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High Precision 3-D Measurement System using Flying Image

使用飞行图像的高精度 3D 测量系统

基本信息

批准号：
07044311
负责人：
INOKUCHI Seiji
金额：
--
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for International Scientific Research.
财政年份：
1995
资助国家：
日本
起止时间：
1995 至无数据
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07044311/
关键词：
Flying Image Method line sensor barrel-shaped distortion 3-D measurement high accuracy measurement distortion correction Slit Light Projiction Method carribration laser diode

项目摘要

We studied this theme mainly about 4 points as follows ;1. Character analysis of the Flying Image MethodIn the case of Flying Image Method, the shape of the image-observing surface is like a cylinder. But the shape of the focal plane is flat. Because of difference of the shape of both surfaces, the barrel-shaped distortion occurs in the input image. We analyzed this barrel-shaped distortion and developed the method to correct the distortion in the input image.2. Making the Flying Image SensorWe used CCD line sensor with 2048 pixels as a photo sensor. We used also conventional camera lens (35mm/55mm). The axis of lens and line sensor is crossed in a right angle, and the axis of mirror rotation arranged on the cross point. The mirror is rotated by the stepping motor controlled by the NEC-PC9801.3. Construction of the 3-D Measuring System using Slit Light Projection Method We constructed the 3-D measuring system using Slit Light Projection Method. The System is constructed using slit light laser diode, the Flying Image sensor, and linear stage. They are fixed by L-angle steel flames. The laser slit light is projected perpendicularly down to the linear stage, and reflected light is measured to the sensor on the diagonal upper position.4.3-D Measurement ExperimentIn the first stage of the 3-D measurment, a plane that the vertical slit is drawn measured. The correction of the barrel-shaped distortion is practiced using this image.In the second stage, the carribration is practiced. We used a standard seramic block gage for the carribration and the 3-D measurement.In the final stage, the measurement is practiced. The distance from the sensor to the object is 280mm and measuring area size is 70mm*55mm. As a result, the accuracy 0.07mm is obtained.

本文主要从以下四个方面进行了研究：1.飞象法的特点分析飞象法的象面形状为圆柱形。但是焦平面的形状是平的。由于两个表面形状的差异，在输入图像中出现桶形失真。分析了这种桶形失真，提出了对输入图像中的桶形失真进行校正的方法.飞行图像传感器的制作采用2048像素的CCD线阵传感器作为光电传感器。我们还使用了传统的相机透镜（35 mm/55 mm）。透镜的轴线与线传感器的轴线成直角相交，并且反射镜的旋转轴线布置在交点上。反射镜由NEC-PC 9801控制的步进电机旋转。利用狭缝光投影法构建三维测量系统我们利用狭缝光投影法构建了三维测量系统。该系统由半导体激光器、飞行图像传感器和直线工作台组成。它们由L形角钢火焰固定。激光狭缝光垂直向下投射到线性平台，并且反射光被测量到对角上方位置上的传感器。4.3-D测量实验在3-D测量的第一阶段，测量垂直狭缝所画的平面。在第二阶段，进行了载体化处理。用标准陶瓷量块规进行标定和三维测量，最后进行测量。传感器到物体的距离为280 mm，测量区域尺寸为70 mm * 55 mm。其结果是，精度达到0.07mm。