Knyrim K, Seidlitz H K, Hagenmüller F, Classen M
II. Med. Klinik, Klinikum rechts der Isar, TUM, Neuherberg, West-Germany.
Endoscopy. 1987 Nov;19(6):233-6. doi: 10.1055/s-2007-1018290.
We have conducted a study aimed at testing the color performance of video endoscopes in quantitative terms for the first time. The video endoscopes investigated were from Fuji, Olympus, Toshiba/Machida, and Welch-Allyn. The tests were carried out with an opto-electronic color analyser using standardized color charts and a neutral grey chart. Hue and chroma of the reproduced colors were measured. The Olympus video endoscope reproduces the hue very well, showing only slight color desaturation. The Fuji video endoscope had a yellowish tint, whereas the picture obtained with the WA video endoscope produced an inhomogeneous picture with a pronounced red/purplish cast at the top of the screen and almost neutral reproduction at the lower half. The Toshiba video endoscope was the only one with a color chip, and reproduced hue fairly well, but its colors were weakly saturated.
我们首次进行了一项旨在从定量角度测试视频内窥镜颜色性能的研究。所研究的视频内窥镜来自富士、奥林巴斯、东芝/牧田以及伟伦。测试使用了光电颜色分析仪，并借助标准化色卡和中性灰色卡进行。测量了再现颜色的色调和色度。奥林巴斯视频内窥镜能很好地再现色调，仅显示出轻微的颜色去饱和现象。富士视频内窥镜带有淡黄色调，而伟伦视频内窥镜所获得的图像不均匀，屏幕顶部有明显的红色/紫色色调，下半部分几乎是中性再现。东芝视频内窥镜是唯一带有色片的，其色调再现得相当不错，但其颜色饱和度较低。
