Methods, systems and computer products for locating features on subjects in motion for accurate and precise targeted delivery of substances

A method for identifying a region of interest for a feature of a subject in an X, Y-plane using 3D data, the method comprising:

• generating ranked Z data for all points of X- and Y-axes;
• generating Z-profile curves on the X- and Y-axes based on known characteristics of a feature and a subject;
• performing peak analysis on the generated Z-profile curves to yield regions of interest on the X- and Y-axes;
• and
• determining the intersection of the regions of interest on the X- and Y-axes, wherein the intersection defines the overall region of interest for the feature in the X, Y-plane.

A method for identifying a region of interest for a feature of a subject in an X, Y-plane using 3D data, the method comprising:

• establishing bins to cover a Z-axis range, and for each incremental value of X on an X-axis and Y on a Y-axis, recording a number of occurrences of Z values for each bin;
• evaluating a resulting bin histogram pattern to match a bin to a feature of a subject;
• using a location of the matched bin histogram pattern to establish a region of interest on the X-axis and a region of interest on the Y-axis;
• and
• estimating a location of an overall region of interest for a feature of a subject based on an intersection of the X-axis region of interest and the Y-axis region of interest.