RECOLORING ISHIMARA TEST IMAGE FOR PROTAN CVD PERSONS

Abstract

In this paper, the effect of the protan CVD algorithm is analyzed. Using the protan CVD algorithm, theimages are recolored, so that they are suitable for use by protan CVD people. In the first part, a trichromaticanomaly of the protanomaly type is described. After that, the protan CVD algorithm is described. The second part ofthe paper describes the Experiment in which the effectiveness of the CVD algorithm was tested. The CVD algorithmwas applied to images from the Ishihara color blindness test database, which were purposely formed to detect protanCVD persons. The results of the Experiment are shown using images and numerical values of the average chromaticdifference between every two pixels of the image. Finally, a comparative analysis of the results using objective(analysis of chromatic differences) and subjective (visual inspection of the image) methods is presented. Based onthe analysis, an evaluation of the efficiency of the protan CVD algorithm was given.