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Exercise

Less edgy

Let's now try to spot just the outer shape of the grapefruits, the circles. You can do this by applying a more intense Gaussian filter to first make the image smoother. This can be achieved by specifying a bigger sigma in the canny function.

In this exercise, you'll experiment with sigma values of the canny() function.

Grapefruits
Image preloaded as grapefruit.

The show_image has already been preloaded.

Instructions 1/3
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  • 1

    Apply the canny edge detector to the grapefruit image with a sigma of 1.8.

    • 2

      Apply the canny edge detector to the grapefruit image with a sigma of 2.2.

    • 3

      Show the resulting images.