Accessibility of images

[martinthomson]

https://c2pa.org/specifications/specifications/1.3/specs/C2PA_Specification.html#_hashing_a_bmff_formatted_asset contains some images, which would appear to include a bunch of really important procedural information. The information in these images is not very accessible. I am having a lot of trouble reading the text and I consider myself as having relatively good eyesight.

[lrosenthol]

@martinthomson I was pretty sure all the images had associated AltText - but will most definitely make sure! Thanks for pointing this out.

[martinthomson]

Note that I am also referring to the accessibility of the images for a sighted reader. Alt text is one thing, but the content of the images seems to be something that should be expanded more - likely in the form of text - in order to fully understand the procedures that are involved.

[lrosenthol]

@martinthomson I have made sure that every image and figure in the spec has useful AltText. Also, all images/figures are now linked into the text itself to help provided context.

I have an action item to work on some of images to make sure that there is associated REAL text to help explain them.