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Messages - school

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Feature Requests / Re: Support for push-broom satellite images
« on: July 01, 2020, 06:42:14 PM »

This is probably a dumb question: but if I am trying to acquire Pleides tri-stereo images for processing in Metashape, what are the imagery requirements besides having the RPC data? For instance, must the imagery contain the full swath width of the sensor?


Bug Reports / Re: Continual crashing on build dense cloud
« on: December 13, 2018, 12:26:21 AM »
I gathered as much. And so I ran memtest86, but did not get any errors.

I did submit a report on the last crash which is the first time the crash reporter has popped up for me. I didnt have a thread to link to yet here, so I just included my forum name, "school", and my gmail address, as keywords.

Bug Reports / Continual crashing on build dense cloud
« on: December 12, 2018, 10:39:28 PM »
Photoscan 1.4.4 on a custom built machine (Ryzen 7 1800x, 32g ram, 2x 1050ti GPU):

For a while I have had an occasional crash on the build dense cloud step. Now it seems to happen nearly constantly. I have enabled logging and it always happens at:
2018-12-12 14:17:58 filtering depth maps... .

In trying to find resolutions for this by searching the forum: I have ensured that my GPUs have the latest driver. I ran memtest86 with no errors. I have the latest version of pscan.

I cant get a dense cloud to build in this one current project on any resolution setting using an image set I have processed successfully. previously, on my laptop.

Any help would be greatly appreciated. The software usually quits quietly, with no error message, so it hasnt been possible to submit a report previously. The last time it failed, though, it did ask if I wanted to send a crash report. So I did and I included my email address and referenced my forum name "school".

General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: November 13, 2017, 06:55:14 PM »
Great. Thanks!

General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: November 13, 2017, 02:42:52 AM »

Thanks very much! I was very close but was missing just one thing:

Note: You need to apply masks for each calibration image and for each band! To switch between bands use “Set Master Channel” in the context menu after right-clicking on the chunk's label in the Workspace pane

Now I have sensitivity being adjusted for each band and am reprocessing.


General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: November 10, 2017, 05:45:05 PM »
Hi Alexey,

I have a question regarding the MicaSense RedEdge camera radiometric calibration.

I have loaded photos, chosen to create multispectral, created manually the Calibration images folder and loaded the calibration panel images, masked them, but I am not sure that Photoscan is actually using the calibration images.

I have read the EXIF data and from the MicaSense I have got the reflectance information about the panel for every band.

I used that reflectance information in Calibrate Sensitivity setting as albedo (perhaps I made mistake here), after that sensitivity is automatically set in Camera Calibration/Bands and for every band, it is above 1, while black levels are set to 0.

The results I am getting are bad. After entering the albedo, all images look like overexposed, and the model is white. :-\

Without radiometric calibration, it creates a good model.

Any suggestions?

I, too, am trying to figure out how to use the calibration panel images and would love some help.

Is it possible to get a quick list of steps?

I added a set of 4 images of the calibration panel to an existing project generated with a sequoia. They are automatically added to a "calibration images" folder in the cameras folder in the workspace pane. I added them as a
"multispectral camera from files as band".

I masked out everything except the panel in the image.

I run "calibrate sensitivity" and can see in the "camera calibration" window, under the "bands" tab that sensitivity for the green channel has changed, "normalize band sensitivity" has been checked, and the other bands remain the same (0 and 1 for Black level and sensitivity). Doing anything further gives wonky results.

What should I be doing differently??


General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: October 16, 2017, 09:48:46 PM »
Hi Alexey,

There was nothing surprising with aligning and dense cloud building in 1.4. Let me switch over to 1.3.4 and see what happens.

The only thing I did differently in this image set compared to the last several image sets I processed in 1.4 was that I used masks.

I will send the images to you if there is no problem in 1.3.4.


General / Re: Agisoft PhotoScan 1.4.0 pre-release
« on: October 16, 2017, 09:17:44 PM »
Im using 1.4 at the moment, and when trying to "Build Orthomosaic" with a particular image set, it fails with "TiffReadTile: unexpected error". This probably isnt a 1.4 specific problem, but could not find any posts about this on the forum, so figured it might be a new thing? Any clue what would cause this error? Thanks!

Console says:
2017-10-16 14:13:47 boundaries extracted in 0.053 sec
2017-10-16 14:13:47 region overflow: reading [1071, -12194] - [1080, -12185] from 17x13 image
2017-10-16 14:13:47 libtiff error: 1024: Col out of range, max 16
2017-10-16 14:13:47 region overflow: reading [1071, -12194] - [1080, -12185] from 18x19 image
2017-10-16 14:13:47 libtiff error: 1024: Col out of range, max 17
2017-10-16 14:13:47 Finished processing in 70.297 sec (exit code 0)
2017-10-16 14:13:47 Error: TIFFReadTile: unexpected error

General / Re: Flir Vue Pro R?
« on: November 08, 2016, 10:08:32 PM »
Thanks so much! I have now gotten a set of these images to process successfully with correctly placed GCPs because I can see the images.

General / Re: Flir Vue Pro R?
« on: October 25, 2016, 07:23:35 PM »
Thanks Gall,

Yes, they are supposed to be 14 bit images. When I make it 800% I can make out the scene in images with high contrast (so when the camera was on the ground and pointed at the horizon), but in images with lower contrast (when the drone is in the air looking at the ground) I get almost no contrast, so still not enough to be able to pick out my GCPs. This is frustrating.

General / Re: Flir Vue Pro R?
« on: October 22, 2016, 12:29:23 AM »
Hi Alex,

I just tried that and it didnt really work. When I adjust the brightness all of the images get lighter or darker, but there is still no contrast. In some of the images that have the largest range of values, I can maybe make out the horizon and a building, but in most it is all a uniform grey. The value of most pixels is between something like 6800 and 7999.

General / Flir Vue Pro R?
« on: October 21, 2016, 05:19:20 PM »
When I load a set of radiometric thermal .tif images from a FLIR Vue Pro R, they are all displayed as black. Surprisingly, I can run the alignment, dense cloud, mesh, and orthophoto generation and end up with a real result which I can then process with the raster calculator to see the IR data, but since I can't see any details in the images or mesh (everything is black), I can't find my GCPs to georeference the model.

Is there a way to get Photoscan to display these images?


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