可见光成像系统MRED客观评测方法研究

最小可辨色差(MRED)是评价可见光成像系统的重要技术指标,传统的测量方法都是由测量人员的主观判读得到的,精确度和重复性不高。文章提出了一种基于图像处理技术的最小可分辨色差的客观评测方法,并通过实验进行验证。利用数字图像处理技术对最小可分辨色差进行识别、判断来代替人眼的主观判断。客观方法测得的MRED为0.6764个色差单位。实验结果表明:测量结果准确,具有很好的重复性,与相同测量环境条件下由人眼主观测量的MRED结果相吻合。

MRED is an important technical parameter to estimate the color imaging system. The traditional measurement methodbased on the testers subjective judgment has low precision and poor repeatability. In order to get more accurate and objective MRED,an objective evaluation method based on image processing technology was developed. Using image processing technology to identifyand judging instead of human subjective judgment. The objective method of MRED is 0.6764. The results show that the value got bythe subjective measurement method is consistent with that of the objective.