Intel® Integrated Performance Primitives Developer Reference

Developer Reference

  • 2021
  • 01/15/2021
  • Public Content
Contents

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:
  • D
    x
     and
    D
    y
     are the first
    x
     and
    y
     derivatives, respectively.
  • D
    xx
     are
    D
    yy
     are the second
    x
     and
    y
     derivatives, respectively.
  • D
    xy
     is the partial
    x
     and
    y
     derivative.
  • D
    xxx
     and
    D
    yyy
     are the third
    x
     and
    y
     derivatives, respectively.
  • D
    xxy
     and
    D
    xyy
     are the third partial
    x
     and
    y
     derivatives.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.