I am currently using Revo Metro 5.8.5 and have noticed the option to export point clouds with either “Model Origin” or “Original Origin.” According to the description, the Original Origin is defined as the left camera after epipolar rectification, or the coordinate origin of the imported global marker.
I would greatly appreciate some clarification regarding the precise physical and geometric definition of this origin. Specifically, does the Original Origin correspond exactly to the optical center of the left camera sensor, or is it a virtual coordinate defined after intrinsic/extrinsic calibration and rectification? Additionally, when a global marker is used, how is this origin related to the camera coordinate frame?
Understanding the exact location and definition of the Original Origin in physical space would help ensure accurate coordinate transformation and alignment within my workflow. Thank you very much for your assistance.
The originals origin is the location in space where the scanner registries the first frame after your clicked the “Start” button, it is the same Origin as all scanns in previous versions.
This includes the scanner position angle of the first frame , where the rest of the frames aligned. To make it simpler to understand. Imagine a roof with shingles, the first shingle on the roof define the Original Origin.
The left Depth camera capture the first Frame that is responsible for the Original Origin and there is nothing else to it.
The same goes for imported Global Markers and at what position you started recording the Global marker.
Also if you select specific first scan to be merged , the rest of the scans will follow the Origin Origin of the first scan you choice as number 1.
Thanks for your reply. I am currently using the Revo Metro Y Pro for precision machining and high-accuracy 3D measurement tasks. In order to achieve reliable machining results, I need to define the scanned geometry with a well-defined and accurate 3D spatial specification.
For example, in the documentation of depth cameras such as Orbbec, detailed specifications are provided regarding the precise 3D coordinate system definition.
Could you kindly provide similar technical information for the Revo Metro Y Pro?
This information would be extremely helpful for integrating the scanner into a precision machining workflow.
I am afraid I can’t share any details regarding the components , you will need to ask that directly via customer@revopoint3d.com
But I will not guarantee that you will get such information , documentation regarding components are not in public domain and rather trade secrets not shared publicly.
Thanks for your reply. I want to ask about another question. If I scan 2 time with different starting location. Will the location of the origin reference to the camera change? Will the coordinate reference to camera change every time I scan?
If you scan 2 times the origin will be always based on the first frame of the first scan .
Also when you merge multiple scans the origin will be based on the first scan you choice from the list , all other scans will adjust to the origin of the first frame scan.
The origin info is somewhere embedded in the project files but to be honest I don’t know exactly where as I never cared much about to find out.
The origin of the exported mesh as obj do have that information inside the obj file as well , so you can extract that info.
