Joint Investigation and 3D Visual Evaluation of Rock Mass Quality

Table 2

Crack parameters in close-up photographs.

Photo ID	Joint ID	Centroid x	Centroid y	Joint length (cm)	Joint dip angle (°)	Left endpoint X of line segment	Left endpoint Y of line segment	Right endpoint X of line segment	Right endpoint Y of line segment
1	1	3.902368613	31.66493389	17.13418358	91.78991061	3.634777623	23.10202219	4.169959604	40.22784559
1	2	10.45834788	56.68469152	14.50432034	119.8759927	6.845869511	50.39630324	14.07082626	62.9730798
1	3	13.26805329	71.66978699	15.48563651	108.1218602	10.85973437	64.31103475	15.6763722	79.02853924
1	4	17.81710013	94.68261219	18.53345324	94.96974073	17.01432715	85.45072301	18.6198731	103.9145014
97	79	133.5649822	127.8110631	15.18768713	117.7185016	130.0328734	121.0886627	137.0970909	134.5334636
97	80	111.1190009	154.244909	13.81812699	76.65127289	109.5238551	160.9673095	112.7141468	147.5225086
97	81	127.8680326	137.4958774	17.35616609	93.76403486	127.2983377	128.836514	128.4377276	146.1552407