Topics

1

General / Python script can't load image GPS info in EXIF?

« on: July 04, 2015, 11:35:33 PM »

Hi all,

I just realized when I used Python script to do the batch processing, the image GPS info in EXIF doesn't loaded in PhotoScan Pro. But when I do manual "Add Photos", I can see images' GPS info in Ground Control panel. I am using PhotoScan Pro 1.0.4 for a number of reasons.

Do you guys think this is something wrong with my code or just the version issue.

Thanks!
Nan

2

General / GPU processing during the modeling and settings

« on: July 08, 2014, 01:04:37 AM »

Hi all,
I am curious about how much the GPU is involved in the modeling process. I can see during the dense point cloud step the GPU is used for computing. But during the mesh generation which is the most heavy computing process, I didn't see a lot of GPU involvement. So I am curious about during what the step(s) GPU is really used for processing?

And also what should I set up the OpenCL appropriately to optimize the speed? My workstation has 12 CPU cores, and Quadro 4000 has 8 cores based on PhotoScan OpenCL interface. Based on the OpenCL interface suggestion, deactivate one CPU core (using 11 of them) will use all Quadro 4000 8 cores?

Thanks,

3

Python and Java API / Python Workflow is getting slower after a series looping runs

« on: June 25, 2014, 08:09:19 PM »

Hi,

I created a Python workflow to loop through the different folders for making a series models.

As I can see the first one or two Photoscan run is fairly fast, but PhotoScan get slower and slower. And I can tell the mesh creating step is really taking a long time not processing but "waiting" when it's already showing mesh creating is 100% finished.

In my python workflow, I did remove chunks after each model made, and also did garbage collector run. But it seems not work. The only way can speed PhotoScan is closing it and reopen PhotoScan, then the process will be back to fast again.

Any thoughts or inputs are really appreciated.

4

General / PhotoScan Pro is getting slower with Python workflow

« on: June 25, 2014, 08:04:54 PM »

Hi,

I created a Python workflow to loop through my different folders for making a series models.

As I can see the first one or two Python run is fairly fast, but PhotoScan get slower and slower. And I can tell the mesh creating step is really taking a long time not processing but "waiting" when it's showing mesh creating is 100% finished.

In my python workflow, I did remove chunks after each model made, and also did garbage collector run. But it seems not work. The only way can speed PhotoScan is closing it and reopen PhotoScan, then the process will be back to fast again.

Any thoughts or inputs are really appreciated.

5

General / Any possibility of using Leap Motion to control Agisoft

« on: February 19, 2014, 08:55:01 PM »

Hi everyone,

I had this crazy idea couple of days ago, and I figured I should post here to ask.

I will give a big presentation at a conference about our project of using Agisoft and will do some cool demos. I want to make my presentation even cooler, so I thought about using Leap Motion sensor.

I bought Leap Motion since it was first released, but I didn't really use it for work than fun stuff. So I thought is there any possible that Agisoft can talk to Leap Motion sensor that we can make the 3D model fly-over demo very cool?? We can zoom in and zoom out, or do model rotation, like Tony Stark with Jarvis?

I hope this is not too crazy

Nan

6

General / Nvidia Tesla K20 Graphic card vs Geforce Series

« on: February 07, 2014, 09:06:35 PM »

Hi everyone,

We are going to put together a workstation for Agisoft PhotoScan Pro processing. We were looking at Nvidia Tesla K20 card. But I found a 3-yr old thread talking about this very topic. But that was about Tesla C2075.

And I also found Alexey's response as following:
"PhotoScan uses single precision arithmetics in the GPU processing part (actually the most time consuming calculations are done even using integer arithmetics). So the double precision performance limitations of the consumer video cards doesn't affect the processing speed at all. Consumer GeForce video cards should be as fast as professional (Quadro or Tesla) ones for PhotoScan."

Question 1: Does the new Photoscan Pro 1.0 version still use single precision arithmetic for the GPU processing?

Question 2: I can't find any Geforece GTX series specs on peak single precision floating point performance. But the Tesla C2075 is 1.03 Tflops, and the K20 is 3.52 Tflops, and K20 is significantly faster than C2075. So will K20 be faster than consumer level Geforce GTX series?

Thanks!
Nan

7

Python and Java API / Python script on precalibrated camera calibration parameters

« on: November 15, 2013, 05:56:23 PM »

Hi all,

We finally found a good set of camera calibration parameters for all of our cameras. Now I want to implement this process into my Python pipeline so we can make 3D models completely automatically.

Searching around, I didn't find a good example on how to write the script that the parameters can be input before aligning the images together.

