Messages

1

General / Re: What is best practice if final mesh has unwanted surroundings next to it ?

« on: October 17, 2022, 02:18:36 PM »

Please anyone.

What are the exact steps to get rid of parts I can only see when mesh is made, and not have them reoccur ?

A fundamental thing when using the program but how is it done ?

Steve003

2

General / What is best practice if final mesh has unwanted surroundings next to it ?

« on: September 22, 2022, 04:24:20 PM »

Hi,
metashape 1.8.2
I had 20 mins to photo something I had planned for 40 mins at. Even so what I have is good and perhaps enough to model from in CAD.

I have aligned photos in Photoscan, as metashape rejected 19 of them. (it most often fails on quite a few, photoscan never fails), imported the project then to Metashape 1.8.2
deleted most of the scene which was background and unwanted.
I also removed the unwanted points visible in the open parts of the object, an old window frame without glass.
next step I chose was create mesh from depth maps, skipping the Dense Point Cloud stage, its better at detail and quicker.
Result sees some background next to the item I wish to remove., also the items visible through the window frame despite deleting those points has been modelled !

Should I delete the unwanted mesh adjacent and touching the window frame then run make mesh, but surely that will look at same data source and put back in those bits.

What are the exact steps to get rid of parts I can only see when mesh is made, and not have them reoccur ?

Cheers

Steve003

3

General / which buttons to turn on or off to view result merge chunks ?

« on: August 14, 2022, 01:14:47 AM »

Hi,

Is the result of 'merge chunks' to be viewed with the 'show aligned chunks' button on or off ?

see results attached.

following agisoft article 'manual chunk alignment'.
I have added chunk, turned on 'show aligned chunks' *layered blue icon far right of toolbar.
I see both chunks.
I had to scale down by 30% one to match size of other, rotate and align them and then one sat within the other with bits of newspaper and a shadow edge visible .
I ran merge chunks selecting 'model' (as I had made model from depth maps), not used dense point cloud at all.

result looks like the view just before I ran merge chunks !
I turn off the 'show aligned chunks' and double click 3d model in chunk 1, then look at chunk 2, and by doing a screen grab in photoshop I see no change in these two when viewing merged chunk, the messy face of chunk 2 is still there, it didnt take the better face of chunk 1. it didnt remove the newspaper,

Is the result to be viewed with the 'show aligned chunks' on or off ?

Its not taken the best of both, it probably doesnt know whats best, having no eyes as such. However its impossible to delete out the bad bits as the tool doesnt seem to have a limiter for mesh face nearest 'me' see other post.
I dont even see any movement in the meshes as I compare those photoshop screen grabs.

Steve003

4

General / What method to limit deletion to mesh face nearest me ?

« on: August 14, 2022, 12:29:53 AM »

Hi,
a square section W shape tube.
photos set1 lying on its side for its underside , side and topside, set 2 standing upright for its 2 sides and top.
set 1 will provide the underside for set 2.

merge chunks, set 1 sees an edge with shadow and remains of newspaper, I delete the mesh BUT it is not limited to the side nearest me, however much I try to move it around my selection is seen as also being on the far face.

see attached. when I moved the object I saw the far wall had been pinked up as well !

How do we select polys on the object face 'nearest me' ?

Basic need but I fear it doesnt exist in which case in any stage of the operation, its impossible to remove the meshes that are not required and may mess up the merge chunks.

please tell me we have a way to delete on face nearest us as we will all come across this problem.

Is there a better program that can do all this bringing chinks together and editing parts away that are not needed  ? The scale tool is atrocious, 2D rotate of a chunk , no tool does that, taken ages to keep my ortho correct chunks as they were .

Is there a better prog for bringing chunks together ?

Steve003

5

General / How does one set the scaling start point of the model resize tool ?

« on: August 13, 2022, 11:40:02 PM »

Hi,
How does one use the scale tool, placing the start point of the scale where its needed and then I presume its a drag operation.

I have two chunks open , same item one is 30% size of other, I select the 'scale model' tool (one of the drop down along with move model, rotate model.)
NOT TO BE CONFUSED WITH SETTING A MODEL SCALE, which would be useful but I cannot find that anywhere (Standard).

I have my two items with their ends together and wish to place origin of scaling at that end and make the one same length as the other.

I click to place the origin for the scale and the model grows larger, an orange line goes from my click to a square dot somewhere on its top, not at any sensible location.

I never put that dot there.

FURTHERMORE ITS GONE MASSIVE, I CANT TELL WHICH MODEL I JUST WRECKED, THERE IS NO EDIT UNDO ON RESIZING THE MODEL,  >:(WHY NOT ? I AM FORCED TO CLOSE THE PROJECT, THIS IS NOT ACCEPTABLE, WHY NO EDIT UNDO ON ENLARGING THE MODEL ?

