Generate Artificial CT
The Generate Artificial CT app creates a multi-material artificial CT based on the voxel geometry loaded in GeoDict.
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Modules needed to run this GeoApp:
GrainGeo or FiberGeo, PoroDict
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Click Edit to open the Generate Artificial CT parameter dialog.
General Parameters
Enter a Result File Name.
Use the Color values table to define the gray values for each material. The base gray value is the mean gray value for the respective material in the generated gray value image. Define the gradient intensity which controls if the borders of the material will have lighter or darker gray values. The gradient half distance defines the thickness of these border gradients.
Define the Signal to Noise Ratio and the Blur Filter: Sigma.
Decide if Noise should be added and enter a Noise Grain Size if activated.
The Normalization Mode can either be according to MinMax gray values or set to 0-255.
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Note! The Generate Artificial CT app always creates an 8-bit image dataset (gray values between 0 and 255). If you want to create an 16-bit image dataset, create the 8-bit version first and then use the Sample to 8 / 16 bit functionality in ImportGeo-Vol.
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Add Artifacts
Five different types of artifacts can be added to the artificial CT images:
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Results
After the CT-generation is finished, the artificial CT-scan is loaded as volume field in the visualization area and the result file is loaded in the Result Viewer. From the Data Visualization tab the artificial CT-scan, the used distance map and the noise field can be loaded.
