62results about How to "Large sampling range" patented technology

The invention discloses a wave energy and solar energy driven unmanned monitoring ship for a marine environment, which comprises a ship body and an unmanned control system, wherein the ship body has a shape of rigid inflatable boat; the unmanned control system comprises a ground remote control system and a ship-loaded system which are coupled with each other through a wireless data link; the ground remote control system comprises a remote control computer, a wireless network bridge and corresponding top-layer application software; the ground remote control system is used for receiving, analyzing and displaying a ground remote control command and data; a serial port of the remote control computer is connected to the wireless network bridge; and the ship-loaded system comprises a navigationcontrol subsystem, a communication subsystem, a navigation information sensing and collecting subsystem, a wave energy and solar energy power generating and supplying subsystem and a data collecting subsystem. No diesel motor is required in the wave energy and solar energy driven unmanned monitoring ship, a wave energy generating system and a solar energy generating device of the ship are directly used for supplying power, the quality of output electric energy is stable and the electromagnetic compatibility is excellent, thereby ensuring the normal work of ship-loaded equipment under a complex marine environment.

The invention discloses a space-time classification-based dynamic background differential detection method, a system and a device. The method comprises the steps of establishing a background model corresponding to each pixel in an image through packet sampling in a time sequence, classifying pixels in the background model according to to-be-detected pixels and obtaining a rough foreground mask image; with a foreground pixel point in the rough foreground mask image as a center, classifying pixel points in a preset neighboring domain range of the central pixel point, and correcting the central pixel point to be a background pixel point or still maintaining the central pixel point as a foreground pixel point according to the number of pixel points the same type with the central pixel point within the preset neighboring domain range of the central pixel point and belonging to background pixel points. According to the invention, the packet sampling method is adopted, so that the ability ofthe dynamic background description is enhanced. Only pixel points the same type of the central pixel point are adopted to judge whether a foreground pixel point is a real foreground pixel point or not. Therefore, the accuracy of detection is improved. The method can be widely applied to the field of moving target detection.