Table 1.

Proposed inference in terms of anatomical description for spinal curvature estimation.

Method	Required landmarks anatomical	Anatomical description	Outcome of this work
Ferguson method	(a) Line joining from SEV to AV	(a) By knowing the x-co-ordinate of MA, its intersection with CSL will identify SEV
	(b) Line joining from AV to TEV	(b) Maximum displacement between x-co-ordinates of CSL and MA represents the apical vertebrae
Cobb method	Identification of SEV and IEV	(a) Proposed system will identify the indication of the curvature by checking the x-co-ordinates where exactly is it different than x- co-ordinates of the CSL
		(b) Similarly the curvature endings are identified by checking once again with overlapping of x coordinate between CSL and MA. The maximal displacement between the x-co-ordinates between CSL and MA represents the apical vertebrae
Greenspan Index	(a) Identification of starting and ending vertebrae	(a) Starting and End vertebrae are identified by the inter-secting point between CSL and MA
	(b) Displacement of each centroid to its CSL	(b) Difference in the x-co-ordinate point of all MA-axis defines this method
Diab	(a) Centroid of three successive starting vertebrae	(a) Upper intersecting point between MA and CSL taken as mid vertebrae
	(b) Centroid of three successive ending vertebrae of the curve	(b) Similarly lower-intersecting point between MA and CSL taken as mid-point for end vertebrae