A Research on the Color Characterization of Digital Camera

To study the color characterization of a digital camera,the characterization model for Sony DSC F717 digital camera,adopting once fitting and twice fitting for deriving colorimetric mapping between the RGB signals and the CIE tri-stimulus values XYZ and L~*a~*b~* respectively,uses polynomial regression technology and is analyzed here.Through comparing the difference of ΔE and σ~2,the difference between the two models and the effect of some parameters,such as rgb and constant term on the model precision,are discussed.Compared with the ICC profile precision made by Profile Maker,the conclusion that the RGB→L~*a~*b~* model can achieve a famous result choosing term=11 and 20,twice fitting is better than once fitting.