Edge detection

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Explore the main themes, entities and connections around Edge detection. Start with the topic map, then use the sections below for research and deeper semantic analysis.

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Approaches

Zero-crossing First-order derivative expression Second-order derivative expression Laplacian Gaussian smoothing

37 related topics

A simple edge model

Depth-of-field Point spread function Penumbral blur Shading Error function

5 related topics

Overview

Mathematical Curves Digital image Image brightness Discontinuities

14 related topics

Edge properties

Line Ridge detector Pixels

3 related topics

Topics to explore

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Overview

Mathematical
Curves Curve
Digital image
Image brightness Luminous intensity
Discontinuities Discontinuity (mathematics)
Step detection
Change detection
Image processing
Machine vision
Computer vision
Feature detection Feature detection (computer vision)
Feature extraction
Scale space representation
Gaussian kernel

Motivations

Image analysis

Edge properties

Line Line (mathematics)
Ridge detector Ridge detection
Pixels Pixel

A simple edge model

Approaches

Zero-crossing Zero crossing
First-order derivative expression
Second-order derivative expression
Laplacian
Gaussian smoothing
Noise reduction
John Canny
Haralick
The Marr-Hildreth edge detector Marr–Hildreth algorithm
Ron Kimmel
Alfred Bruckstein Alfred Bruckstein?action=edit&redlink=1
Canny edge detector
Vladimir A. Kovalevsky Vladimir Antonovich Kovalevsky
Exponential filters Exponential filter?action=edit&redlink=1
Differential edge detector Edge detection
Log Gabor filter
Sobel operator
Image derivatives Image derivative
Image gradient
Prewitt operator
Roberts cross
Frei–Chen operator Frei–Chen operator?action=edit&redlink=1
SNR Signal-to-noise ratio
Noise Image noise
Thresholding Adaptive thresholding
Hysteresis
Directional derivative
Object recognition
Hough transforms Hough transform
Connectivity Pixel connectivity

Advanced semantic analysis

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Map overview Semantic statistics

Nodes66

Edges65

Triples48

Avg. degree1.97

Density0.030303

Components1

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Edge detection

Top relations

related to Further reading · 14

Edge detection → Computer Science, Edge, EdgedetectEdge Detection, EMS PressEntry, Encyclopedia, EngineeringEdge Detection, FPGAA-contrario, Image Processing, Lindeberg, Mathematics, Matlab Archived, MATLABSubpixel, Tony, Wayback MachineImage Tools Effects

related to The Marr-Hildreth Edge Detector · 8

Edge detection → Gaussian, Laplacian, LoG, Moreover, The, The Marr-Hildreth, This, Unlike

related to Subpixel · 7

Edge detection → Certain, Curve, Moment-based, Partial, Reconstructive, These, To

related to Approaches · 5

Edge detection → As, Gaussian, Laplacian, The, There

related to Difficulty · 4

Edge detection → For, However, Outside, Similarly

related to Phase congruency-based · 3

Edge detection → Mach, Phase, These

see also · 3

Edge detection → ApplicationsEdge-preserving, Convolution, Gabor

is a · 1

Edge detection → fundamental tool in image processing

Important terminology Word statistics

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Important terminology

edge image detection edges pixels methods gradient threshold noise derivative magnitude operator also filter color applied approach may one detector

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Edge detection	is a	fundamental tool in image processing	0.90	text
the gradient magnitude	instance of	usually a first-order derivative expression	0.80	text
and then searching for local directional maxima of the gradient magnitude using a computed estimate of the local orientation of the edge	instance of	usually a first-order derivative expression	0.80	text
usually the gradient direction	instance of	usually a first-order derivative expression	0.80	text
Edge detection	related to Approaches	There	0.60	section
Edge detection	related to Approaches	The	0.60	section
Edge detection	related to Approaches	Laplacian	0.60	section
Edge detection	related to Approaches	As	0.60	section
Edge detection	related to Approaches	Gaussian	0.60	section
Edge detection	related to Difficulty	Outside	0.60	section
Edge detection	related to Difficulty	For	0.60	section
Edge detection	related to Difficulty	However	0.60	section

Related concept clusters Concept neighborhoods

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Connections between topic areas Semantic bridges

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Min side: 3

Research this topic

Explore this topic

Approaches

A simple edge model

Overview

Edge properties

Key facts & relationships

Topics to explore

Overview

Motivations

Edge properties

A simple edge model

Approaches

Advanced semantic analysis

Map overview Semantic statistics

Edge detection

How this topic connects Entity context

Edge detection

Top relations

Important terminology Word statistics

Important terminology

Entity relationships Subject–Predicate–Object triples

Related concept clusters Concept neighborhoods

Connections between topic areas Semantic bridges