Different levels of severity for the color vision deficiency can be emulated. A value of 100% means maximum deficiency, a value of 0% no deficiency at all. This value has to be adjusted before uploading the image.
You can use the keys "a", "s", "d", "f", "g", "h" to navigate trough the different tabs.
Reto Stauffer, Claus O. Wilke, Achim Zeileis
A graphical user interface (GUI) to check an existing jpg/png image for (possible) color constraints. The image will be converted to protanope vision, deuteranope vision, and a desaturated version (monochromatic vision). Allows a rapid check whether the colors used in the image show some constraints with respect to color deficiency or color blindness.
cvd_emulator. Takes an image object and converts
the colors using
desaturate functions. The image
will be written to disc as a PNG file.
It is mutually assumed and understood that uploading and converting images with
this app is done at your own risk. The creator/maintainer of the
colorspace package and the maintainer of hclwizard.org assume no responsibility
for the content of the uploaded images and a possible misuse of the uploaded
Uploaded images are temporarily stored in the temporary directory of the computer where the app is running and will be deleted immediately after the emulation has been performed. Neither the uploaded image nor the results are kept or stored longer than needed. However, in case of a script or server fault uploaded images and intermediate results might not be deleted immediately.