“Kirsch operator”的意思、由来-开放百科全书

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Kirsch operator

释义

Mathematical description
Example images
References

The Kirsch operator or Kirsch compass kernel is a non-linear edge detector that finds the maximum edge strength in a few predetermined directions. It is named after the computer scientist Russell A. Kirsch.

Mathematical description

The operator takes a single kernel mask and rotates it in 45 degree increments through all 8 compass directions: N, NW, W, SW, S, SE, E, and NE. The edge magnitude of the Kirsch operator is calculated as the maximum magnitude across all directions:

where z enumerates the compass direction kernels g:

and so on.

The edge direction is defined by the mask that produces the maximum edge magnitude.

Example images

References

{{cite journal

| last=Kirsch
| first=R.
| title=Computer determination of the constituent structure of biological images
| journal=Computers and Biomedical Research
| volume=4
| issue=3
| pages=315–328
| year=1971
| doi=10.1016/0010-4809(71)90034-6
| url=http://www.sciencedirect.com/science/article/pii/0010480971900346
| citeseerx=10.1.1.161.956
}}

1 : Feature detection (computer vision)

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