Lastly. the color transformation can be improved by adding more standard color
patches. especially all shade covering the sample color. into the training set [24 patches
C0lorChecker) of color target-based characterimtion method. The equation will be
constructed with more complication but probably leading to better results. Nevertheless.
errors can still occur if the target spectral characteristics do not mulch those of the
original to be photographed. Consequently. the attempt on improving the color
transformation method can also be done by using the spectral-based characterization as
suggested by ISO H32]-l (2006). In parallel. the color transformation obtained from
pineapple images can be improved by increasing the data.