Feature Detection Functions
This section describes feature detection functions.
The set of the Sobel derivative filters is generally used to find edges, ridges, and blobs, especially in case of scale-space images, for example, pyramids.
The following naming conventions are used in the equations described below:
- DandxDare the firstyxandyderivatives, respectively.
- DarexxDare the secondyyxandyderivatives, respectively.
- Dis the partialxyxandyderivative.
- DandxxxDare the thirdyyyxandyderivatives, respectively.
- DandxxyDare the third partialxyyxandyderivatives.