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On-the-Fly Tree Caliper Measurement,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Some caliper measurement systems,[object Object],Ultrasonic transducer – Upchurch et al.,[object Object],Infrared LEDs to measure tree trunk profile - Singh,[object Object],Laser scanner – Henning, Thies,[object Object],Laser and vision - Byrne,[object Object],Optical sensor, laser and motion measurement Delwiche,[object Object],Our approach,[object Object],Structured laser lines and vision,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],How does it work?,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Features of our tree caliper measurement device,[object Object],Accurate, reliable measurement,[object Object],Can be used under any lighting condition – such as in the field under sun light or at night or indoor at warehouse ,[object Object],No precise position or movement required,[object Object],Can be attached to moving vehicle,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Indoor testing at Adams County Nursery warehouse,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Indoor testing – caliper estimate error,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Outdoor testing at Eisler nursery in Prospect, PA,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Outdoor testing – caliper estimate error,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Conclusion,[object Object],+/- 2.5mm outdoor, +/- 1mm indoor,[object Object],Operating at any ambient lighting,[object Object],Mounted on moving vehicle,[object Object],Operating simultaneously with other tasks,[object Object],Counting trees while moving along,[object Object],Automatically databasing of tree caliper,[object Object]
On-the-Fly Tree Caliper Measurement,[object Object],Future and on going works,[object Object],Conducting large scale testing in nurseries in Washington, Oregon, California and Pennsylvania,[object Object],Improve accuracy of caliper measurement,[object Object],Increasing sample rate,[object Object],Controlling measuring height,[object Object],Improve algorithm of detecting edges of tree trunk,[object Object],Reducing cost of the device,[object Object],Improve laser safety,[object Object]

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On-the-fly Tree Counting and Caliper Measure

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