

<laura> bye

as: dyslexia - font and spacing needs. these also effect contrast and visual function. more space between things makes thing higher contrast.
... specify font size by x height not pt or px. x height is not in css. line spacing should be based on x-height

wd: ability to distinguish paragraphs, lines, words.

jim: are there specific groups within low vision.

wd: spacing is individual! user needs control
... need to define readability.

<shawn> also related is tracking

<Andy> Yes that is one of my websites

<Andy> That's my personnel "fun" site

<shawn> we have a whole section https://www.w3.org/TR/low-vision-needs/#tracking

wd: tracking is closely related spacing.

as: tracking and spacing closely related. kerning and line height.
... user adjustability past what the author has done.
... need the ability to adjust spacing without throwing out what the author. contrast sensitivity really need this.
... dark reader extension for chrome allows adjusting of stroke width or font size.
... increase font size of only specific elements. User adjustable - font metrics.

ja; many of the low vision needs are related and need to be cross referenced.

wd: typometrics - font metrics, spacing metrics.

<shawn> https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Main_Page#Meeting_Schedule

<shawn> next teleconference 7 November

Summary of Action Items

Summary of Resolutions

[End of minutes]

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Present: Jim Shawn Denise Jeanne Wayne Andy_Somers Laura
Regrets: Jon Avila
No ScribeNick specified.  Guessing ScribeNick: JimA_
Inferring Scribes: JimA_
Found Date: 10 Oct 2019
People with action items: 

WARNING: IRC log location not specified!  (You can ignore this 
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