By Yun Ouyang, Min Xu, Li Yang, Yujie Ouyang
This e-book contains a number of reviewed papers offered on the 2015, 4th China educational convention on Printing and Packaging, which was once hung on October 22-24, 2015 in Hangzhou, China. The convention used to be together equipped by way of the China Academy of Printing know-how, Beijing Institute of image conversation, and Hangzhou Dianzi college. With three keynote talks and 2 hundred provided papers on photograph communications, packaging applied sciences and fabrics, the convention attracted greater than four hundred scientists.
These complaints conceal the hot learn results on colour technological know-how and know-how, image-processing know-how, digital-media expertise, printing-engineering know-how, packaging-engineering expertise and so on. they are going to be of curiosity to school researchers, R&D engineers and graduate scholars in photo communications, packaging, colour technology, picture technology, fabrics technological know-how, laptop technological know-how, electronic media and community know-how fields.
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Additional resources for Advanced Graphic Communications, Packaging Technology and Materials
Xiao Á S. Wuerger School of Psychological Science, University of Liverpool, Liverpool L697ZX, UK © Springer Science+Business Media Singapore 2016 Y. Ouyang et al. 1 M. Wang et al. Introduction The colour of skin is a signiﬁcant feature of human. It can reflect ethnic, health and habitat environment. It is also a critical factor for reproducing human facial image in printing and display industry. For diagnosing cutaneous disease, the skin colour is closely related to the effectiveness of the treatment.
1 Experimental Simulators In total, four simulators were investigated here. As mentioned previously, two of them (called LED-D50 and LED-A hereafter) were produced by a self-built LED system to simulate CIE-D50 and CIE-A illuminants strictly following the speciﬁcations of ISO 3664 . This self-built LED system included ten channels of monochromatic LEDs and one channel of white LED; therefore, the target spectrum with certain CCT, illuminance, CIE-Ra and MI values could be achieved through adjusting the intensity of each channel.
If we plot all the data in one chart (see Fig. 3), all the data are located around one curve, which looks like a triangle. And that is exactly the shape of ‘Whiteness’ and 6 Y. Wang et al. Fig. 2 Four skin groups data on C–L* charts a Chinese group data, b Caucasian group data, c Pakistani group data, and d Dark group data ‘Blackness’ or ‘Depth’ and ‘Vividness’. Therefore, ‘Whiteness’ and ‘Blackness’ or ‘Depth’ and ‘Vividness’ are better description of human skin colour than CIELAB L*, a*, b*, C*, h values.