Prewitt-Operator
The Prewitt operator is an edge detection filter similar to the Sobel operator, only the gray values in the current gradient are not additionally weighted in this.
And
By utilizing the separability, the computing time can be greatly reduced.
Analogously to the Sobel operator is obtained as the output of the edge detector, a gradient in the X- and a Y-direction.
In the same way, the edge strength and directions to the edges towards.
Sample Images
Gradient in the X direction
Gradientenstärkebild
Gradientenrichtungsbild