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Bill Anderson
Works at Self Employed
Attended University of Idaho
Lives in San Jose, Costa Rica
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Bill Anderson

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Colorblind Pro version 1.1.1 is now in beta channel. The release features the addition of the Machado-Oliveira-Fernandes (MOF) model. While the BVM and MDWW models are based on the Helmholtz theory of color vision, the MOF model is based on the Stages theory of color vision. The MOF model also follows the replacement theory for anomalous trichromatic vision, and not the missing cone theory. This allows for much better simulation of partial loss.
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Bill Anderson

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Version 1.1.0 of Colorblind Simulator is now live. This version adjusts the color according to the surrounding brightness. The factor is called gamma. A gamma value of 1.0 is for bright surrounding light. a value of 1.25 is for dim surroundings, and 1.5 for dark surroundings. My app is the only app that allows automatic gamma variation based on the brightness setting for the device. A new level of accuracy in colorblind simulation. 
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While the previous article provided an overview of the physiology of the retina, this article tackles the concept of the illusion of color vision. Again it is an introduction to a vast topic.
Just as the universe is not bound to the human construct of three dimensions, the universe does not have color. As Peter Gouras states in "Webvision: The organization of the Retina and Visual System": "Color vision is an ill...
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I released version 1.0.7 of my Colorblind Simulator app to Google Play and Amazon this morning. Version 1.0.7 completes my original vision of 1.0.x, with a few additions.

While testing the app with a Bluetooth keyboard, I tested an alternate means of navigation via entering URLs in the Chrome browser. It does not work in Amazon's Silk browser. If you have the app installed, the links at the bottom of the attached page should work.
Color Vision Deficiency (CVD) alters how an individual perceives colors. The severe forms of CVD are known as color blindness. Colorblind individuals are unable to distinguish different colors depending on the type of color blindness. Individuals with partial color loss are often unable to ...
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I made a space for us on Google. Join me, https://goo.gl/spaces/gtNfP3cNfbagj7eB9
Small group sharing from Google
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Google I/O 2016 inspired several changes to my Colorblind Simulator app. #Firebase Analytics is now working for all flavors, and tied to Google Analytics. Still trying to find a way to track counts for individual activities.

$Firebase Crash is running on all flavors. It solved one NPE that was hard to catch. One major problem. Firebase Crash crashes on an Amazon Fire tablet when running the test case.

Session on fragments provided the information I needed to write a four line solution that allows dynamic changing of parameters.

Alas, I still have to do all my work on a five year old HP Mini-210 netbook. Precludes my upgrading to the latest version of Android Studio. My retirement budget just doesn't stretch far enough to buy a new laptop. .
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Sounds strange, but it is true. The cones that cover the retina of the eye are sensory cells that respond to light energy of different wavelengths.
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Gamma is one those little known factors in color simulation. Yet, it plays an important role. Gamma values have radically changed since the initial simulation studies. Operating systems and the Web have dramatically improved their handling of images, and now handle system gamma. Do models still need to make gamma adjustments?
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Rods and cones are just part of the retina layer of the eye. 
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Effective communication means designing for your audience. 
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The cones of the eye do not see RGB colors. The Long, Medium, and Short (LMS) cones respond to a range of wavelengths. The cones are receptors of light energy.
The names used to describe CVD (Color Vision Deficiency) confuse, but do not clarify, the functioning of the cones. There are no red cones, green cones or blue cones. RGB is a merely a human convention for describing colors b...
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8% 0f males and 1% of females have dichromatic vision. Many more have anomalous trichromacy, partial color blindness. This application provides tools to help those who work with CVD (Color Vision Deficiency) individuals to design materials they can see. Everyone should be given an opportunity to learn and participate in the everyday world.
Color Vision Deficiency (CVD) affects our ability to distinguish colors. It can impact on a child's ability to learn, the ability to select two socks that match in color, the selection of clothing, purchasing fruits and veget...
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Education
  • University of Idaho
    1968
Basic Information
Gender
Male
Other names
William F. Anderson
Story
Tagline
Just an old geek
Introduction
Air Force veteran from Vietnam era. Member of the American Legion. Became a ham radio operator in the 6th grade. My call sign is WW7BA.

Became involved with Unix in 1978, and Linux in 1996. I have written five books, and numerous course on Unix, Linux, Java, PHP, Perl, Shell programming, and web development.

Currently writing technology articles for my Android News for Costa Rica website, and preparing to relaunch Tell Me About Linux as an eLearning site.
Bragging rights
Graduated from University of Idaho. Red Hat Certified System Administrator. Vietnam era veteran.
Work
Occupation
Author, Web site developer
Skills
Linux, Android, Java, PHP, Drupal
Employment
  • Self Employed
    Consultant, present
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
San Jose, Costa Rica
Bill Anderson's +1's are the things they like, agree with, or want to recommend.
To Gamma or not to Gamma
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Directly or indirectly, Gamma adjustment is part of most color vision simulation models. Since Gary W. Mayer and Donald P. Greenberg wrote "

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