Mask Application

Building the Cantata Workspace

The input files are: echo.viff and echo-mask.viff

1. Read the image echo.viff and display it using the operators User defined and Display Image.
2. Computes its statistics, use the Statistics operator.
3. Read echo-mask.viff and display it.
4. Copy its data values to the mask segment using Copy from Value operator with the mask option selected. The resultant image will have no value segment but will have a mask segment.
5. Input this new file with only a mask segment into the first image, use the Insert Segments operator. The resultant image now has value and mask segments.
6. Display the new image and compute its statistics. Compare it with the unmasked image.

Exercises

• Compute the histograms of the original image and the new image with a "validity mask"segment and compare them.