Software for simulating dichromatic perception of video streams

We have designed a configurable stand‐alone Matlab‐based software to simulate dichromatic perception of video streams. The algorithm used is an extension for video streams of the “corresponding pair algorithm” by Capilla and coworkers for simulation of dichromatic perception of images. The software allows the user to upload a video sequence and to process it using different dichromatic color vision models and viewing conditions. The output video may be generated in different spatial and temporal resolutions and file formats. The functions for Matlab environment and a stand‐alone application may be downloaded from the Repository of the University of Alicante. © 2013 Wiley Periodicals, Inc. Col Res Appl, 39, 486–491, 2014     

Spatial integration with chromatic stimuli in dichromatic vision

The critical area of spatial integration was examined in dichromatic vision (protanope and deuteranope) by means of chromatic thresholds at equiluminance. The results showed that the critical area became smaller as the chromatic saturation of the background field was increased. Here, the chromatic saturation was defined by the colorimetric purity of the background field, multiplied by the saturation coeficient (Cs) of each dominant wave-length. For the 470-nm field condition, the trend of dichromatic data was similar to that of the previous data with normal subjects. For the 590-nm condition, however, the decrease of integration area was less than that of the normal. This discrepancy can be attributed to the diference of saturation coeficients between normals and dichromats. © 1994 John Wiley & Sons, Inc.