Topics

1

Python and Java API / Cannot change DEM resolution after merging chunks

« on: May 20, 2020, 10:24:13 PM »

As the title suggests, after aligning and merging 2 chunks, I am trying to generate a DEM using the dense cloud, with the buildDem function. I have specified the resolution I need, but the function tries to generate a very high resolution DEM which is very large and takes forever to compute. For reference, I only used chunks with 4 images each (just for testing my workflow) and the DEM will process for hours on a medium-powered pc.

I don't have the same issue when I am creating the DEMs for each chunk separately. In the image I have attached you can see both the resolution I have defined (0.042 m) and the resolution it wants to create (0.003m).

How can I solve this issue?

2

Python and Java API / Error while export as BigTIFF

« on: May 12, 2020, 03:31:00 PM »

I have set up a complete processing pipeline using the Python API (v 1.6.2) and I run into a problem when I try to export big raster using the BigTIFF compression. I am using the following bit of code for the orthomosaic export:

Code: [Select]

compression = mts.ImageCompression
compression.tiff_big = True  # Enable BigTiff compression. Found in another post in the forum

chunk.exportRaster(output_tifname, projection=projection, source_data=mts.OrthomosaicData, image_compression=compression, image_format=mts.ImageFormat.ImageFormatTIFF)
It will always return the following error:

Code: [Select]

TypeError: invalid value type
I have traced it to the

Code: [Select]

image_compression argument, by eliminating all other possible error sources. Also, when I use the

Code: [Select]

split_in_blocks option, the export works and exports the individual blocks.

What have I done wrong?

3

Python and Java API / Calibration Code

« on: May 25, 2016, 09:42:45 PM »

Where can I find the code which is used in the Calibration command?

4

Python and Java API / Python Script to calculate platform speed

« on: May 17, 2016, 03:51:11 PM »

Hello everyone,

I am new to python so I need any help provided to achieve the following. I want to create and make use of a script that after the image alignment and markers' placement, will be able to calculate the platform's speed between two consecutive frames by using the estimated camera locations. I would use the UAV's GPS antenna, alas it is custom-made and cannot produce geolocated images. As I think about it, it should be able to calculate the vector distance between two consecutive frames and then divide it with the time between the two captures -by a known, fixed timer setting by the camera, e.g. 5 secs-.

Thank you very much in advance!

5

General / Question on distortion correction

« on: December 06, 2015, 04:58:26 PM »

Hello everyone,

I wanted to ask if lens distortion is automatically corrected from the camera parameters that are computed during the process of the creation of the 3D models.

Thank you very much in advance!

6

General / Network Processing Setup

« on: August 09, 2015, 02:32:53 PM »

Hello everyone,

I am fairly new to Agisoft, but its capabilities have really got me hanging after a project is completed. What I am trying to do is to setup cluster processing because I manage chunks with a number of photographs varying from 1000-10000 and even if the computer I use is really powerful I could benefit from cluster processing. I looked into the manual, but it didn't really help. Is there anyone that knows of a manual with photos and stuff? Or someone that can guide me through the process? I looked thoroughly both in the internet and in the forum topics, but couldn't find anything.

Thank you everyone in advance!