| 摘要 |
A method ( 300 ) is disclosed of performing chromatic adaptation The method ( 300 ) predicts final colour data viewed under a final illuminant from initial colour data viewed under a initial illuminant. The method ( 300 ) receives ( 310 ) the initial and final illuminant spectra and spectral sensitivity functions of the colors between which chromatic adaptation is to be performed. A linear chromatic adaptation transform is then determined ( 320 ) for transforming the initial color data to the final color data. The linear chromatic adaptation transform is determined ( 320 ) by minimising the residual error between color data predicted using the chromatic adaptation transform and the final color data. Different spectral bands of the illuminant spectra and the spectral sensitivity functions are weighted based on the contribution made by each spectral band to a predefined function. The method ( 300 ) then applies ( 330 ) the linear chromatic adaptation transform to the initial color data.
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