It really depends on the application. If you’re comparing to classical instance segmentation methods like a distance-based watershed, Mask RCNN (e.g. using the Keras-RCNN package) has nearly identical performance. However, if you’re looking for real-time performance, you’ll need to look elsewhere (and likely reframe your problem as an object detection rather than instance segmentation problem).
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It really depends on the application. If you’re comparing to classical instance segmentation methods like a distance-based watershed, Mask RCNN (e.g. using the Keras-RCNN package) has nearly identical performance. However, if you’re looking for real-time performance, you’ll need to look elsewhere (and likely reframe your problem as an object detection rather than instance segmentation problem).