Batch Color DeltaE CIE76

CIE2000 support planned for future

This is an implementation of the math on http://brucelindbloom.com for comparing a large number of RGB pairs using the CIE76 standard. All credit for the math goes to Bruce Lindbbloom and the Commission Internationale de l'Eclairage which defines the standards.

This program is fairly straight forward to use, however it does not sanitize the csv that you point it towards, so it is important to double check your files before use. The csv format to use is three integer RGB values seperated with commas, and a return character at the end of the line. This is the format output by google sheets when you export to csv. Like so

     162,101,45
     197,136,109
     221,221,217
     185,115,8
     187,145,20

The first RGB group on line 1 of the csv of the sample data set will be compared to the first RGB group on line 1 of the csv of the reference data set.

In the RGBtoLab() function, the variable names in the XYZ to Lab section match the variable names used on http://brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html to make the code implementation more legible.