In the user testing, each test is done 10 times, then the
average value is determined. User testing is conducted by 5
normal vision users and 5 partially color blinded users. There
are two kinds of test, color perception test and user experience
test, which are conducted simultaneously. The color
perception test is intended to know perception of users toward
the defined colors and their ranges which are used in the
program to define colors to be detected.