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The color gamut boundary description algorithm is used to describe the size of the color gamut boundary and ensure the accurate prerequisite for the conversion of the color gamut mapping. With the development of the research, the application scope and content of the color gamut boundary description are becoming more and more extensive. Firstly, the paper summarizes the development of the color gamut boundary extraction algorithm, characterizes the realization principle of the color gamut boundary description algorithm and predicts the color transfer range which can be achieved by a given color reproduction medium. And then the method of color boundary description algorithm and color gamut mapping algorithm was studied. Finally the paper put forward the views and assumptions in allusion to the problems in the practical application.

Paper is widely used as a substrate for inkjet printing, where the paper feature heavily impacts the print quality, especially the color reproduction. The unprinted area on paper is visible and applied as a background reflectance for the toner layer. Hence, it is worthwhile to understand the effects of paper whiteness on print color reproduction. In this study, the tested papers were treated with different dyes, which resulted in the change of the paper’s optical properties, but not surface roughness. The print density was impacted by the paper whiteness and ISO brightness. The effect of the paper whiteness on the print density is a stronger linear correlation compared to the ISO brightness. Paper whiteness has a positive correlation with the ISO brightness. The print colorimetric values (lightness and chroma values) increased with increasing paper whiteness up to a certain level, after which the paper whiteness did not have a noticeable impact on its print lightness and chroma values. The print color (a* and b* values) was affected by its corresponding paper color.

Paper properties, especially paper optical properties, are important factors for ink-jet print color reproduction. The objective of this work was to explore the influences of paper optical properties on print color reproduction. Herein, papers were sized with different dyes which affect paper optical properties but had little effect on the other properties. CIE whiteness is better than ISO brightness to express the paper color, because CIE whiteness not only shows the paper lightness but also exhibits the color of paper. CIE whiteness of paper is an effective way to express the color reproduction. The color reproduction is mainly influenced by a* and b* values of paper. L* value above 94 did not have a significant impact in lightness of printed sample. The effect of paper CIE whiteness on color reproduction could be decreased by improving ink cover properties.