EURASIP Journal on Image and Video Processing

Table 4 Comparison of detected segments with the ground truth for the ten test images

From: A variant of the Hough Transform for the combined detection of corners, segments, and polylines

			NS _c
			PPHT			LSD			HT3D
		dS	4	3	2	4	3	2	4	3	2
	NS _g
1	42		5	4	3	18	12	4	24	21	9
2	120		21	17	11	64	47	17	75	61	45
3	111		23	13	5	59	43	19	59	47	32
4	628		92	56	20	272	174	61	291	236	124
5	306		58	34	17	120	65	23	124	82	37
6	434		57	34	12	174	112	32	194	158	89
7	373		54	27	9	154	101	46	155	121	73
8	350		70	44	13	159	105	42	155	113	61
9	139		14	11	5	45	30	18	60	50	29
10	209		70	54	36	136	112	45	159	145	92

The number of correct matchings of each method (NS _c) is shown considering different values of the distance between ground truth and detected segments (dS). The total number of ground truth segments (NS _g) is shown in the first column

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