Contrast Enhancement

Building the Cantata Workspace

1. Read the image $DIP/data/cathedral.viff and display it using the operators User defined and Display Image.
2. Determine the histogram of the image and plot it. Use operators Histogram and 2D Plot.
3. Perform a histogram stretch on the image, determine the new histogram and plot it. Use operators Stretch, Histogram, and 2D Plot.

Exercises

• Perform the same experiment with images with high and low contrast.
• Do you think an interactive histogram modification tool is a desirable tool to have?
• Can you think of other methods to enhance the contrast of an image?