Start again..
I try to find a way of resiting that dot which is the origin, I fail,

I google scale tool, fail, its all about setting a scale such as 1:10 or 1:1 etc....slaps face.
try to find tutorial...fail
click on help at top of screen..select search tab, type scale,,,no topics found.
contents then, find the page showing tools, it just shows the tool, nothing about it at all.

OMG..it shouldnt be this tough, its a scale tool, normally intuitive.

and I am defeated.

How does one use the scale tool, placing the start point of the scale where its needed and then I presume its a drag operation.

Steve003

6

General / Re: Where are the video tutorials on metashape ?

« on: August 13, 2022, 11:25:15 PM »

I cannot fathom out the scale model tool, it sets the origin to some place I dont want.
Thus I need to see how to use it.
I google it, nothing, you tube, nothing, tutorials...I have just googled agisoft tutorials, there is NO RESULT LEADING US TO THESE TUTORIALS, .

I GO ONTO AGISOFT WEBSITE, SELECT TUTORIALS, again nothing takes us to these tutorials.

if it wasnt for your reply I would not see them NEITHER WOULD ANYONE ELSE.

Come on Agisoft , why hide them ? It must be made easy, . user friendly.

when one is stuck one needs help, getting stuck with metashape is bad news when help is tricky to come by.

I bet this situation will still exist in a years time.

Steve003

7

General / help search facility says no topics found even on things that should be there.

« on: August 13, 2022, 11:09:17 PM »

Hi,
 I call up the help from top of Agisoft menu bar, I click the search tab, I type in scale and get nothing found, i type in a word i see on page 1, and get nothing found.

I type in point, no topics found, i click list topics, no topics found.


Aaaaaaaaargh !

I have yet to get it to find things I know are existing in agisoft, such as cloud or dense point cloud or depth or, and so on etc.

how are we supposed to use this help search facility ?

we have a program with no functional help function. Thats not good at all.

Steve003

8

General / Re: Ortho where is 2D grid and a 2D rotate tool ?

« on: August 13, 2022, 10:58:48 PM »

PLEASE ANYONE ??

I AM ALIGNING CHUNKS, WE NEED A 2D ROTATE, KEEPS GOING TUMBLER 3D ON ME.

SURELY THERE IS 2D ROTATION, AN ABILITY TO RESET THAT SPHERE THING SO THE COLOUR LINES GO DOWN ITS MIDDLE AND AROUND ITS EDGE.

IF FOR SOME VERY ODD REASON AGISOFT HAVE DECIDED TO NOT GIVE 2D ROTATE TO A 2D VIEW SOMEONE PLEASE EXPLAIN.

in Rhino the developer  have agents that respond, is there no one able to answer the basics here ?

Steve003

9

General / Re: when using mesh from depth maps deleted areas reappear

« on: August 13, 2022, 10:51:08 PM »

Hi Again,
 recieved a PM, there is no reply to PM option in this system, crazy as that may sound, so unable to rpely.

doing so here,
wetransfer requires entry of an email for recipient, they send the download link to that email address. Its always how its been for me, its what they present you as a sending panel.

PM me again with an email please.

and where is the reply button option to PM's ?

I have typed in the panel under your lettering and hit send message.

Steve003

10

General / Re: when using mesh from depth maps deleted areas reappear

« on: August 13, 2022, 09:19:54 PM »

Hi, PM sent.
Steve003

11

General / Re: when using mesh from depth maps deleted areas reappear

« on: August 13, 2022, 06:51:33 PM »

Hi, I have sent the photos and .psx and also .psz to Agisoft. Wait and see what they say.
I am happy for you to see it if you wish, as it will take ages to hear back from Agisoft and I am 'on this' and needing results now.
So I need to know now what to do next.

I can wetransfer it to you.

does this forum have pm system else I need your email address somehow.

You will see the lighting and image quality was very good, dSLR EOS 70D efl 17-40 lens on 40mm, acclaimed as a very good lens. speedlight 580ex bounce off the ceiling.
background was 'the lounge, somewhat cluttered. No items moved. I am so careful, so to hear that I am poor at capture, I need to know just what was poor, so as to improve.

my reference to the bitty sparse cloud was a quickly thought up term. see attached what I had (after I trim the surroundings and base away)
I didnt think it was at all bad.

Steve003

12

General / Should two chunks see a massive size difference of same object ?

