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Practical: Finding edge features

A practical on finding edge features in Fiji / ImageJ
An image of Arabidopsis seedlings on a plate with the Sobel edge detection filter added. The outline of the plants are clearly visible and shown white on a black background.

Edge detection is used to find the outline of objects.

In this practical you can try this yourself using Fiji, and also see how edge detection is often used with other steps such as filtering, and morphological operations such as erosion and dilation.

All the instructions you need are in the attached pdf in Downloads below.

The example image in the practical can be found here: plate.jpg.

Please let us know how you get on in the comments.

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Introduction to Image Analysis for Plant Phenotyping

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