Image measurement device, image measurement method and program
The image measurement device accurately converts displacement to real scale by using a laser rangefinder to determine the distance from the principal point of the optical system, addressing inaccuracies in existing systems and eliminating the need for markers.
JP2025181046APending Publication Date: 2025-12-11NEC CORP
Patent Information
- Application Number
- JP2024088790
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-12-11
Smart Images
Figure 2025181046000001_ABST
Abstract
To improve the precision in conversion of displacement of an object in an image into a real scale without using any marker.SOLUTION: An image measurement device 10 comprises: a measurement distance acquisition part 11 which acquires the distance to an object of measurement measured by a laser range finder in fixed relation with an imaging device; a photographic distance calculation part 12 which applies a correction value to the acquired distance to calculate the distance from a front principal point of the optical system of the imaging device to the object of measurement; and a displacement measurement part 13 which calculates displacement of a specific part of the object of measurement and uses the calculated distance to the object of measurement to convert the displacement of the specific part in a photographed image into a real scale.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Vibration measuring device and measuring method thereof
JP2005283440A
Correction parameter calculation method, displacement amount calculation method, correction parameter calculation device, and displacement amount calculation device
WO2021075090A1