Segmentation Service

Overview

Using Segmentation Service you can create, edit and delete segmentation data, and change appearance of the segmentation including color, opacity, and visibility.

Segmentations in OHIF are based on the Segmentations in Cornerstone3D. You can read more about it in the Cornerstone Segmentation. OHIF currently only supports one representation of the segmentation data.

Events

There are seven events that get publish in MeasurementService:

Event	Description
SEGMENTATION_UPDATED	Fires when a segmentation is updated e.g., segment added, removed etc.
SEGMENTATION_DATA_MODIFIED	Fires when the segmentation data changes
SEGMENTATION_ADDED	Fires when a new segmentation is added to OHIF
SEGMENTATION_REMOVED	Fires when a segmentation is removed from OHIF
SEGMENTATION_CONFIGURATION_CHANGED	Fires when a segmentation configuration is changed
SEGMENT_PIXEL_DATA_CREATED	Fires when a segment group adds its pixel data to the volume
SEGMENTATION_PIXEL_DATA_CREATED	Fires when the full segmentation volume is filled with its segments

API

Segmentation Creation

• createSegmentationForDisplaySet: based on a reference displaySet, create a new segmentation. E.g., create a new segmentation based on a CT series
• createSegmentationForSEGDisplaySet: given a segDisplaySet loaded by a sopClassHandler, create a new segmentation
• addSegmentationRepresentationToToolGroup: given the toolGroupId, add the given segmentationId to the toolGroup.

Segmentation Behavior

• setActiveSegmentationForToolGroup, getSegmentations, getSegmentation, jumpToSegmentCenter, highlightSegment

Segment Behavior

• setSegmentLockedForSegmentation, removeSegment, addSegment, setSegmentLockedForSegmentation, setSegmentLabel, setActiveSegmentForSegmentation, setSegmentRGBAColorForSegmentation

Segmentation Configuration

Setters

• setSegmentVisibility, setSegmentColor, setSegmentRGBA, setSegmentOpacity, toggleSegmentationVisibility,