基于蒙版方程的颜色传递机理，由色度密度变量实现色彩变换。
Based on the color transfer mechanism of the making equations, the color conversion can be performed by introducing the colorimetric density variables.
文中作者着重从测量和计算两个方面，对密度法与色度法描述印刷颜色的优劣进行了分析和比较。
The paper analyses and compares the advantages and disadvantages of density method and chromaticity method in describing the print color in the terms of measurement and calculation.
UCR有利于色彩密度和色度的良好再现，但会损失图像的反差和灰平衡效应。
UCR is conducive to the reproduction of density and saturation, but likely to lose contrast and gray balance of image.
印刷质量的控制包括密度、色度、网点面积、阶调的控制。
Printing machinery, film, the network printing, etc. Printing quality control including density, chrome, dot, adjustable control.
在分析了多种颜色聚类方法的基础上，提出了2种无监督的二维色度平面颜色聚类方法：基于密度的三角化方法和遗传算法优化方法，并通过实验对2种方法进行了比对分析。
After analysing manifold color clustering methods, we present two unsupervised methods based on 2-d chroma plane, i. e, the density-based triangulation method and the GA-based optimization method.
根据色度学和数字图像处理原理，讨论了如何计算数字图像区域周长和致密度。
According to the chroma and digital image processing principle, we discussed the principle and method of calculating the regional circumference and density of the digital image.
采用逐波相乘的光谱分析法，对密度值进行了理论计算。根据目前国际密度计与色度计的生产状况，探讨了2000年图象印刷色彩测量方法的发展趋势。
The paper applies the method of spectral analysis of multiplication by waveband to caculatedensity value in theory and discusses the future of the method of printing color measurement in2000.
采用逐波相乘的光谱分析法，对密度值进行了理论计算。根据目前国际密度计与色度计的生产状况，探讨了2000年图象印刷色彩测量方法的发展趋势。
The paper applies the method of spectral analysis of multiplication by waveband to caculatedensity value in theory and discusses the future of the method of printing color measurement in2000.
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