System and method for generating and displaying contours

A non-transitory computer readable medium, the non-transitory computer readable medium storing instructions that, when executed by a processing circuit, cause the processing circuit to:

• calculate a first threshold, based on a median of a plurality of maximum values in a first target point in a first slice;
• generate a first contour,
• the first contour being a boundary of a first region,
• the first region being a region within which:
• elements of the first slice are greater than the first threshold, or
• the elements of the first slice are less than the first threshold;
• generating a centroid for the first contour and saving the generated centroid in a memory;
• generating a second contour in a second slice, based on a second target point in the second slice, wherein:
• the first slice is a first slice of a scan volume, and
• the second slice is a second slice of the scan volume, the second slice being adjacent to the first slice, and wherein
• the second target point is calculated as the centroid of the first contour, and the generating of the second contour comprises generating the second contour in a search area centered on the second target point;
• and
• remove artifacts from the first slice by calculating a horizontal moving sum along a row of the first slice and a vertical moving sum along a column of the first slice, and selecting a moving filter for the moving sums to be comparable to or wider than a thickness of the artifacts to be removed to remove the artifacts.

A system for generating a view of an interior of an object, the system comprising:

• a scanner for scanning the object;
• a processing circuit;
• and
• a display,
• the processing circuit being configured to:
• calculate a first threshold, based on a median of a plurality of maximum values in a first target point in a first slice;
• and
• generate a first contour,
• the first contour being a boundary of a first region,
• the first region being a region within which:
• elements of the first slice are greater than the first threshold, or
• the elements of the first slice are less than the first threshold;
• generate a centroid for the first contour and save the generated centroid in a memory;
• generate a second contour in a second slice, based on a second target point in the second slice, wherein:
• the first slice is a first slice of a scan volume, and
• the second slice is a second slice of the scan volume, the second slice being adjacent to the first slice, and wherein
• the processing circuit calculates the second target point as the centroid of the first contour, and generates the second contour by generating the second contour in a search area centered on the second target point;
• and
• remove artifacts from the first slice by calculating a horizontal moving sum along a row of the first slice and a vertical moving sum along a column of the first slice, and selecting a moving filter for the moving sums to be comparable to or wider than a thickness of the artifacts to be removed to remove the artifacts.