« on: August 13, 2022, 06:32:31 PM »

Hi,
I have several photo sets of the same object, taken at same time, same camera, same focal length, same lighting same everything !
one its on its side, set 1, set 2 its upright.
each has been modelled in metashape 1.8.2 in same day. using same ultra high settings, all from depth maps. (align photos then mesh from depth maps, delete base newspaper then build texture, yes I know texture was a waste of time as merge chunks does that, but I wanted to see it looking nice !)

I try for merge chunk, file append, select chunk, show aligned chunks, with them touching each other, one is 30% the size of the other, is that normal ?

I didnt expect to have to scale up the model so much.

That just doesnt seem right at all. Surely agisoft makes models roughly the same size if they are filling the photo .

Steve003

13

General / one chunk from multiple photo sets tutorial what if background changes though ?

« on: August 13, 2022, 05:58:59 PM »

Hi,
https://agisoft.freshdesk.com/support/solutions/articles/31000155265-how-to-build-a-complete-360-degree-model-of-an-object

great tutorial on using multiple photo sessions of different sides of an object and combining into one chunk for better results, but how is this done if the camera was moved round the object then the object turned upside down and another photo session done, then another of a related part that had broken off.

Steve003

14

General / Agisoft article says make DensePointCloud even if use DepthMaps for Mesh Build.

« on: August 13, 2022, 05:20:21 PM »

Hi,
The tutorial on the basic steps of metashape at:-
https://agisoft.freshdesk.com/support/solutions/articles/31000152092
(see attached)
Has the user doing:-
1. Align Photos
2. Make a Dense Point Cloud, remove points unwanted with delete tools.

3. Build mesh
AFTER THE DENSE POINT CLOUD IS MADE, it says a choice then exists, use either Dense Point Cloud or Depth maps.
Depth maps supports GPU acceleration (GPU being the video processor) and provides better results for minor details.
It then shows the panel and settings for the depth map approach.

Then the confusing bit, it says IF AT THE PREVIOUS STAGE DEPTH MAPS WERE BUILT AND SAVED IN PROJECT, WE RECOMMEND USING THE PARAMETER - ‘REUSE DEPTH MAPS’

Click OK to start the build.

I bring our attention to:-
AFTER THE DENSE POINT CLOUD IS MADE, it says a choice then exists, use either Dense Point Cloud or Depth maps.

As I wish to get better detail, exactly what are the steps I should be following ? It seems one has to make dense point cloud then save depth maps then make mesh using depth maps and choose reuse them !  Where is this option to save depth maps in the Dense Point Cloud build ?

conflicts with advice :- after align photos skip DensePoint Cloud, as its slow and if using depth maps you don’t need the Dense Point Cloud !
I like speed and detail, so why are we being told to go via Dense Point Cloud here ?

I am now puzzled, I have been aligning photos then choosing build mesh use depth maps.

Am I doing wrong ?

it even goes on to say:-
If after the previous stage – Depth maps were built and save in project, we recommend using the parameter – Reuse Depth maps. It shows the Build mesh panel with depth maps selected and reuse depth maps ticked.

so again its saying make the dense point cloud then save the depth maps, I wasn’t aware one had an option to save or not to save the depth maps.

my method by not making Dense point cloud wont be making depth maps and then seeing an option to save them or not it appears.

I AM TOTALLY CONFUSED NOW. just done 9 models my way.

As I wish to get better detail, exactly what are the steps I should be following ?

Steve003

15

General / Re: when using mesh from depth maps deleted areas reappear

« on: August 13, 2022, 01:22:27 AM »

Hi,

In your case you could either adjust the reconstruction region (bounding box) to exclude certain areas from reconstruction.

newspaper has appeared, the region box wont allow non box shapes to be drawn, as the newspaper sees a W shaped item standing on it I cant get that box to delete the paper the item stands on, as it would need to be drawn onto thhe newspaper in the V area.

so I need to edit it out manually

Alternatively, you could delete unwanted points from the sparse cloud, mesh it and use the "import masks from model" to mask the images. Masked areas will not be reconstructed.

the sparse cloud is I presume the somewhat non dense dotty mess after align photos, impossible to see what you are doing trimming up close to the model.
the next option exists with the violet coloured mesh, or with the not so bad image mapped to it.

I do so.

then I follow 'import mesh from model, right clicking on an image, choosing that from the list, apply to all cameras, it does its green bar progress thing, then I click the mask icon above the photos, AND SHOCK HORROR THE W SHAPE ITEM BUT ALSO THE NEWSPAPER IS IN WHITE, its ignored the fact that just the W is the model and showing as such in that mesh violet stage, with all newspaper removed.

WHAT THE HECK IS IT UP TO ?

Steve003