基于图像色网点化设计的织物结构呈色特征

Color rendering characteristics of fabric structure based on halftone design of image color

为克服提花织物色彩仿真设计受影光组织库显色规律制约的问题,提出一种图像色的网点化设计方法。采用3种网点大小与4种排列角度对黑白渐变色阶进行网点化设计,织造织物样品;并将网点织物样品组与一组采用缎纹影光组织库的织物样品进行比较研究。通过对织物样品的比较分析表明:网点越大则黑白渐变色织物样品组的明度值变化越均匀,但不足之处是在实践应用中对原始图像的细节表现减少;在网点排列角度方面,采用15°和75°角具有更稳定的织物交织结构;网点织物样品组的明度差离散平均值较后者降低了31. 94%,表明了图像色的网点化设计使织物具有更好的呈色均匀性。

In order to overcome the restriction of color simulation design of jacquard fabric by the color rendering law of shaded weave database, a halftone design method of image color was proposed. The fabric samples were produced based on the halftone design of the grayscale with continuous tone by using three kinds of dot size and four arrangement angles. By the comparison and analysis of the fabric samples, it is shown that the greater the dot size of the halftone design, the more uniform of the lightness difference values of the fabric sample group, but the deficiency is the decrease of the detail performance of the original image while applying to the practical design. In the point of dot arrangement, the fabric structures with 15° and 75° angle are stable than that of the other two angles. Comparing the halftone fabric sample groups with a group of fabric samples using satin shaded weave databases, it is found that the discrete average of the lightness difference value of halftone fabric sample groups is 31.94% lower than that of the latter, which indicating better color uniformity of the halftone design by image color.