Development of three-dimensional measuring system of velocity distribution using circular shifting

圆周位移三维速度分布测量系统的研制

• 批准号: 11555056
• 负责人: KAWASUE Kikuhito
• 金额: $ 5.12万
• 依托单位: MIYAZAKI UNIVERSITY (2000-2002)Sasebo National College of Technology (1999)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555056/
• 关键词: Flow; Measurement; CCD camera; Velocity; Image Processing; Particles; Stereo; ステレオ視; 三角測定; 屈折レンズ; トレーサ粒子; CCDカメラ; 画像; 速度

Circular shifting method enables a three-dimensional measurement of particle movement using a single TV camera and an image-shifting device. By introducing a refractor on the TV camera lens, the image of the tracer particle undergoes a displacement on the image plane that is related to the distance between the TV camera and the tracer particle. When the refractor is rotated at high speed (3,600 r/min) during the TV camera exposure, circular streaks appear on the image due to the rotational shift. Since the size of the circular streak is inversely proportional to the distance of the measuring point from the camera, each streak contains 3D information about a measuring point, and this information can be extracted by processing the streak image. In this paper, combination method between circular shifting and stereovision method is introduced. By this combination, defects of each method are compensated and measurement accuracy is improved.

圆形移动方法能够使用单个电视摄像机和图像移动装置来实现颗粒运动的三维测量。通过在电视摄像机透镜上引入折射器，示踪粒子的图像在图像平面上经历与电视摄像机和示踪粒子之间的距离相关的位移。当折射镜在电视摄像机曝光期间高速旋转（3，600 r/min）时，由于旋转移位，图像上出现圆形条纹。由于圆形条纹的大小与测量点到相机的距离成反比，因此每个条纹包含关于测量点的3D信息，并且可以通过处理条纹图像来提取该信息。本文介绍了一种圆周平移与立体视觉相结合的方法。通过这种组合，弥补了每种方法的缺陷，提高了测量精度。

项目成果

K. Kawase, O. Shiku: "Circular dynamic stereo and its application"Proc. of the 3rd WSEAS symposium on mathematical methods and computational techniques in electrical engineering. Vol.1. 5301-5306 (2001)

K. Kawase，O. Shiku：“圆形动态立体声及其应用”Proc。

K. Kawase: "Three-dimensional Measurement Using Circular Velocity bias (Automatic Extractions of Circular Streaks)"Transactions of the Japan Society of Mechanical Engineers. Vol.67-661. 129-131 (2001)

K. Kawase：“使用圆周速度偏差进行三维测量（自动提取圆形条纹）”日本机械工程师学会会刊。

Kikuhito Kawasue: "Automatic Extraction of Particle Streaks for 3D Flow Measurement"Proceedings of the 14^<th> Korea Automatic Control Conference. 1. 270-273 (1999)

Kikuhito Kawasue：“用于 3D 流量测量的粒子条纹自动提取”第 14 届韩国自动控制会议论文集。

K. Kawase: "Two-dimensional measurement of Micro Deformation using an Image Correlation Method"Proceedings of the Fourth Asian Conference on Computer Vision. Vol.1. 771-776 (2000)

K. Kawase：“使用图像相关方法对微变形进行二维测量”第四届亚洲计算机视觉会议论文集。

川末 紀功仁: "円形速度バイアス法による三次元計測(画像処理の自動化手法)"日本機械学会論文集(C偏). 67巻. 2877-2882 (2001)

Norihito Kawasue：“使用圆周速度偏置法的三维测量（自动图像处理方法）”日本机械工程学会会刊（C偏置）第67卷2877-2882（2001年）。