From 5 version is not backward compatible! The way creation of own json type resolvers has been changed! But if you used only simple uses cases, migration (from 4.0) should pass without problems.

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Abstract: There are two mainstream approaches for object detection: top-down and bottom-up. The state-of-the-art approaches are mainly top-down methods. In this paper, we demonstrate that bottom-up ...

Abstract: Real-time object detection is one of the most important research topics in computer vision. As new approaches regarding architecture optimization and training optimization are continually ...