A digital image (DI) method is reported to determine the transmittance and the uniformity of transparent optical materials (TOMs) at the same time, in which an objective image (OI) with a two dimensional (2D) entropy of 3.45 is scanned using a scanner with a black background. The OI pictures covered without and with a TOM went through gamma correction and color correction. The two corrected pictures were transformed into two matrixes, between which the transparency ratio and the correlation coefficient refer to the transmittance and the uniformity of TOMs. As a result, a p-value of 0.97 and an r value of 0.92 were achieved from the paired T-test between the DI method and the ultraviolet spectrometry (UVS) method, indicating a similar accuracy in determining the transmittance of TOMs between them. In addition, the DI method is a simple and rapid method to evaluate the uniformity of TOMs and to reveal the correlation among transmittance, uniformity and thickness of TOMs, particularly applicable for inhomogeneous TOMs.

中文翻译：

---

利用数字成像来检测透射率与透明光学材料的均匀性

据报道，一种数字图像 (DI) 方法可同时确定透明光学材料 (TOM) 的透射率和均匀性，其中使用二维 (2D) 熵为 3.45 的客观图像 (OI) 进行扫描。黑色背景的扫描仪。没有和有 TOM 覆盖的 OI 图片经过伽马校正和颜色校正。将两张校正后的图片转化为两个矩阵，其中透明度比和相关系数是指TOM的透射率和均匀性。结果，从配对T中获得了 0.97的p值和0.92的r值-DI 方法和紫外光谱 (UVS) 方法之间的测试，表明在确定它们之间 TOM 的透射率时具有相似的准确性。此外，DI法是一种评估TOMs均匀性和揭示TOMs透光率、均匀性和厚度之间相关性的简单、快速的方法，特别适用于不均匀的TOMs。