RGB图像颜色检测的Cd（II）浓度测量研究

在实验中，镉离子（Cd（II））与对硝基苯重氮氨基偶氮苯反应的溶液随着Cd（II）浓度从0.0660～0.6482μg/mL会有颜色深浅的变化。为了探求颜色变化与Cd（II）浓度之间的关系，本研究包含了红绿兰（ RGB）测量结构、实验图像采集、对实际采集的RGB图像数据处理，其中重点在于RGB图像处理中的图像定位、图像分割和RGB图转YUV图时V值计算。最终通过非线性拟合得到颜色变化（ V值）与Cd（ II）五种浓度之间的关系服从指数函数关系。

Research on measurement of Cd(II)concentration based on color detection of RGB image

It is discovered that the color of the reaction solution between Cd(II)and 1-(4-nitrophenyl)-3-4-(phenylazo)phenyl]-1-triazen changes corresponding to the change of Cd(II)concentration from 0. 0660μg/mL to0.6482μg/mLinexperiments.ForhuntingforrelationshipbetweencolorchangesandCd(II)concentrations, the research includes measurement structure,image acquisition of experiments,data process of RGB image acquired. Among them,the keys of image processing in RGB images are the image positioning,image segmentation and V values calculation when RGB format transformed to YUV format. Utilizing the non-linear fitting,relationship between color changes( V values)and five concentrations of Cd( II)obeys the exponential functions.