And if I relate Python with PhotoScan Pro interface, the "Type" under "Initial" tap of Camera Calibration interface must be "Precalibrated", and the "Fix Calibration" needs to be selected as well.

Thank you all very much for any of your input.
Nan

8

General / The High-end workstation or server for Agisoft PhotoScan Pro?

« on: November 14, 2013, 07:50:03 PM »

Hi guys,

We got enough money to get a high-end workstation or server for processing our 3D model. We are looking at some high-end Dell server that we can put multiple processors (CUPs) in there and each processor can have 8+ cores. OS will be Windows Server 2008 or 2012

So I'm wondering can PhotoScan Pro really utilize that computer power and be compatible with Windows Server OS?

If not, what's the best solution (configuration) for us to have a high-end workstation or server that Agisoft can be run fast?

Nan

9

General / Questions about Camera XYZ coordinates and world coordinates

« on: October 18, 2013, 06:47:04 PM »

Hi all,

The more I used Agisoft PhotoScan Pro, the less I feel like I know. So my question is what's the unit of the world coordinate system of one 3D model if I don't have GPS/georeference information? Does the world coordinate system is related image pixel? If so, what's the converter factor between those two.

And also when I export the camera information, is the XYZ values are for the principal points or focal points?

Thanks in advance,
Nan

10

Python and Java API / Python script for exporting model??

« on: September 03, 2013, 05:35:41 PM »

Hi all,

I want to add a export model routine in my workflow to export model as a ply file with normals and colors. I didn't find there is such a routine for Python script. But I did find "save". There is export_normals, but there is no export vertex colors for ply file.

When the ply file is exported, I don't want choose "Binary Encoding" option.

How can I do this in the PhotoScan Pro??

Thanks in advance!
Nan

11

General / specify the viewing angle and zoom-in level for time-series models?

« on: July 01, 2013, 12:34:24 AM »

Hi,

We are having many cameras that are stationary to shoot plants over time. Both cameras and plants were never moved during this period of time. Then we built a series of time-series plants model to detect plant leaves movement.

So is there any way I can specify the viewing angle and zoom-in level so every time I open a model that I can make sure I am looking at those plants at the same angle and the same zoom-in level?

Thanks,
Nan

12

Python and Java API / Issue of Python scrip for exporting Orthophoto

« on: June 11, 2013, 07:20:59 PM »

Hi,

I am building a Python workflow for making models automatically. When I tried to add exportOrthopho in my code, there is a problem. It seems PhotoScan Pro was trying to build a orthophoto, but the info in PhotoScan Pro Console showed "Mosaic 0x0", and never saved the orthophoto.

My code is:
doc.activeChunk.exportOrthophoto(Path+"ortho.tif", format="tif", blending="average", blockw=4096, blockh=4096, write_kml=False, write_world=False)

Does anyone know what's wrong with my code?

And I also want to save the model as "From bottom XY" in Projection Plane, how can I set this up in my code?

Thanks a lot!
Nan

13

General / Does Photoscan Pro minimize shadows?

« on: May 20, 2013, 08:23:09 PM »

Hi everyone,

We are taking photos with cameras for our research plant plots and trying to used Photoscan Pro to build 3D models of the plants. Since the cameras are mounted on the camera frame, during the shiny day there are some shadows of camera frame in some of the photos.

But after building the model and exporting orthophoto, the shadows are either gone or minimized in the orthophoto. So I am curious about if PhotoScan Pro is taking out of shadows by accident or on purpose.

What I should also mention is we have a lot of overlap among photos, so the same spot can have shadow in one photo and another photo of the same spot will not have shadow.

I used "mosaic" option when I did the orthophoto output.

Thanks!
Nan

14

General / recommended books on Photogrammetry techniques Photoscan might be referenced?

« on: February 26, 2013, 11:18:44 PM »

Hi There,

Since my lab bought Agisoft PhotoScan Pro, our research and projects are heavily replied on Photoscan Pro now. The more I used PhotoScan pro for my projects, the more I realized I lack some fundamental knowledge about  3D Photogrammetry and DEM modeling.

So I am wondering are there any books I can buy on 3D Photogrammetry, DEM modeling techniques that PhotoScan Pro might use as reference?

Thanks in advanced!!

Nan

15

General / Possible to segment/classify texture and bring it back on the mesh?

« on: February 24, 2013, 01:30:29 AM »

I am wondering is there any function in PhotoScan Pro that I can segment/classify the texture and bring it back to Photoscan Pro and lay the segmented texture on the 3D mesh?

Basically, we used the images to build a 3D model, and then we want to segment/classify the images (texture) to get rid of everything except plants. Then we want to see the segmented plants on the 3D mesh.

Thanks a bunch for any input!
Nan