[Amira 3D, Avizo 3D]
Prerequisites
A Digital Volume Correlation (DVC) extension is required for the analysis and visualization methods presented in this article.
The displacement and strain maps must have already been generated using either the DVC Local Approach or the DVC Global Approach before applying the visualization methods described below.
Process
Reference Image resulting from each method described in this article.
- Method 1: Display the strain results as a spreadsheet with each coordinate (far-right viewer in Reference Image above)
1. Right-click the generated strain data.
2. Create a Convert DVC Output to Spreadsheet module.
3. Click Apply.
4. A table containing the strain values for each coordinate is displayed automatically; otherwise, it can be shown by clicking the Table button.
Note: The spreadsheet can also be exported to a CSV file for use with external software.
- Method 2: Display the strain result as a colored grid (top-right viewer in the reference image above)
1. Right-click the generated strain data.
2. Create an Extract Scalar Component module.
3. Select the component to extract. In this example, Ezz is used. Then, press Apply.
4. Select the newly generated scalar field, whose name ends with Ezz or whichever component you have extracted.
5. Change the colormap to physics.icol.
6. Click Create legend.
7. Right-click the scalar field and create a Grid View module.
8. Set Draw Style to Solid Outline.
- Method 3: Display a mesh of the data colored with the strain results (bottom-right viewer in the reference image above)
1. Right-click the generated strain data.
2. Create an Extract Scalar Component module.
3. Select the component to extract. In this example, Ezz is used. Then, click Apply.
4. Right-click the scalar field and create a Convert Scalar DVC Output to Volume module.
5. Set the X dimension to that of the original dataset's size on the X axis. The other dimensions are adjusted automatically. Click Apply.
6. Segment the original grayscale data (recommended method varies according to the data).
7. Right-click the labeled data and create a Generate Surface module. Click Apply.
8. Right-click the new surface data and create a Surface View module.
9. Expand the Data row in the Surface View properties.
10. Set Color Field to the volume generated at step 7.
11. Change the colormap to physics.icol.
- Method 4: Display a mesh of only a specific material from the data with the strain results (bottom left and right viewers in the image above)
1. Start from the result obtained in step 11 of Method 3.
2. In Surface View, click Clear.
3. From the first drop-down menu in the Materials row, select the material you want to display. Click Add.
- Method 5: Display a slice with the displacement vectors at a point of the grid, which can be moved through a visualized mesh (bottom left viewer of the image above)
1. Right-click the generated displacement data.
2. Create a Vector Plane module.
3. Click the "..." button in the Scale row.
4. Set the maximum value to the maximum displacement value. Click OK.
5. If necessary, adjust the scale to use this maximum value.
6. Adjust the slice orientation and position as needed. The displayed vectors are updated immediately.
Note & Related Link
For a complete workflow description with example data, please refer to the Digital Volume Correlation Analysis tutorial in the User's Guide.