The Uncertainty Evaluation Of Color Measurement Based On RGB Trichromatic Data

Using the camera for capture RGB data of image to achieve colorimetric measurements.Through the method of polynomial regression to realize the conversion of RGB data to the CIE-XYZ data,we got the linear and non-linear polynomial equations for comparative analysis,and calculated the data by uncertain method to obtain linear and nonlinear uncertain value.and finally made assessment results.While doing this subject, I used a digital camera and camera both based on RGB color space color equipment to acquire data, the former was excluded due to the characteristics is not consistent with the requirements of the project. I selected the camera as an experimental instrument. By the study of chroma conversion method, I chose polynomial regression method to convert RGB color space CIE-XYZ space. Using MATLAB software for data analysis set up mathcmatic model to determine the uncertainty of the model.The study of this subject provide a certain reference and a thought on similar problem in future further research,also provides a typical example on the choice of optimization method.