Three-dimension measuring method and device

A technology of three-dimensional measurement and measurement data, which can be used in measurement devices, optical devices, instruments, etc., and can solve problems such as gaps

Inactive Publication Date: 2007-11-21
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this example, the following phenomenon occurred: that is, the part 201 of the ball that is different from the part to be measured is double, and there is a gap like the part 202.

Method used

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Experimental program
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Embodiment 2

[0051] Fig. 14 shows a second embodiment of the present invention. The laser measurement unit 301 performs laser measurement of an object. Data after laser measurement is stored in the memory unit 302 . The measurement condition adding unit 303 adds measurement condition data to the laser measurement data stored in the memory unit 302 . The synthesizing unit 305 combines and synthesizes the positions of measurement data measured from a plurality of directions stored in the memory unit 302 to generate reproduced data. The generated playback data is stored in the memory unit 302 . The level difference (level difference) evaluation unit 1401 evaluates whether or not there is a level difference in the reproduced data stored in the memory unit 302 . When the level difference evaluation unit 1401 evaluates that there is a level difference, the correction unit 304 corrects the measurement data stored in the memory 302 .

[0052] In detail, the level difference evaluation unit 140...

Embodiment 3

[0054] Fig. 16 shows a third embodiment of the present invention. In the laser measurement step 1601, laser measurement of an object is performed from multiple directions to generate measurement data. In the measurement condition addition step 1602, measurement conditions are added to the measurement data generated in the laser measurement step 1601 described above. In the correction step 1603 , the measurement data generated in the laser measurement step 1601 is corrected according to the measurement conditions added in the measurement condition addition step 1602 . Synthesizing step 1604, combining the positions of the measurement data corrected in the above-mentioned correcting step 1603, and then synthesizing them to generate reproduction data. In the display step 1605, the reproduced data generated in the synthesis step 1604 is displayed.

[0055] The measurement condition addition step 1602 has, for example, a configuration as shown in FIG. 17 in detail. In the measur...

Embodiment 4

[0059] Fig. 20 shows a fourth embodiment of the present invention. In the laser measurement step 1601, laser measurement is performed on an object from a plurality of directions to generate measurement data. The measurement condition addition step 1602 is to add measurement conditions to the measurement data generated in the above-mentioned laser measurement step 1601 . In the synthesizing step 1604, the measurement data generated in the laser measurement step 1601 are positionally synthesized and merged to generate reproduction data. In the level difference evaluation step 2001, it is evaluated whether or not there is a level difference in the reproduced data generated in the above-mentioned synthesizing step 1604. When it is evaluated in step 2001 of level difference evaluation that there is a level difference, in step 1603 of correction, the measurement data generated in step 1601 of laser measurement described above is corrected. Combining data 1604, the measurement data...

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Abstract

The invention discloses a three-dimensional measuring method and device comprising: a laser measurement section that carries out the laser measurement to object; a synthetic mechanism that synthesizes the measure data accrued from a plurality of direction by the laser measurement section; a storage mechanism that stores the measure data accrued from a plurality of direction by the laser measurement section and the reappearance data synthesized by the synthetic mechanism. It also has: a measuring condition synthetic mechanism for storing the measure data and the measuring condition; a correcting mechanism for correcting the measure data stored in the storage mechanism based on the measuring condition data so as to reduce the error produced by position incorporation and synthetic of the measure data accrued from a plurality of direction. And it can reduce the error in the measure result of the laser measurement even the error occurring in the relative position of two measurement data when carrying out the position incorporation of the measure data accrued from a plurality of direction.

Description

technical field [0001] The invention relates to a three-dimensional measurement method and a device thereof for three-dimensional measurement. Background technique [0002] As a mechanism for performing three-dimensional measurement of a product, there is a laser measuring device described in Patent Document 1, for example. The laser measuring device projects a laser beam onto the surface of the object to be measured and receives the reflected beam to calculate the position of the surface of the object to be measured. In the laser measuring device, since the position can only be measured on the surface touched by the laser beam, the operation is performed by measuring from multiple directions and combining the measured data positions in overlapping parts to perform synthesis. [0003] [Patent Document 1] JP-A-05-312526. [0004] Measurement results of conventional laser measurement contain errors. For this reason, when data obtained by measurement from a plurality of dire...

Claims

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Application Information

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IPC IPC(8): G01B11/24
Inventor 城山孝二荒木宪司门胁勇
Owner HITACHI LTD
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