Forum

Recent Posts

Pages: 1 ... 4 5 [6] 7 8 ... 10
51
Bug Reports / Transform object doesn't work
« Last post by NORIM on August 06, 2022, 01:52:16 PM »
Hi I created model from aerial photos and I would like to cerate ortophoto from mesh. Spare cloud is rotated and X, Y and Z axis are bed. So I did Model/Transform Object/ Reset Transform because other options were greyed next I did Model/Transform Object/Rotate Object and set model correctly...after that I tried to "Update Transform" but after that model is again in bed position. I am using 1.8.3 Metashape Professional version...
52
General / Re: HDD vs SSD - data processing time
« Last post by johnnokomis on August 06, 2022, 03:03:52 AM »
In 2022 I can't see using a HDD for anything other than archiving previously used media or data. If your C Drive (OS and all programs) isn't installed on a SSD, either sata or NMVE, then you need to reevaluate your entire rig and do some research too. 
53
Python and Java API / Re: Script fails to create depth maps, errors out
« Last post by Bolli on August 05, 2022, 09:34:04 PM »
Hi Alexey and all,
I wanted to bring this issue back up. The script that this was apart of seems to work fine when it works. But occasionally It'll fail in the middle of the depth maps creation (or point matching in alignment stage) with the "Can't replace file or Directory" error (Figure 1). I navigate to the referenced file path and the file is not present (Figure 2). I'm just wondering what would cause this, Metashape or the file system being unstable?

Build Information:
2022-08-05 14:32:31 Agisoft Metashape Professional Version: 1.8.4 build 14671 (64 bit)
2022-08-05 14:32:31 Platform: Windows
2022-08-05 14:32:31 CPU: Intel(R) Xeon(R) CPU E5-2690 v4 @ 2.60GHz (server)
2022-08-05 14:32:31 CPU family: 6 model: 79 signature: 406F1h
2022-08-05 14:32:31 RAM: 448.0 GB
2022-08-05 14:32:31 OpenGL Vendor: NVIDIA Corporation
2022-08-05 14:32:31 OpenGL Renderer: Tesla M60/PCIe/SSE2
2022-08-05 14:32:31 OpenGL Version: 4.6.0 NVIDIA 472.39
2022-08-05 14:32:31 Maximum Texture Size: 16384
2022-08-05 14:32:31 Quad Buffered Stereo: not enabled
2022-08-05 14:32:31 ARB_vertex_buffer_object: supported
2022-08-05 14:32:31 ARB_texture_non_power_of_two: supported
54
General / Lens Distortion - Profile curve
« Last post by Hugh on August 05, 2022, 07:27:17 PM »
Hi,

I'm trying to understand how the distortion plot is calculated in the Camera Calibration window.

I've got, for example, the attached image.

In this, I'd expect to be able to pass in a pixel radius of 2000 and get a result of just under 12 pixels.

The details of this calibration are:

Code: [Select]
w : 3840
h : 2160
f : 7617.05664
k1 : 0.052014
k2 : 0.689641
k3 : -3.7671
k4 : 0
cx : 0
cy : 0
p1 : -0.00148237
p2 : -0.0018401
b1 : 0
b2 : 0

The corner of my image would be considered 0.5, 0.5, which is 1920, 1080 from the center. So the pixel distance to the corner is 2202.907. I'm going to use this point, and expect something around or just above 12.

r2 = r*r
r4 = r*r*r*r
etc...

I've used the formulae from Appendix C of the Metashape Pro documentation, on Frame cameras.

Code: [Select]
x_prime = (x * (1 + k1*r2 + k2*r4 + k3*r6)) + (p1 * (r2 + (2 * x2))) + (2 * p2 * x * y) = 0.36136245
y_prime = (y * (1 + k1*r2 + k2*r4 + k3*r6)) + (p2 * (r2 + (2 * y2))) + (2 * p1 * x * y) = 0.36118359

u = w * 0.5 + cx + x_prime * f + x_prime * b1 + x_prime * b2 = 4672.52
v = h * 0.5 + cy + y_prime * f = 3831.16

This position in u,v is much more than 12 pixels away from the corner, so I'm not sure where my maths is going wrong here.

I tried doing this with p1 and p2 set to 0, and I got a similar result:

Code: [Select]
x_prime = (x * (1 + k1*r2 + k2*r4 + k3*r6)) + (p1 * (r2 + (2 * x2))) + (2 * p2 * x * y) = 0.363764875
y_prime = (y * (1 + k1*r2 + k2*r4 + k3*r6)) + (p2 * (r2 + (2 * y2))) + (2 * p1 * x * y) = 0.363764875

u = w * 0.5 + cx + x_prime * f + x_prime * b1 + x_prime * b2 = 4690.82
v = h * 0.5 + cy + y_prime * f = 3850.82


Could someone help me as to where I'm going wrong here? I'd like to be able to calculate the same results as the graph is showing.

Thanks
55
General / Re: HDD vs SSD - data processing time
« Last post by PolarNick on August 05, 2022, 10:39:08 AM »
First of all - it is not important where Metashape itself is installed.

It is important where photos and projects files are located. So photos importing was faster thanks to photos located on SSD - Metashape was able to read them one by one much faster than from HDD. And yes, SSD for data storage should lead to faster processing.
56
General / Re: Problems aligning big Dataset in one aligment
« Last post by PolarNick on August 05, 2022, 10:31:36 AM »
What parameters did you use for alignment in one processing? (you can just click on Tie Points of that attempt and make a screenshot - parameters of alignment will be shown in bottom left corner)
57
General / Re: Possible to group markers?
« Last post by smiller on August 05, 2022, 09:36:55 AM »
Yes, you can simply right-click on the marker > Move Markers... > New Group, or select the group. Then, when they ar ein their groups, you can right-click on the groups to enable or disable them in groups.
58
General / Re: Problems aligning big Dataset in one aligment
« Last post by GGR on August 05, 2022, 09:35:38 AM »
You can try to place markers and align your chunks with those. Or to register your clouds with the ICP tool implanted on CloudCompare.
59
General / Re: Hiding camera groups
« Last post by GGR on August 05, 2022, 09:27:28 AM »
What about moving these to an other chunk ?
60
General / Re: Camera recommendations still up-to-date?
« Last post by Bzuco on August 04, 2022, 06:02:24 PM »
In case of turntable I would check minimum lens focus distance.
EOS R is full frame where crop factor is 1.0.
A6000 is APS-C chip with crop factor 1.5, which results in narrower field of view.
With the correct combination of camera(crop factor) and lens you will be able to take photos from the closest possible distance => smaller object will cover larger area on photo...
Someone with better experiences with lenses would give you more accurate answer.  ;)

EDIT: overall, sharper lens with higher focus range will make photogrammetry better than just camera with some extra Mpix sensor or slightly better noise @ISO100
Pages: 1 ... 4 5 [6] 7 8 ... 10