在总结现有图像彩色化方法的基础上，分析了彩色化由局部向全局扩展的本质，进而提出了一种通过求解拉普拉斯方程实现颜色扩展的彩色化方法。

In this paper, current colorization algorithms are summarized and the principle of color propagation is analyzed. Then a colorization algorithm based on Laplace equation is proposed.

youdao

最后你可以进一步用两种或者三种颜色，或者是用暖色或者冷色调色板，而且你的作品扩展到包括人物和风景。

Eventually you move up to two and three colors, then maybe a warm or cool palette, and your subjects might expand to include figures or landscapes.

youdao

清单1中展示的简单的颜色代码列表演示了新数据选项出现时如何扩展一个模式。

The simple code list of colors in Listing 1 illustrates how to extend a schema as new data choices emerge.

youdao