
Proceedings Paper
An interactive app for color deficient viewersFormat | Member Price | Non-Member Price |
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Paper Abstract
Color deficient individuals have trouble seeing color contrasts that could be very apparent to individuals with
normal color vision. For example, for some color deficient individuals, red and green apples do not have the
striking contrast they have for those with normal color vision, or the abundance of red cherries in a tree is not
immediately clear due to a lack of perceived contrast. We present a smartphone app that enables color deficient
users to visualize such problematic color contrasts in order to help them with daily tasks. The user interacts
with the app through the touchscreen. As the user traces a path around the touchscreen, the colors in the image
change continuously via a transform that enhances contrasts that are weak or imperceptible for the user under
native viewing conditions. Specifically, we propose a transform that shears the data along lines parallel to the
dimension corresponding to the affected cone sensitivity of the user. The amount and direction of shear are
controlled by the user’s finger movement over the touchscreen allowing them to visualize these contrasts. Using
the GPU, this simple transformation, consisting of a linear shear and translation, is performed efficiently on each
pixel and in real-time with the changing position of the user’s finger. The user can use the app to aid daily tasks
such as distinguishing between red and green apples or picking out ripe bananas.
Paper Details
Date Published: 8 February 2015
PDF: 9 pages
Proc. SPIE 9395, Color Imaging XX: Displaying, Processing, Hardcopy, and Applications, 939512 (8 February 2015); doi: 10.1117/12.2075162
Published in SPIE Proceedings Vol. 9395:
Color Imaging XX: Displaying, Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Alessandro Rizzi, Editor(s)
PDF: 9 pages
Proc. SPIE 9395, Color Imaging XX: Displaying, Processing, Hardcopy, and Applications, 939512 (8 February 2015); doi: 10.1117/12.2075162
Show Author Affiliations
Cheryl Lau, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Nicolas Perdu, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Carlos E. Rodríguez-Pardo, Univ. of Rochester (United States)
Nicolas Perdu, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Carlos E. Rodríguez-Pardo, Univ. of Rochester (United States)
Sabine Süsstrunk, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Gaurav Sharma, Univ. of Rochester (United States)
Gaurav Sharma, Univ. of Rochester (United States)
Published in SPIE Proceedings Vol. 9395:
Color Imaging XX: Displaying, Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Alessandro Rizzi, Editor(s)
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