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首页> 外文期刊>Optics and Lasers in Engineering >Full-frame, high-speed 3D shape and deformation measurements using stereo-digital image correlation and a single color high-speed camera
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Full-frame, high-speed 3D shape and deformation measurements using stereo-digital image correlation and a single color high-speed camera

机译：使用立体数字图像关联和单色高速相机进行全帧，高速3D形状和变形测量

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摘要

Full-frame, high-speed 3D shape and deformation measurement using stereo-digital image correlation (stereo-DIC) technique and a single high-speed color camera is proposed. With the aid of a skillfully designed pseudo stereo-imaging apparatus, color images of a test object surface, composed of blue and red channel images from two different optical paths, are recorded by a high-speed color CMOS camera. The recorded color images can be separated into red and blue channel sub-images using a simple but effective color crosstalk correction method. These separated blue and red channel sub-images are processed by regular stereo-DIC method to retrieve full field 3D shape and deformation on the test object surface. Compared with existing two-camera high-speed stereo-DIC or four-mirror-adapter-assisted singe-camera high-speed stereo-DIC, the proposed single-camera high-speed stereo-DIC technique offers prominent advantages of full-frame measurements using a single highspeed camera but without sacrificing its spatial resolution. Two real experiments, including shape measurement of a curved surface and vibration measurement of a Chinese double-side drum, demonstrated the effectiveness and accuracy of the proposed technique.
机译：提出了使用立体数字图像相关（stereo-DIC）技术和单个高速彩色相机进行全帧，高速3D形状和变形测量的方法。借助于熟练设计的伪立体成像设备，由高速彩色CMOS相机记录测试对象表面的彩色图像，该图像由来自两个不同光学路径的蓝色和红色通道图像组成。使用简单但有效的颜色串扰校正方法，可以将记录的彩色图像分为红色和蓝色通道子图像。这些分离的蓝色和红色通道子图像通过常规的立体DIC方法进行处理，以恢复测试对象表面上的全场3D形状和变形。与现有的两机高速立体声DIC或四镜适配器辅助单机高速立体声DIC相比，所提出的单机高速立体声DIC技术具有全帧测量的显着优势使用单个高速相机，但不牺牲其空间分辨率。通过两个实际实验，包括曲面形状的测量和中国双面鼓的振动测量，证明了该技术的有效性和准确性。

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