This service was born out of a need to convert geotiff digital elevation models into mesh surfaces for importation in geological software. Most online converters are not equipped to deal with such large datasets and will not give you the right output. Similarly, QGIS tools tend to bug down because there is no downsampling. Therefore, I created this service which lets you import your geotiff, import a boundary of the zone of interest and also select a downsampling factor to reduce the output file size. I hope you will find this service helpful and I remain available at all times to give you the personalized service you need.
Sincerely,
Simon Loiselle
You will be redirect to the DigitalGeo application where the code is hosted.
Image set 1: On the left is the hillshade rendering of the Bryce Canyon DEM as seen in QGIS (file size =119Mb). On the right is the 3D model of the same area following conversion without downsampling (file size = 4.9Gb). Mesh files are notoriously big hence why it is hard to find a good file converter and why most online converters are not adapted to this purpose. We usually recommend at least 4x downsampling. At 8x downsampling, your output file should be in the same order of magnitude as the original file.
Credits: Dataset is Bryce Canyon from https://shadedrelief.com/SampleElevationModels/ Tom Patterson, US National Park Service (retired). 3D images are from the output of my program as viewed in Geoscience Analyst(™)
Image set 2: On the left, no downsampling of the orginal dataset (file size = 4.9Gb). On the right, exact same view but with 8x_downsample (file size = 84 Mb)
Credits: Dataset is Bryce Canyon from https://shadedrelief.com/SampleElevationModels/ Tom Patterson, US National Park Service (retired). 3D images are from the output of my program as viewed in Geoscience Analyst(™)
If you have any questions please do not hesitate to contact me by email.
email simon@harfangweb.com