SfM Processing Machine for Geographic Information Systems

2022/11/21 TEGARA Co., Ltd. Research workstation, R & D PC configuration example (Tegsys)

A customer involved in the development of a geographic information system consulted us about an SfM processing machine.Metashape,Context CaptureUsing SfM processing software such asProcessing a large number of high-resolution photos (about 1 million pixels)It is assumed that In addition to SfM processing, it is also used for 3D data editing of high-density point clouds, 3D modeling, and CAD processing.

Here are the specific specs you are looking for:

・CPU: Xeon Gold class or higher The number of cores is undecided　
・Memory: 128GB ECC or more
・Storage for OS: Install OS on 1TB SSD M.2 or higher
・Data storage: Data is stored on an external NAS, so the capacity is small.
・Video card: Undecided
・Budget: About 200 million yen

 

We proposed the following specifications based on the conditions we received from the customer.

【Main Specifications】

CPU Xeon W-2295 (3.00GHz 18 cores)
memory 256GB
Storage 1 1TB M.2 SSD
Storage 2 2TB HDD S-ATA
video Nvidia RTX A6000
network on board (10/100 / 1000Base-T x1 5G x1)
Housing + power supply Middle tower case + 850W
OS Microsoft Windows 11 Pro 64 bit

The points for selecting a CPU are as follows.

■ Points
・In Metashape and ContextCapture,CPUs stop scaling at a certain amount of parallelism.

・When considering the use of scheduled software, like Xeon Gold,A CPU with a high number of cores but not a high operating clock"Is"A CPU with a small number of cores but a high number of clocks per coreIt is thought that the processing will be slower than

Based on the above, since the image data handled in this case is large,Equipped with 128GB or more of memory + CPU specs”, we proposed a configuration using the Xeon W series CPU.

Also, both of the software you plan to use have a certain degree ofGPU power required.
Initially, we expected to introduce a configuration that adopted the Geforce RTX3090,After confirming the requirements of the CAD to be used, I changed to an OpenGL compatible video card.

The configuration of this case study is based on the conditions given by the customer.
Please feel free to contact us even if you are considering different conditions from what is posted.

 

■FAQ

・What is Metashape?
Metahsape is software that can build high-quality 3D models from photographs (still images).
There are a Standard Edition with basic functions and a Professional Edition with more functions, and the Professional Edition can also create 3D GIS contents from aerial photographs.
Metashape licenses are handled by Unipos.

reference:Metashape (Agisoft) * Jump to the website of "Unipos", an overseas product procurement and consultation service for our research and development.

 

・What is ContextCapture?
ContextCapture is software that automatically creates 3D models of buildings, man-made objects, and natural terrain from photographs.
It has a good reputation for use in the construction field, such as the unnecessary unevenness of the flat surface and the high accuracy of the shape representation of the sides.

reference:Context Capture (Bently) *Jumps to an external site

 

・What is OpenGL?

OpenGL is a library for supporting 2D/3DCG-related calculation/drawing functions of hardware.
An open standard for graphics APIs for various drawing devices.

 

 

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SfM Processing Machine for Geographic Information Systems

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