Logosub Log Track Definition (Calibration)

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The Depth and Scale Axes and their associated grids are used in NeuraLog to define a Log Track on the log image.   A Log Track defines the digitizing depth range, the scale range, grid graduations and their location on the log image.  

 

A complete Log Track consists of:

 

A Depth Axis

 

A Scale Axis

 

Depth Axis Grids

 

Scale Axis Grids

 

The Log Track, shown below, allows the traced curve overlay to be mapped to actual digits.   In general, the model of the curve track provides for a constant track width with longitudinal warp and stretch.   The Depth Axis Overlay follows the left edge of the track while the Scale Axis Overlay defines the width of the track.   The Depth Axis Grids define constant-depth sections on the track.  Note: Each track in the scanned log image requires its own Log Track overlay.

 

Logwarp1

 

Once a depth and scale axis have been defined to create a Log Track, any number of curves can be captured on that track.   This is done in the application by changing the left/right scale axis values for each new curve.  The following sections describe how to define and create the necessary elements of a Log Track in the proper sequence.