摘要：针对目前在图像修饰领域中LAB色彩模式的强大功能被广大用户所忽视的情况，本文研究了在photoshop中LAB色彩模式下修饰图片的初步应用方法。其中包括了简述LAB的构成与优点，并根据其结构上分离色彩与亮度的优势所设计的一系列修饰方法。包括曲线调整，锐化以及选区蒙版的创建，最后联系摄影师工作上会遇到的问题来将LAB的优势发挥到淋漓尽致。常用的色彩空间有RGB,CMYK和LAB。LAB模式所定义的色彩最多，且与光线及设备无关并且处理速度与同样快，比CMYK模式快很多。因此，可以放心大胆的在图象编辑中使用LAB模式。而且，LAB模式在转换成CMYK模式时色彩没有丢失或被替换。因此，最佳避免色彩损失的方法是：应用LAB模式编辑图象，再转换为CMYK模式打印输出。

关键词：LAB; photoshop;色彩空间;后期修饰

Abstract：Aiming at the condition that in current filed of image embellishment, the strong function of LAB color mode is neglected by extensive users, the thesis researches on preliminary application method of picture embellishment in LAB color mode of Photoshop. In this part, it includes that the thesis summarizes formation and advantages of LAB as well as a series of embellishment methods designed according to the advantage of structural separation of color and brightness, including curve adjustment, sharpening, and establishment of electoral district masking. Finally, give sufficient play to the advantage of LAB contacting with the problems that will be met in the work of the photographer. Frequently-used color space includes RGB, CMYK and LAB. The colors defined by LAB mode are the most. Besides, it has no relation with light and equipment. The processing speed is much faster than CMYK mode. Therefore, the user can use LAB mode in image editing with reassurance and audacity. Moreover, in the transformation of LAB mode to CMYK mode, the color is not lost or replaced. Thus, the best way to avoid the lost of color is that apply LAB mode to edit image, and then transform it to CMYK mode and make printout.

Key words: LAB; photoshop; color space; shallow analysis

根据文章对LAB定义与基本使用的介绍，我们已经揭开LAB神秘的面纱。LAB并不是我们想象的那么遥不可及。现代是数码流行的时代，数码暗房几乎取代了传统暗房，数码后期技术是作为摄影师不可缺少的能力。本文通过在一些处理上通过与RGB的对比来证明了LAB在图像修饰领域的一些优势,运用LAB来修饰图片或许不是主流方法，但是灵活运用一定可以节省不少工作时间，来提升工作效率。作为摄影师，能够了解并掌握LAB的修饰技巧可以让我们在以后的工作道路上更加顺利。但是LAB同样也是一把双刃剑，运用不恰当的话会让图像处理变得越来越棘手，同时在某些问题的处理上他确实不如RGB或是CMYK。我们只有通过不断的练习来积累经验，从而提高我们的后期能力。