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Transcript of How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de...
![Page 1: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/1.jpg)
How to Visualize in OpendTect
Layers and Transparency, Volume Rendering & Iso surfaces
Geert de Bruin
![Page 2: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/2.jpg)
Introduction
OpendTect is a powerful tool for attribute analysis and advanced object detection
Visualizing the results is almost as important as the results themselves, therefore OpendTect has several advanced visualization options
This presentation helps you to get best out of OpendTect: layers, transparency, color-bars, volume rendering and iso surfaces
![Page 3: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/3.jpg)
Overview
Working with attribute layers and transparency
Visualizing data in 3D: Volume rendering
Iso-surfaces (prototype)
![Page 4: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/4.jpg)
Working with attribute layers
In OpendTect one element (inline, crossline, time-slice, horizon, random-line) can have multiple attribute displays or layersThe attribute on layer 2 is
masking the seismic data on layer 1. Therefore we make the second layer (partially) transparent
Layer 1: Seismic data
Layer 2: Attribute
1) Uniform transparency2) Part transparent /
part opaque
![Page 5: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/5.jpg)
Part transparent / part opaque
The concept is to make a certain value-domain completely transparent (low attribute values), while keeping the other values opaque (high attribute values).
![Page 6: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/6.jpg)
Workflow in OpendTect
1) Display seismic data
2) Right click on the element and select “add attribute”
![Page 7: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/7.jpg)
Workflow in OpendTect
Tip: Shift + Arrow Up/Down To changes the order
1) Display seismic data
2) Right click on the element and select “add attribute”
3) Display an attribute on the new layer
4) Select the layer and choose the color-bar “chimney”
![Page 8: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/8.jpg)
Workflow in OpendTect
Right click on the color-bar to flip or edit it
![Page 9: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/9.jpg)
http://www2.opendtect.org/rel/html/index.html
Consult OpendTect user-documentation
![Page 10: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/10.jpg)
Uniform transparency
Uniform transparency is equally simple to perform
![Page 11: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/11.jpg)
Uniform transparency
Layer 1 Seismic Data
![Page 12: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/12.jpg)
Uniform transparency
Layer 1 Seismic Data
Layer 2 Acoustic impedance
![Page 13: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/13.jpg)
Uniform transparency
![Page 14: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/14.jpg)
Uniform transparency
![Page 15: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/15.jpg)
Overview
Working with attribute layers and transparency
Visualizing data in 3D: Volume rendering
Iso-surfaces (prototype)
![Page 16: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/16.jpg)
Visualizing data in 3D: Volume rendering
Display an attribute in a volume viewer. Make a certain value-domain completely transparent (low attribute values), while keeping the other values opaque (high attribute values).
![Page 17: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/17.jpg)
Volume rendering
1) Add a volume and position it
![Page 18: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/18.jpg)
1) Add a volume and position it
2) Load the attribute
3) Deselect “inline crossline and time” & select “volren”
![Page 19: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/19.jpg)
1) Add a volume and position it
2) Load the attribute
3) Deselect “inline crossline and time” & select “volren”
4) Choose a color-bar with transparency (Chimney)
![Page 20: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/20.jpg)
Overview
Working with attribute layers and transparency
Visualizing data in 3D: Volume rendering
Iso-surfaces (prototype)
![Page 21: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/21.jpg)
Iso surface
1) Add a volume and load the attribute data
2) Right click in the volume item in the tree and select Add> Iso surface
![Page 22: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/22.jpg)
The color of the isosurface corresponds to the color in the color bar at the value of the isosurface (ignoring transparency)
![Page 23: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/23.jpg)
Changing the iso value will thus result in a different color and shape
![Page 24: How to Visualize in OpendTect Layers and Transparency, Volume Rendering & Iso surfaces Geert de Bruin.](https://reader035.fdocuments.in/reader035/viewer/2022081515/56649cef5503460f949bd5e9/html5/thumbnails/24.jpg)
Iso surface: ChimneyCube