Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference

ID 790148
Date 10/31/2024
Public
Document Table of 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:

  • Dx and Dy are the first x and y derivatives, respectively.
  • Dxx are Dyy are the second x and y derivatives, respectively.
  • Dxy is the partial x and y derivative.
  • Dxxx and Dyyy are the third x and y derivatives, respectively.
  • Dxxy and Dxyy are the third partial x and y derivatives.