Abstract: Disclosed is a method for extracting a boundary line of on-year and off-year moso bamboo forests based on Sentinel-2 remote sensing data, and relates to the technical field of forestry remote sensing. The method includes classifying remote sensing images to acquire spatial distribution of three land type results, the three land type results including several on-year moso bamboo forests, several off-year moso bamboo forests and other vegetations between the on-year and off-year moso bamboo forests; extracting an initial boundary line of the on-year and off-year moso bamboo forests according to spatial distribution of three land type results; building a buffer region of the initial boundary line, and acquiring intersecting pixels of the buffer region and the spatial distribution of three land type results; and calculating pixel thresholds by using the intersecting pixels, and acquiring a final boundary line of the on-year and off-year moso bamboo forests.

Abstract: A mixed system for capturing motions of an object and its use method is disclosed. The mixed system includes at least one inertial sensor module and at least one optical marker mounted on the object, and at least two optical cameras. Each inertial sensor module measures inertial information and spatial attitude information, and each optical camera captures image information of the at least one optical marker. Based on the collected information, a receiving processor respectively generates inertia-based position information and optics-based position information, and further integrates the above information to obtain position information of the object. Integration may involve assignments of different weights to the inertia-based position information and the optics-based position information based on respective measurement errors of the at least one optical marker and the at least one inertial sensor module.

Abstract: A combined motion capturing system comprises multiple inertial sensor units (101), at least one communication unit (102), and a terminal processor (103). The inertial sensor units (101) are connected to the communication unit (102). The communication unit (102) is connected to the terminal processor (103). The inertial sensor units (101) are mounted at positions of one or more motion capture objects according to different combination modes, and measure motion information of the positions where the inertial sensor units (101) are mounted, and send the motion information to the communication unit (102). The communication unit (102) receives the motion information output by inertial sensors, and sends the motion information to the terminal processor (103).

Abstract: A mixed system for capturing motions of an object and its use method is disclosed. The mixed system includes at least one inertial sensor module and at least one optical marker mounted on the object, and at least two optical cameras. Each inertial sensor module measures inertial information and spatial attitude information, and each optical camera captures image information of the at least one optical marker. Based on the collected information, a receiving processor respectively generates inertia-based position information and optics-based position information, and further integrates the above information to obtain position information of the object. Integration may involve assignments of different weights to the inertia-based position information and the optics-based position information based on respective measurement errors of the at least one optical marker and the at least one inertial sensor module.