Sobel operator
Prewitt operator
Image gradient
Edge detection
Directional derivative
Canny edge detector
Pixel
Operator (biology)
Smoothing
Mathematics
Convolution (computer science)
Algorithm
Maxima and minima
Filter (signal processing)
Computer science
Computer vision
Artificial intelligence
Geometry
Image (mathematics)
Mathematical analysis
Image processing
Biochemistry
Chemistry
Repressor
Transcription factor
Gene
Artificial neural network
