A Study On The Consistency Of Color Between Computer Input And Display Devices

The main issue is to realize the computer input device and display device color consistency,make the color in the input device and display device between the loss of color information of color transfer at least,the exact reproduction of color reproduction,implementation is seen color is the final color,it is displayed on the display device color and manuscript color consistency.According to the different input device and display color management system equipment.The input device respectively adopts scanners and digital cameras,using two sets of different color target IT8.7/2 color target and custom color target,respectively on the scanner and camera modeling,get the scanner and digital camera RGB->Lab two sets of different color target modeling data,then using unit polynomial regression respectively realize scanners and digital cameras in the RGB->Lab color space conversion.Display device adopts LCD display,Lab->RGB display with Eye-one modeling data acquisition equipment,realize the display of the Lab->RGB color space conversion respectively by polynomial regression,unit partition polynomial regression and structural cube center point substitution method.Three dimensional visualization using OpenGL library functions of the color gamut,compare the input device and display device gamut size,for more than a display device gamut points using relative colorimetric method of color gamut mapping.The input device and display device to the whole system of color management.First of all,the paper color manuscript through the input device input,to obtain the RGB color mode of the picture,realization of RGB->Lab conversion for each pixel in the image.Secondly,to realize the 3D visualization of color gamut of different devices,judging by converting the Lab value obtained from the input device is in the display color gamut range,judging whether to color gamut mapping.Thirdly,the realization of display device color space conversion of Lab->RGB,the RGB values obtained the final display driver on the display.Finally,the evaluation of color consistency,using subjective evaluation and objective evaluation calculation of human color combination method,through the comparison of the picture on the display directly through the input device and color management after the picture which is closer to the original,Experiments show that,the color management after the color picturescolor more close to the paper color manuscript,realized the computer input device and display device color consistency.This topic is in the Windows 7 environment,with VC + + 6.0 developed "computer input device and display device color consistency" system program,The results showed that,this procedure can effectively realize the input device and display device color consistency,Color management for future further study gives theoretical reference and practical experience,and has good application value.