The system used spectrophotometric method can measure object optical character . and then , with cie standard observer spectral tristimulus value function the color property of the object can be calculated . finally , obtained upper precision 本系统使用分光光度法测出物体的光学特性,然后根据cie标准色度观察者光谱三刺激值函数进行色度计算获得了较高的精度。
The study results show that discriminant function of fabric textures can in fact be established through the 11 properties . including yarn count , twisting count , twist directions ( warp and weft ) , fabric unt , thickness , weight , weave and fabric color tristimulus values 由研究结果发现,确实可籍由纱支数、 ?度、 ?向、织物密度、厚度、重量、组织结构及织物色彩三刺激值等十一项性质,去建立织物质感的客观评估区别函数。
The photoelectric integrating color measurement instrument can obtain the objective tristimulus values via spectral energy integration of the color to be measured by the chromatic detectors , such as the colorimeter and color - difference meter , which have wide application in industrial practice 摘要光电积分式测色仪器通过色度探测器对被测颜色光谱能量进行积分测量,直接获得目标的三刺激值,如色度计和色差计等,已被广泛应用于工业实践。
Some typical luminance and chrominance measurement instruments will be mentioned in this chapter , too . chapter three will focus on the global structure of this system and analyze the select of detector and processor . also , the difference between relatively spectrum response of the cmos image sensor - ov7620 and cie standard observer relatively spectrum response will be given in this chapter 第三章阐述了本系统的总体结构,对本系统的cmos图像传感器和核心处理器? ?数字信号处理器( dsp )的选择做了详细的分析,并且给出了本系统所使用的传感器? ? ov7620的光谱相对响应曲线与cie标准观察者三刺激值曲线的差异。