基于漫射照明的镭射纸颜色测量方法研究

镭射纸包装材料表面有金属光泽和虹光效果,这一特殊光学效果的存在,使得对镭射纸印刷品表面的颜色测量变得较为困难。研究了不同测试因素对漫射照明条件下镭射纸测量精度稳定性的影响。研究结果显示:不同的测量仪器摆放角度会对镭射纸的测量精度产生影响,且其影响大于白卡纸与镀铝纸;不同的测试点,其测试精度也不相同,通过取多个角度测量结果的平均值,可提高不同测试点之间颜色测量结果的可比性;不同精度的测量仪器也会对镭射纸的测量精度产生影响,仪器本身的精度越高,测量结果越稳定。

Study on Laser Paper Color Measurement Method Based on Diffuse Illumination

Laser paper packaging material is of metallic luster and Avision effect. The existence of the special optical effect makes it difficult to measure the printing color of laser paper surface. The effects of different factors on measurement precision stability of laser paper under diffuse lighting conditions were studied. The results showed the different placed angles of measuring instruments would influence the measuring precision, and the effect is greater than the white cardboard and aluminum plated paper. The measuring accuracy varied with different test points. By taking average value of multiple angle measurements, the comparability of color measurement results at different test points could be improved. The measuring instruments with different accuracy would also affect the measurement accuracy of laser paper, namely the higher the accuracy of the instrument, the more stable of measurement results.