Detecting the Corners of an Object Using Harris Corner Detector

 

Objective

Following this tutorial, you will learn how to use EasyImage to detect the corners of an object In a general content, the term object should be understood with the meaning of a class instance. In EasyObject, an object is a maximally-sized area of adjacent connected pixels belonging to the layer foreground.. The detection uses the Harris corner detector algorithm.

You'll need to load a source image (step 1), and simply apply the Harris corner detection (step 2).

Corners are detected in the source image

Step 1: Load the source image

1.

From the main menu, click EasyImage, then Harris Corner Detector.

2.

Keep the default variable name, and click OK.

3.

Click the Open icon of the Source Image area, and load the image file EasyGauge\Bracket1.tif.

4.

Keep the default variable name, and click OK.

Step 2: Apply the Harris corner detection

1.

In the Harris corner detector dialog box, enter 2.3 for the Scale property.

2.

Click Apply to perform corners detection.

3.

Click Results to display the coordinates of all detected corners.

4.

The Columns button allows you to display additional properties in the results list.