摘要
针对CCD(Charge-Coupled Device)光学传感器采集电子剪切散斑干涉图像特征由于散斑指数高、峰值信噪比低,导致剪切散斑图质量差、检测效果不佳的问题,提出一种电子剪切散斑3CCD传感图像特征去噪优化检测方法。该方法分析了电子剪切散斑技术在三维物体表面变形检测中产生问题的原因,采用3CCD图像传感器替代单CCD图像传感器,引入同态滤波降噪处理图像,设计一种相位干涉技术,结合Canny检测算法,实现电子剪切散斑去噪优化检测。实验结果表明,应用3CCD传感器结合去噪技术的电子剪切散斑智能检测方法,图像散斑指数更低、峰值信噪比更高、检测时间更短,分别为0.0234、19.5 dB、16.2 ms,并且三维物体表面变形测量误差在0.09 mm内,该方法有效提高了图像质量,从而提高了实际应用价值。
Aiming at the problem of poor quality and detection effect of shearing speckle pattern due to high speckle index and low peak signal to noise ratio of electronic shearing speckle interference image acquired by CCD(Charge coupled Device)optical sensor,an opti-mized detection method for feature denoising of 3CCD sensing image of electronic shearing speckle is proposed.The reason of the problems caused by the electronic shearing speckle technique in the surface deformation detection of three-dimensional objects are analyzed.The 3CCD image sensor is used instead of the single CCD image sensor.The homomorphic filtering noise reduction processing image is intro-duced,and a phase interferometry technique is designed,which is combined with the Canny detection algorithm to achieve the optimal de-tection of electronic shearing speckle denoising.The experimental results show that the electronic shear speckle intelligent detection meth-od using 3CCD sensor and denoising technology has lower image speckle index,higher peak signal-to-noise ratio and shorter detection time,which are 0.0234,19.5 dB and 16.2 ms respectively.The surface deformation measurement error of three-dimensional objects is within 0.09 mm,indicating that the method effectively improves the image quality and thus improves the practical application value.
作者
杜朝
卫雅芬
DU Chao;WEI Yafen(Shanxi Yuncheng Vocational and Technical College of Agricultural,Yuncheng Shanxi 044000,China;School of Ocean Information Engineering,Jimei University,Xiamen Fujian 361021,China)
出处
《传感技术学报》
CAS
CSCD
北大核心
2024年第2期310-316,共7页
Chinese Journal of Sensors and Actuators
基金
江苏省科技计划项目(BE2021354)。
关键词
光学传感器
电子剪切散斑检测
同态滤波
相位干涉
3CCD
降低误差
去噪优化
optical sensor
electronic shear speckle detection
homomorphic filtering
phase interference
3CCD
reduce errors
denoising optimization
