The 2D image matrix 402 can include a number of horizontal and vertical coordinates, which are defined by the dimensions and points of the 2D image matrix. For example, as shown for FIG. 4, 2D image matrix 402 includes horizontal coordinates X1 (430), X2 (432) and Xe (434), where Xe defines the “end” X coordinate of the horizontal axis of the 2D image matrix. Similarly, 2D image matrix 402 includes vertical coordinates Y1 (430), Y3 (440) and Ye-1 (442), where Ye-1 defines the coordinate just before the “end” Y coordinate of the vertical axis of the 2D image matrix.
2D matrix points can be formed where each of the horizontal coordinates and vertical coordinates intersect in the 2D image matrix 402. For example, 2D matrix point 430 is formed by the intersection of horizontal coordinate X1 and vertical coordinate Y1. Similarly, 2D matrix point 442 is formed by the intersection of horizontal coordinate Xe and vertical coordinate Ye-1.
As depicted in FIG. 4, one or more 2D matrix points may map directly to corresponding 2D coordinates of the raw 3D image 404. For example, as indicated by the arrow, a 2D point 410 associated with raw 3D image 404 maps directly to point (X4, Y1) of the 2D image matrix 402. In another example, a 2D point 412 maps directly to point (X8, Y2) of the 2D image matrix 402. In another example, a 2D point 414 maps directly to point (X17, Y3) of the 2D image matrix 402.
