Edge Detection Results
- Using EdgeDetector 1.1
These are the results of edge detection obtained by using EdgeDetector 1.1 with various combinations of the two parameters: Edge contrast lower limit (LL) and edge strength (ES). Images in each section correspond to the ES parameter list at the top of the section in the order of from left to right in each row, and from top to bottom row.

In comparison with the results from EdgeDetector 1.0, the main improvement is that more edges close to one another are detected. It should be noted that different values for LL and ES are used here. Strictly speaking, the only case where the results from the two versions of EdgeDetector are comparable is when both LL and ES are 100.0.

The head image was downloaded from Dave Eberly's page. Again, when Gaussian smoothing was applied before using EdgeDetector 1.1, the results may be quite different, and the edges tend to be more connected.

Results were also obtained from synthetic images.

The original image

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LL=100.0; ES=100.0, 40.0, 30.0, 20.0 and 10.0

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LL=80.0; ES=100.0, 40.0, 30.0, 20.0 and 10.0

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LL=60.0; ES=100.0, 40.0, 30.0, 20.0 and 10.0

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LL=40.0; ES=100.0, 40.0, 30.0, 20.0 and 10.0

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Edge Detection Home Page
Results from the head image || Results from the Lena image
Download EdgeDetector || Download Synthetic Test Images


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