动态体积测量是弹药装填工艺研究的一个关键问题,根据双目立体视觉获得的原始图像恢复三维立体图像是一种新的非接触式体积测量方法。通过三目立体视觉系统的建模、摄像机标定以及原始二维图像的区域匹配处理,利用OpenGL三维物理引擎实现了物体的三维重建和有效像素点的统计,从而计算出被测物体的体积。试验结果表明该方法有效解决了双目立体视觉拍摄盲区问题,提高了测量精度,可广泛用于粉末状物体的动态体积测量研究。

The bulk measurement of the dynamic powders is one of key issues in dynamite charging procedure. A new untouchable measurement method, which adopts Binocular Stereo Vision technique to reconstruct the 3D images, was proposed in this paper. First, the modeling of the vision system, the calibration of cameras and the match field processing of original images were made. Then, with 3D physics engine in OpenGL, the 3D-reconstruction was completed and the calculation of effective pixels was done. In this way, the bulk of the powder was obtained. The result shows that this system is capable of improving the measurement accuracy and overcomes the blind zone in Binocular stereo vision system. Therefore, the system can be widely used in the bulk measurement of the dynamic powders.