Comments (5)
Hi! I am using the same tool right now. How can i come in contact with you to discuss choices of parameters and overall results. Reply would be greatly appreciated.
from whitebox-tools.
Hi! I am using the same tool right now. How can i come in contact with you to discuss choices of parameters and overall results. Reply would be greatly appreciated.
I don't believe there's a standardized approach to choosing parameters - it's likely that the choice of window size needs to be tuned to each particular case for optimal results. Search window radius is related to crown radius in some ways so in the example I provided above, the equation I used was derived by plotting crown radius vs tree height of all trees in the Tallo database located within Canada. The results were not great though.
from whitebox-tools.
Isn't your min and max search radius around 0.5 m and 5 m respectively? Maybe that's why you get two very close points (you said around 0.3 m). Maybe try plotting identified points and raw LIDAR data to see what is really going on. Today i discovered that for high trees this function is doing okay but in my case the problem is low vegetation. My LIDAR data is also not very well classified.
from whitebox-tools.
To add: for higher trees I get okay identification meaning that there are no "double trees" like in your case.
from whitebox-tools.
Have you attempted to use the data I provided? Looking at one case where I'm detecting two tree tops about 0.13 m apart both with a height of 22.87 m, I'm guessing that the reason for the doubling of tree tops is because the heights are identical. If the algorithm defines a local maximum as a point that has a height greater than or equal to the points around it, this could explain the issue. In this case, the fix could be as simple as changing the "greater than or equal" to just "greater than". I can't verify this because the code is not available though.
from whitebox-tools.
Related Issues (20)
- WhiteboxTools manual needs updating for the Geomorphons tool HOT 1
- Compress raster default value incorrectly labelled? HOT 2
- Error reading LAZ file HOT 1
- Isochrone along direction map of watershed HOT 2
- ListUniqueValuesRaster HOT 3
- Wrong results of DirectDecorrelationStretch
- ClipLidarToPolygon is modifying retained point data HOT 1
- Geomorphons - edge effects and difficulties in geographic coordinates
- WhiteboxWorkflows: kernel dies if file not found
- whitebox.Runner() urllib.error.URLError: <urlopen error unknown url type: https> HOT 1
- whitebox_tools 'Unrecognized tool name NormalizeLidar' HOT 16
- Whitebox-Worflows: Erroneous results when using raster files in NAD83 projection HOT 1
- DTM outputs have a shift between tiles HOT 3
- lidar_digital_surface_model extent changed HOT 1
- Feature Requests: lidar_digital_surface_model HOT 2
- FlowAccumulationFullWorkflow gracefully exits without writing all 3 results
- documentation of PercentElevRange
- [feature request] add option to use D-infinity pointer grid in ElevationAboveStream
- "extract_by_attribute" tool missing from "whitebox_tools.py" (?) HOT 3
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from whitebox-tools.