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Messages - JMR

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31
General / Re: To Create and to export a Section from Ortho
« on: March 04, 2021, 11:36:54 PM »
Exporting profile as 3d dxf is supposed to produce exactly what you got. a 3d polyline. If you want rather to export the profile plot with axis, labels, etc. I'm affraid you need to export the profile as an image and paste it wherever you need it in your drawing, but it will not be a vector graphic.
Regards.
Geobit & Accupixel



32
General / Re: How does Assign Images works ?
« on: February 23, 2021, 09:53:02 PM »
Quote
but the best fit image will be assigned automatically
There is something that should be clarified. This automation takes for reference the location of first vertex you enter when you draw the patch.
I think developers should rather offer a few best choices according to:
1. Camera closer to the centre of mass of the patch (no to the first vertex), and closest to the principal point of suitable cameras.
2. Best orientation. best fit plane on patch vertices could be used to sort photos according to angle with respect to the patch.
3. Content awareness. In a more advanced approach, the software should be able to skip photos with pixels that are inconsistent between overlapping photos. That would help to remove moving vehicles, for example. Actually I wonder IF Such smart filter could not be used during orthomosaic creation as well to automatically remove people, cars, birds, branches, etc.

Regards
José Martínez
GEOBIT / ACCUPIXEL

33
General / Re: New 1.7 Cylindrical DEM/Ortho Issues
« on: January 18, 2021, 04:17:25 PM »
Hello JRMertes,

For cylindrical orthomosaic generation you should also select the mesh source, as it currently doesn't work for DEM source option in this mode.


Hello, Alexey
I have reported this option not working more than a year ago. You also answered "currently..." and that made me think it was a temporary issue... I have seen quite a number of updates and fixes since, but this inability remains unsolved. Why? I remember it worked well once, so I wonder what it takes so long this fix to come. IN the meantime the option should be disabled to warn user to not waste time.
Best regards.

34
General / Re: Agisoft Metashape 1.7.0 pre-release
« on: January 01, 2021, 09:25:56 PM »
Happy new Metashape version!
Exclude stationary points... sounds like a great help for rotary table scans, doesn't it?

35
General / Re: Crop a DEM or Orthophoto
« on: December 03, 2020, 03:39:22 AM »
Yes:
Create a polygon  and set it as outer boundary (right click on it). This will apply to exported orthomosaic or DEM. (You can also use inner boundaries to create void areas as well)
JMR
Accupixel LTD
Agisoft Training

36
Can be done by masking, but a strighter method would be welcome.

37
Feature Requests / Re: Feature Request : Copy Cameras
« on: December 01, 2020, 04:17:11 AM »
Not the answer to your wishes and takes more time, but, what if you duplicate chunk A, then move desired photos from copy of Chunk A to chunk B and then delete copy of chunk A....?
This way you would get "move to" working as "copy to".

Regards,
Accupixel

38
General / Re: Fixing Metashapepath to the folder containing the pictures
« on: November 21, 2020, 03:12:01 AM »
Right click on one photo and choose change path. then browse to the new location, select the lost photo and apply to... your choice.
Regards

José Martínez
Accupixel co-founder

39
General / Re: "Keep keypoints" confusion - not working as expected
« on: November 19, 2020, 03:05:03 AM »
what does "reset alignment" in your step 3 mean? and why do you do so if you are trying incremental alignment... if you reset current alignment, then you are aligning from scratch... aren't you?



40
General / Re: "Keep keypoints" confusion - not working as expected
« on: November 15, 2020, 11:15:36 PM »
Hello, Andyroo:
I think you are doing the opposite as explained by Alexey.
You should not reset existing alignment and to do so you should make sure to unckeck=disable "reset current alignment".

Regards

41
General / Re: Discrete measurements of checkpoints in Metashape
« on: November 08, 2020, 09:03:18 PM »
Hello, Samantha:
I cant fully explain your error without further analysing your dataset and fully understanding your steps. when it comes tho the las question, the 3d error of a check point corresponds to the differences between input and estimated coordinates and to give this error in a single number they are just summarized as a quadratic mean

Regards

42
General / Re: Tabulated error in Metashape
« on: November 08, 2020, 08:43:16 PM »
Hello Samantha:
If you select one gcp and right click, you will see "info" option, that will list pixel errors for each projection.
I wonder if his is what you want. This will allow you to find images where projections (manual green  or automated blue) are not-so-well placed. Be aware that this error may be a sign of bad orientation of a given photo where GCP pixel errors are high even they look well placed.

Best regards.

José Martínez

43
Hello, Phoggi:
It is not possible to build a cloud with two different qualities in one step.
What you can do is build first the low quality dense cloud for the whole and then build a mask to isolate the part that you want to process with high quality. You can have the two dense clouds separated in the same  chunk, or in the case that you want to have both clouds merged, you can do as follows:
1. create low quality dense cloud and after all, duplicate chunk (including dense cloud)
2. in the copy draw a polygon around area of interest and use select points by shape, crop and create a mesh from remaining points.
3. import mask from model
4. build HQ dense of selected area.
5. group all photos in copy chunk (in case you want to remove duplicated photos in next step)
5. merge chunks with dense clouds (and then remove the grouped photos from the merged chunk)

Regards
José Martínez
GEOBIT CONSULTING SL CTO.
ACCUPIXEL LTD. co-founder.

44
Yes.
1. Build a rough mesh on the sparse cloud using highest triangle count or even better, a custom quality number with 2x the number of tie points. (consider using height field mode if your project allows it)
2. Select your area of interest on the triangle mesh and use crop button to keep only the selected triangles.
3. File import masks from model. (to all photos, to a selection of photos or to the entire workspace)

As long as triangles on tie points are going to be large and uneven, your selection and therefore your mask, will have borders like a saw. If you want them to have cleaner boundaries you can build a low quality dense cloud, then use a polygon to select dense points inside, then crop. Next is to build a mesh based on the remaining dense points (extrapolation disabled) and again use mask import form model.

I hope this workflow works for you.
Best regards

José Martínez
GEOBIT CONSULTING SL CTO.
ACCUPIXEL LTD. co-founder.


45
General / Re: Exported obj not proportional
« on: October 01, 2020, 10:05:22 PM »
I can't say, what could be the source of your problem. Actually your networks looks pretfy robust, and the only thing I can say it could serve to improve it is to mix some ring with camera rotated  in portrait (as opposed to landscape).
Also I would ask what camera/lens combo and what focus setting were used.
Regards

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