阐述了手机组合测距仪代替传统木材检尺的理论和方法,在手机获取的影像和测距仪测量的距离数据基础上,应用计算机视觉技术分割出木材端面,并使用摄影测量技术计算端面面积,进而计算得到材积。实例分析表明,该方法测量精度与人工检尺相比误差稳定在3%以内,满足国家对于木材检尺误差的要求,但对于部分企业要求更高的小于1%的误差要求还未达标。该方法可替代传统的木材检尺进行工作,提高检尺工作者的工作效率,降低检尺工作的危险性。

This paper describes the theory and method of the mobile phone combined with rangefinder instead of the traditional log scaling.Based on the distance data measured by the image and rangefinder instrument,computer vision technology is used to segment the end face of wood and the photogrammetry technology used to calculate face area and the volume.The example analysis shows that the measurement accuracy of this method and the manual measurement error is less than 3% and meets the national requirements for wood scale error,but for some enterprises which require less than 1%,it has not met their error requirements.The method can replace the traditional timber inspection ruler,improve the working efficiency of the workers and reduce the risk of the work.