Hough Transform - Revision history

Athrasher7 at 01:51, 6 February 2020

2020-02-06T01:51:44Z

2018-06-14T01:36:33Z

2005-11-22T02:32:05Z

added link to current implementation of filter

2005-11-22T02:31:08Z

added section detailing issues with the current implementation

2005-11-22T02:27:39Z

‎Cons: toned down the language relating to the filter's ability to detect curved lines

2005-11-22T02:23:59Z

‎Pictures: added pictures for when the filter is applied to an image containing no lines

2005-11-22T01:34:41Z

added pictures

2005-11-21T16:23:41Z

added Wikipedia link

2005-11-19T00:33:04Z

added description of pros/cons and inputs/outputs

2005-11-16T19:58:32Z

New page

A good description is on [http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm this page].

← Older revision		Revision as of 01:51, 6 February 2020
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−	[[Category:How to Guides]]	+	[[Category:How to Guides: Technical]]
	[[Category:IGVC]]		[[Category:IGVC]]

← Older revision		Revision as of 01:36, 14 June 2018
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		+	[[Category:How to Guides]]
		+	[[Category:IGVC]]
		+
	This algorithm is implemented as the '''LinearHoughTransform2''' filter for the [[ImageFilterDemo]] program.		This algorithm is implemented as the '''LinearHoughTransform2''' filter for the [[ImageFilterDemo]] program.

← Older revision		Revision as of 02:32, 22 November 2005
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		+	This algorithm is implemented as the '''LinearHoughTransform2''' filter for the [[ImageFilterDemo]] program.
		+
	A good description is on [http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm this page].		A good description is on [http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm this page].

@@ Line 16: / Line 16: @@
 == Output ==
 * A list of the positions/orientations of the lines detected in the input image
 == Pictures ==

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 == Cons ==
-* Can only detect ''straight'' lines, making it almost useless for curved lines - which will probably be common
+* Designed for detecting ''straight'' lines, making it tricky to use for curved lines - which will probably be common
 * Designed to detect ''lines'' as opposed to detecting ''line segments''
 * Computationally expensive (when compared to simple filters)

@@ Line 37: / Line 37: @@
 [[Image:TwoDashedCurvyLinesAsHoughSpace.png|thumb|left|150px|]]
 [[Image:TwoDashedCurvyLinesWithIdentifiedLines.png|thumb|left|150px|]]
 {{clr}}

← Older revision		Revision as of 01:34, 22 November 2005
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	== Output ==		== Output ==
	* A list of the positions/orientations of the lines detected in the input image		* A list of the positions/orientations of the lines detected in the input image
		+
		+	== Pictures ==
		+	[[Image:LinesOnBlack.png\|thumb\|left\|150px\|Two solid straight lines]]
		+	[[Image:LinesOnBlackWithHoughTransform.png\|thumb\|left\|150px]]
		+	[[Image:LinesOnBlackWithIdentifiedLines.png\|thumb\|left\|150px]]
		+	{{clr}}
		+
		+	[[Image:CurvyLine.png\|thumb\|left\|150px\|One solid curvy line]]
		+	[[Image:CurvyLineAsHoughSpace.png\|thumb\|left\|150px\|]]
		+	[[Image:CurvyLineWithIdentifiedLines.png\|thumb\|left\|150px\|]]
		+	{{clr}}
		+
		+	[[Image:TwoSolidCurvyLines.png\|thumb\|left\|150px\|Two solid curvy lines]]
		+	[[Image:TwoSolidCurvyLinesAsHoughSpace.png\|thumb\|left\|150px\|]]
		+	[[Image:TwoSolidCurvyLinesWithIdentifiedLines.png\|thumb\|left\|150px\|]]
		+	{{clr}}
		+
		+	[[Image:TwoDashedCurvyLines.png\|thumb\|left\|150px\|Two dashed curvy lines]]
		+	[[Image:TwoDashedCurvyLinesAsHoughSpace.png\|thumb\|left\|150px\|]]
		+	[[Image:TwoDashedCurvyLinesWithIdentifiedLines.png\|thumb\|left\|150px\|]]
		+	{{clr}}

← Older revision		Revision as of 16:23, 21 November 2005
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	A good description is on [http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm this page].		A good description is on [http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm this page].
		+
		+	Wikipedia also has its own [http://en.wikipedia.org/wiki/Hough_transform Hough Transform article].

	== Pros ==		== Pros ==

← Older revision		Revision as of 00:33, 19 November 2005
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	A good description is on [http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm this page].		A good description is on [http://homepages.inf.ed.ac.uk/rbf/HIPR2/hough.htm this page].
		+
		+	== Pros ==
		+	* Able to detect dashed lines
		+
		+	== Cons ==
		+	* Can only detect ''straight'' lines, making it almost useless for curved lines - which will probably be common
		+	** Useless for detecting curved lines
		+	* Designed to detect ''lines'' as opposed to detecting ''line segments''
		+	* Computationally expensive (when compared to simple filters)
		+
		+	== Input ==
		+	* A binary/grayscale image hilighting the line-pixels in the input image
		+
		+	== Output ==
		+	* A list of the positions/orientations of the lines detected in the input image