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Sim daltonism.1/1/2023 ![]() ![]() Software engineers with normal vision can locate any line of code easily, but those with vision deficiency have to remember all they've written in mind in order to locate a specific line. It's hard to imagine how many difficulties they have to face when pursuing their dreams. Yesterday, I watched a short documentary about blind software engineers in China. Thus, it's necessary to bring empathy and humility into the process of product design and develop inclusive products. There are many people in this world living totally different lives. Rethink Accessibilityĭuring the exploration, I realized that I had been living in a bubble for a long time. In the animation engine developed, users can pass a flag to turn on/off the sound effect. For example, when thinking about "right" and "wrong", what sounds do you hear?įor an item that is marked in green, which indicates it’s correct, we could play a correct sound effect at the same time when an item is marked in red, which indicates it’s wrong, we could play a wrong sound effect at the same time. We can use sound effects to convey information as well. Three vertices in group H are not only colored in purple but also labeled with the text "H".) 6. ![]() SIM DALTONISM. FREEFeel free to leave a comment if you have any ideas. However, there are still a few viewers complaining that the highlighted edges (shortest paths) are not very prominent. For example, in the visualization of Kruskal’s algorithm (see Figure 7), when we are scanning each edge in the non-decreasing order, not only is the edge highlighted in green but also the width of the edge is increased from 5 to 15. SIM DALTONISM. HOW TOHow to distinguish lines/edges in different states? In my videos, I use a large width as a second visual hint for a highlighted edge. After trying different visual hints, I found a few useful ones as follows. Therefore, we could potentially solve this problem by introducing one alternate hint other than color. How to make sure that colorblind learners acquire the same information as learners with normal vision? According to the Success Criterion "Use of Color" in WCAG 2.0 (Web Content Accessibility Guidelines), color should not be used as the only visual mean of conveying information. ![]() Sometimes information is conveyed by color. Views of 4 types of color blindness on vertex with a stroke.) Approach II: Introduce Alternate Hints Table 1 shows symptoms of each type and how common each type is among populations. The Red-Green Confusion is the most common, affecting around 1 in 12 men and 1 in 200 women. There are 3 major categories: Red-Green Confusion, Yellow-Blue Confusion, and Monochromacy (Complete Color Blindness). SIM DALTONISM. UPDATEI’m open to any constructive feedback from the disability community on anything that I may have gotten wrong, and I will update it accordingly. Thus, it may be a good start to include colorblind users when creating educational videos. I'd like to share what I've learnt and tried so far in this article. In other words, for a popular Youtube video with 10,000 views, there are as many as around 850 views viewed by colorblind eyes. Among Northern European descents, there are around 1 in 12 men (8%) and 1 in 200 women (0.5%) are colorblind. Inspired by my internship, I decided to make these output videos accessible.Īccording to a statistic, there are approximately 300 million people with color blindness worldwide. I have been developing an animation engine that creates videos on visualizing/animating computer algorithms. During my semester-long software internship at Xinspire, this is one of the most important things that I have learnt. Accessibility in visualization and animation could be largely improved by making small tweaks for colorblind learners.Įducational technologies should be created with accessibility in mind such that learners with disabilities are able to acquire the same information as people who do not have disabilities. ![]() We can introduce at least one alternate hint (e.g., label, width, sound). Don’t rely on colors alone to convey meaning.I recommend using Sim Daltonism to see what colorblind users see before selecting colors.There are 3 major types of color blindness: Red-Green Confusion, Yellow-Blue Confusion, and Monochromacy.Around 4% ~ 8.5% of the entire population is colorblind.All learners have equal access to educational resources without regard to race, color, sex, national origin, or disability. ![]()
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