pdisplayperformancevalues

Synopsis

Description

The operator pdisplayperformancevalues displays on standard output the performance values of an algorithm from the average values of the segmentation errors stored in the collection col_out2 and the detail for each segmentation result in the collection col_in1. These two collections are computed by the operator passesssegmentationalgorithm.

The performances are described by segmentation errors according to five indicators:

• Indicator 1: Detection accuracy. The two errors are:
  • Recall error accounts for proportion of false negative regions.
  • Precision error accounts for proportion of false positive regions.
• Indicator 2: Fragmentation consistency. The two errors are:
  • Under-segmentation error accounts for proportion of regions grouped into a single segment.
  • Over-segmentation error accounts for proportion of segments grouped into a single region.
• Indicator 3: boundary precision. The two errors are:
  • Pixel deficit error accounts for proportion of missed pixels in correctly detected regions.
  • Pixel excess error accounts for proportion of false pixels added to correctly detected regions.
• Indicator 4: Shape fidelity. The two errors are:
  • Omission shape error accounts for distance of deleted shape to true shape.
  • Commission error accounts for distance of added shape to true shape.
• Indicator 5: Topology preservation. The two errors are:
  • Hole addition error accounts for the proportion of false holes.
  • Hole detection error accounts for the proportion of missed holes.

Inputs

• col_in1: a collection with the details of segmentation errors for each segmentation results (stored as numerator / denominator) .
• col_in2: a collection with average of segmentation errors considering all segmentation results.

Result

Returns SUCCESS or FAILURE.

Examples

Assesses performances of algorithm 'algo001' from its result images stored in folder 'images/resultimages/algo001':

passesssegmentationalgorithm -v 0 0.5 images/resultimages/algo001 images/groundtruths detail_errors.pan total_errors.pan
pdisplayperformancevalues detail_errors.pan total_errors.pan

See also

Prototype C++