Word公式颜色修改方法的探讨

数理化等学科教师在Word文档编辑的过程中常常遇到若干个公式颜色是红色、蓝色或与常规文档(白底黑字)颜色不一致的情况,这种情况使用普通修改方法是修改不了的。从单色修改成彩色、彩色修改成单色两个方面探讨公式颜色的修改,重点介绍一种利用宏来实现批量修改公式颜色的方法,使若干个公式颜色在几秒内修改完成。

New Color-Difference Formula Based on CIECAM97s

To deduce a new color difference formula based on CIE 1997 Color Appearance Model(CIECAM97s), a color space J a 1 b 1 is first constructed with color appearance descriptors J,a,b in CIECAM97s. The new formula is then deduced in the space and named CDF CIECAM97s. The factors for lightness, chroma and hue correction in the formula are derived by linear regression according to BFD? CP data sets. It is found by statistical analysis that CDF CIECAM97s is in closer accordance with the visual assessments when compared with CMC(1∶1), CIE94 and CIE L *a *b * color difference formulae. Based on color appearance model, the new color difference formula can be used to predict color difference perception in a varity of different viewing conditions.

高温目标红外测量图像伪彩色显示方法

红外测量图像一般为灰度图像,对其进行伪彩色处理是一种非常重要的增强手段。传统的伪彩色处理方法未考虑到实际图像中高温目标与低温背景间的灰度级断点,处理后的伪彩色图像往往颜色数偏少,细节信息损失较多。为更好地显示高温目标及其边缘细节并兼顾低温背景的显示效果,本文首先根据灰度级将图像分为目标区、背景区和目标-背景过渡区,背景区包含多个背景及背景间过渡区。利用K-均值聚类理论对背景区进行聚类,根据聚类结果,采用灰度区间压缩方法确定多个背景及背景间过渡区的灰度级范围。根据各区间内灰度统计特征对整幅图像进行多段线性灰度映射,有效地均衡图像的灰度分布。引入视觉差异因素,采用CIE94颜色差异公式对传统颜色路径进行改进,实现等颜色差异的红外伪彩色显示。实验结果表明,本文方法较传统方法更适合高温目标红外测量图像,处理后的图像目标突出,图像细节色彩丰富,背景对比度较高,大大提高人眼对高温目标红外测量图像细节信息的辨识能力。

Experimental Evidence of the Formula of Saturation

There is more than one definition of the saturation ofcolour. In 2008, the author proposed a new formula for the saturation and in this presentation the experimental verification is shown by means of the Japanese Colour System PCCS, The distances in the lines of equal saturation have three maxima and three minima. A connection to neurology and to the colour sensation is possible. Making a new colour space with the saturation, the LSh-colour space, which is much more symmetrically than the LCh-colour space. This is of interest for calculating colour differences.

基于贪心算法的马赛克瓷砖选色优化方法

本文主要研究由于瓷砖厂马赛克瓷砖颜色有限,而原始图像颜色过多产生的最优颜色瓷砖的替代问题。考虑到图像的表现力,只要瓷砖的RGB颜色点能够尽量均匀分布在空间中,找出与已定22种颜色组成后能最大限度拟合整个RGB色块的颜色。再将整个RGB块分割为8个区域,取每个色块顶点作为待选点,采用离散型选址问题,结合加权后的像素颜色欧式距离公式以及迭代算法计算出最优解,使得每增加一种颜色后,根据算法输出的颜色距离值最小的点即为增加的颜色点,再通过贪心算法得出需要增加的1~10种颜色。