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    • 4. 发明授权
    • Outdoor range finder
    • 户外测距仪
    • US06331887B1
    • 2001-12-18
    • US09355707
    • 1999-09-23
    • Kazunari ShiraishiHitoshi WakisakoYoshinaga MaruyamaKyoji YanoMoriyuki Nakashima
    • Kazunari ShiraishiHitoshi WakisakoYoshinaga MaruyamaKyoji YanoMoriyuki Nakashima
    • G01C300
    • G01B11/026G01B11/00G01C3/085
    • The present invention is a distance measuring device having a low power laser for use outdoors. The distance measuring device of the invention includes a laser emitting means that emits a pulsed laser beam to an object to be measured and an image reader that takes in irradiations images and stop period images of the object synchronously with an irradiation and stop period of the laser beam. A processing device then subtracts the stop image pixel values from the emission image pixel values to produce differential images. A minimum value image of the differential images is processed and binarized using a binary threshold to produce binary data from which a position where the laser beam is received is found. A calculation apparatus then determines a distance between the laser beam receiving position and the object based on the position where the laser beam is received.
    • 本发明是一种具有用于室外使用的低功率激光的距离测量装置。 本发明的距离测量装置包括:激光发射装置,其向待测对象发射脉冲激光束;以及图像读取器,其与激光的照射和停止时段同步地照射对象的图像和停止周期图像 光束。 处理装置然后从发射图像像素值中减去停止图像像素值以产生差分图像。 差分图像的最小值图像被使用二进制阈值进行处理和二进制化,以产生从其接收激光束的位置的二进制数据。 然后,计算装置基于接收到激光束的位置来确定激光束接收位置与物体之间的距离。