Abstract: Embodiments of the present disclosure relate to a smart tracking-based projection method and system. The method includes: acquiring information of a real space of a spatial information capturing unit, constructing a 3D model of the real space, and acquiring first position information of a projection picture; acquiring target image information of a target tracking unit, and acquiring second position information of a tracking target based on the target image information; acquiring a target projection region based on the 3D model and the second position information; acquiring, based on the target projection region, rotation information desired by the projection unit; and controlling, based on the rotation information, a drive unit to operate such that the projection picture reaches the target projection region.

Abstract: Methods and systems for managing access to a distributed storage systems include storing a total bandwidth utilization amount allocated to each of a plurality of client devices and a current bandwidth amount utilized by each of the plurality of client devices. An actual bandwidth amount utilized for servicing one or more requests received from a plurality of client devices over a network is monitored and an expected bandwidth utilization amount for servicing a request to access a distributed storage system having a plurality of storage devices interconnected over a network, received from respective ones of the plurality of client devices is determined. The client device transmitting the request is either permitted or denied access to the distributed storage system based on a function of the expected bandwidth utilization of the request relative to the total bandwidth utilization amount allocated to the requesting client device.