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Compare your point cloud with a 3D model

In this article, you will learn how to use the scan tool in the Viewer. This tool allows you to compare a point cloud with one or more models.

pointcloud
viewer
analysis
comparison

  Note that this tool is not free, to use it once you have to exchange tokens, to buy tokens, access your business management page.

 

The point cloud / model comparison allows you to compare a point cloud with one or more models. This tool helps you see if the model you created is close to the actual item. You must remember, however, that a percentage of 100% is not achievable because the point cloud can sometimes have points in the wrong place.

 

Let's open the analysis submenu, to do this, click on the magnifying glass in the left menu, then click on the cloud icon to access the comparison menu.

 

1. You must first select the point cloud you want to use for the analysis.

 

2. Go ahead and select the depth of the scan, with 1 being the lowest quality and 10 being the highest, be careful though, choosing a higher quality will require more resources and more time.

 

3. Then choose the models you want to compare to your point cloud.

4. Choose your colorization option, "no limit", which will compare all the points of the viewer or "volume", which will only take into account those present in your cropping box.

5. Click on "start analysis" and wait for it to be done.

ℹ️ it may take a while if you have chosen a high level of detail, but don't worry, it's being processed, don't leave the page ℹ️

We landed on the results page, here you have your results and some new options, let's see them all.

6. At the top left, you can see 3 options

- All points (default): All points that have been calculated are displayed

- In tolerance : Only points close to the model are displayed

- Out of tolerance : Only points far from the model are displayed

7. You can change the tolerance using the analysis range slider, drag the 4 points to change the tolerance according to your need, if you want to be more precise, move all your points closer to the middle, if you want to get more stitches, place your stitches closer to the ends.

ℹ️ You can also move the points by clicking on them to select them, then pressing the arrows on your keyboard to move them up and down (useful for precise placement) ℹ️

You will see that changing the tolerance affects the validation percentage, bringing it closer to 100% when using a larger tolerance.

8. You can see that you have 2 different validation percentages, the first is the one calculated from the 2 middle points, the second from the 2 end points.

9. Then you can see that you have a few options, the first one allows you to change the opacity of the model and the point cloud, by default both are displayed.

You can also decide to make the point cloud appear under its original color by using the button below

 

⚠️ The percentages we give you are indicative values , they cannot be taken for granted and are just there to give you an idea of the similarity between the scatter plot and the models. ⚠️

 

In case of problem or difficulties, do not hesitate to contact the platform team  

Were these informations useful to you ?
Editor : Alexis Helper
Creator : Alexis Helper
Last modification : 08/12/2021

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