Dear colleagues, I try to test WebODM pipeline to extract building contours from drone images set. Orthophotomap I’ve got is good, but I could not get any info on Surface Model and Terrain Model pages, according to https://docs.opendronemap.org/tutorials.html#creating-digital-elevation-models tutorial.
I upload my test dataset here: https://drive.google.com/file/d/1_1DnPVe4HVqvZntCGlaacVSuq9ppss7e/view?usp=sharing
Dataset consists of 21 12mpix images shot vertically from 300m height.
Images have no GPS data.
I processed it with these params:
orthophoto-resolution: 0.05, dtm: true, dem-resolution: 0.05, ignore-gsd: true, dsm: true, smrf-threshold: 0.3
Orthophoto looks good, but instead of Surface Model and Terrain Model I see only black box and “Bad Request” error message.
On 3D model page I see valid 3D model, with contours of houses - so I guess dataset should have enough information to calculate any kind of valid DTM/DSM - but tweaking of params mentioned in tutorial did not help me.
Hi Copterspace,
I tried the dataset with default parameters, but ended with code 1.
I noticed images were not taken in multiple flight lines, but seems somehow randomly taken.
Apparently there is no link between IMG_20170101_010402.jpg and IMG_20170101_010551.jpg (if we are trying to follow a sequence) and maybe this is causing problems.
can I have the coordinates for this area?
Hi, Israelbar. Thank you for rely!
The area is 53.643533, 50.628699
I removed images between IMG_20170101_010402.jpg and IMG_20170101_010545.jpg to make dataset size smaller for test. This is the reason of bigger shift between IMG_20170101_010402.jpg and IMG_20170101_010545.jpg.
I ran WebODM with these params, on Ubuntu 8Gb RAM:
orthophoto-resolution: 0.05, dtm: true, dem-resolution: 0.05, ignore-gsd: true, dsm: true, smrf-threshold: 0.3
I had no troubles with errors on this dataset (although, I did have error code 1 on bigger datasets, seemed it’s because of my 8Gb RAM limit, I resolved it with max-concurrency= 2)
Actually, I could not ever get DSM with WebODM, from any dataset, although WebODM renders 3D model.
I compared WebODM to Pix4D, Pix4D renders DSM on all same datasets I tried with no troubles…