Details:
Summary:
The main sources of error in the colour reproduction of CRT displays are associated with offset, gain and gamma, phosphor and white point colours, as well as the ambient light. It is, however, true that all the parameters cannot always be measured with the highest accuracy. Especially, if the display calibration is based on visual tests, its accuracy is limited because the observer makes only a limited number of tests. Therefore, the measuring accuracy of the parameter should be linked to its importance in the colour calibration of the display. This study tests the importance of the parameters to the display colour calibration. A display is measured to establish the parameters, and the outputs are calculated for 50 test colours. The results are used as a reference. In the tests, one parameter - for example the gamma value - is distorted at a time, and the outputs of the test colours, as well as colour differences between them and the reference colours are calculated. The importance of the different parameters is analysed by running the similar tests for every factor.