Apparatus and method for measuring three-dimensional shape of a wood block

Apparatus and method for measuring three-dimensional shape of a wood block

  • CN 101,738,171 A
  • Filed: 10/26/2009
  • Published: 06/16/2010
  • Est. Priority Date: 11/06/2008
  • Status: Active Grant
First Claim
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1. the 3 d shape testing device of a log is characterized in that, comprising:

  • Light-emitting device, from a plurality of viewpoints towards interim axis direction irradiation along the continuous light of log length direction and with the wire light of described interim axis parallel, described log is that the center is supported pivotally with interim axle center;

    Camera head is photographed to the state of the wire irradiate light log that sends from above-mentioned light-emitting device;

    The device location information storage part, the device location information of the relative position in above-mentioned light-emitting device of storage representation and the above-mentioned relatively interim axle center of above-mentioned camera head;

    The light image position detection part, on image by above-mentioned camera head photography, specific above-mentioned wire irradiate light place, the light image positional information of the position on photographs at this specific place of detection expression;

    Distance calculation portion, the said apparatus positional information that use is stored in said apparatus positional information storage part reaches by the detected above-mentioned light image positional information of above-mentioned light image position detection part, carry out fixed computing, calculate respectively from above-mentioned interim axle center every a plurality of positions of deciding interval determination, to above-mentioned log outer peripheral face, each distance of above-mentioned wire light irradiation position;

    The profile test section, above-mentioned log is that center steering is between one-period with above-mentioned interim axle center, repeatedly photograph by above-mentioned camera head, by the above-mentioned light image positional information of above-mentioned light image position detection part repeated detection, and repeatedly calculate above-mentioned distance by above-mentioned distance calculation portion, according to the range information repeatedly part of being tried to achieve, decide the interval and ask for profile every above-mentioned at the above-mentioned log in the cross section vertical with above-mentioned interim axle center along the length direction of above-mentioned log.

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