Outline

1
Outline

• My project EDGE DETECTION
• Lets view the code
• Sample images

D. M. Cates 4/16/01 Slide design courtesy of
Prof. X. Liu
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First off...

• You may be asking
• Who is this guy?
• Where has he been?

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EDGE DETECTION

• Prof. Liu discussed this early on in the
  semester, February 9
• What is EDGE DETECTION?

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My project

• Created an edge detector utilizing Sobel operator
• Chalkboard refresher
• Gradient kernel 1 kernel 2
• Remember, edge detector operators (e.g. Sobel,
  Prewitt, etc.) sum to ZERO

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How does this thingy work?

• Compilegcc -O4 -o ced ced.c -lm
• Runced TAU BINARY-THRESHOLD input-file
  output-file

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Some images

• Comparison with Canny
• relatively slower
• noise a big problemGoogle icon is a
  trademark of Google Inc..Whassup?! Icon is a
  registered trademark of Anheuser-Busch, Inc.

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Conclusion

• Just another edge detector to add to your
  collection
• Feel free to modify
• Fairly well documented, but email cates_at_cs if
  questions
• Want more?
• Google search!http//www.google.com/search?qsobe
  ledgeoperatorbtnGGoogleSearch