基于智能手机的数字图像比色法增敏研究

Research on Sensitization of Digital Image Colorimetry Based on Smartphone

本文指出智能手机数字图像比色法是近年来广泛应用的检测方法,图像质量是影响智能手机数字图像比色法结果灵敏度的重要因素,图像质量与光照度、色温和手机本身参数密切相关。本研究探讨了不同的光照度、色温和手机参数是否影响智能手机数字图像比色法灵敏度。实验结果表明,手机参数感光度对数字图像比色法的灵敏度几乎无影响,但是曝光补偿和快门速度的影响比较大;曝光补偿为-3和快门速度为2500 s,提高智能手机图像比色法的灵敏度;在不同的光照度和色温实验中,发现光照度和色温不能提高智能手机数字图像比色法的灵敏度。本方案检出限为0.0057μmol/L,具有较好的重复性。检测低、中、高物质的量浓度样本时,其标准偏差(RSD)分别为3.29%、3.26%、1.63%。本课题研究的优化方案提高了智能手机检测的灵敏度,为智能手机在现场检测方面提供了参考依据。

This paper points out that smartphone digital image colorimetry is a widely used detection method in recent years,image quality is an important factor affecting the sensitivity of smartphone digital image colorimetry results,image quality is closely related to illuminance,color temperature,and phone parameters.This study mainly explores the impact of illuminance,color temperature,and phone parameters on the sensitivity of image colorimetric results.This paper discusses the influence of mobile phone parameters on the accuracy of image colorimetry.The experimental results show that the sensitivity has little influence on the results of digital image colorimetry,but the influence of exposure compensation and shutter speed is relatively large.The results show that the exposure compensation is-3 and the shutter speed is 1/2500 s,which improves the sensitivity and preparation of the smartphone image colorimetry.Different illuminances and color temperatures have little effect on the sensitivity of smartphone digital image colorimetry results.The repeatability of this study protocol is the relative standard deviation(RSD)of 3.29%,3.26%,and 1.63%,respectively,with a detection limit of 0.0057μmol/L.The optimization scheme studied in this project improves the accuracy and sensitivity of smartphone detection,providing a reference basis for on-site detection of smartphones.