高清电子内窥镜图像信噪比的检测方法研究

Study on the Test Method of Image SNR of HD Electronic Endoscope

目的本文针对目前高清电子内窥镜在图像信噪比检测过程中的难点问题进行分析和讨论,提出一套全新的测试方法并形成了测试装置。方法设计并加工一套光学测试装置,并配合我们开发的高清数字图像分析软件,实现对高清内窥镜图像信噪比的快速检测。结果对一套已经上市的电子结肠内窥镜进行图像信噪比测试,测试结果的重复性误差为0.07%,其中测试靶标的亮度均匀度为2.64%,照明光源的色温6330 K,均满足设计要求。结论该方法和装置可以有效解决目前高清电子内窥镜图像信噪比检测的难点问题。该研究的成果可以在今后电子内窥镜的图像质量检测工作中发挥重要作用。

Objective To propose a new test method and form a test device through the analysis and discussion of difficult problems in the process of image signal-to-noise ratio(SNR)detection of high-definition(HD)electronic endoscope.Methods A set of optical test device was designed and manufactured,and with the HD digital image analysis software developed by us,the fast detection of SNR of HD endoscope image was realized.Results The image SNR of a set of electronic colonoscope already on the market was tested.The repeatability error of the test results was 0.07%,the brightness uniformity of the test target was 2.64%,and the color temperature of the lighting source was 6330 K,which all met the design requirements.Conclusion The method and device can effectively solve the difficult problem of SNR detection of HD electronic endoscope image.The research results can play an important role in the image quality detection of electronic endoscope in the future.