32results about How to "Realize multi-angle observation" patented technology

The invention provides a deep water net-cage remote-monitoring system which comprises an underwater camera device, a controller, a GPRS communication network, and a monitoring room GPRS terminal and computer. The main body of the underwater camera device is a plurality of CCD cameras which are independently-sealed in a probe shell, so that the requirement for optical signal in sea is reduced and the quality of video signal is improved. A plurality of probes are arranged vertically and horizontally to facilitate the multi-angle observation of working state of the net-cage. The camera signal istransmitted to the controller via a video cable and processed and then transmitted to the computer in the monitoring room via the GPRS communication network. The computer processes the signal by visual control to produce fish video images shot by the plurality of probes. As a result, the user can know the cultivation conditions in the net cage at any time without going to the spot on the sea.

Provided is a surgical follow-up robot arm. The robot arm is an auxiliary robot arm during a surgical operation, especially a general surgical trauma operation. Through the arrangement that a multi-joint structure and linkage coordination are applied, a pressure-sensitive sensor, a follow-up target and a receiving module are applied, and by combining with PLC control, an operation performed by oneperson can be achieved; a function of movements following wound surfaces can be achieved at low cost and with high accuracy.

The invention discloses a distributed DTW human behavior recognition method based on human behavior characteristics. The distributed DTW human behavior recognition method based on human behavior characteristics comprises the following steps: obtaining the current frame human behavior characteristics and adding it to the human behavior characteristic time series Middle; use the dynamic time warping algorithm DTW to match the current observed human behavior feature sequence with the specific behavior sequence that has been learned in the database template, and calculate the best matching similarity based on the chi-square distance between the two; take the inverse of the similarity , the matching probability is obtained after normalization; the action pattern matching probability information of each sensor is exchanged with adjacent sensor data as consistency information, and after consistent iterative calculation, the recognition results of adjacent sensor nodes are finally consistent. The present invention realizes accurate human body specific behavior recognition.

The invention discloses an imaging spectrometer calibration device, which comprises a calibration device supporting seat, a diffuse reflection calibration plate, a diffuse reflection calibration plate driving mechanism, a reflector and a reflector driving mechanism. The diffuse reflection calibration plate driving mechanism drives the diffuse reflection calibration plate to rotate; when the diffuse reflection calibration plate rotates to the horizontal direction, sunlight is transmitted onto the diffuse reflection calibration plate and is reflected to enter an imaging spectrometer main optical system through the reflector so as to realize the light spectrum and radiation calibration function; and when the diffuse reflection calibration plate rotates to the downwards vertical direction, a ground object enters an imaging spectrometer through the reflector so as to enter an imaging state, and the reflector driving mechanism can drive the reflector to rotate so as to realize different imaging viewing angles. When the diffuse reflection calibration plate, the reflector and the calibration device supporting seat are closed, the imaging spectrometer is positioned in a dustproof and heat-insulating state. The invention has the characteristics that: the calibration device is compact in structure and has calibrating, imaging, dustproof and heat-insulating functions.

The invention discloses a method for estimating the consistency of distributed information of human joint points based on interactive multi-models, the position initialization of the joint points of the skeleton; the motion estimation of the joint points by local sensors: the construction of the motion model and the observation model of the joint points of the human body, and the realization of the state of the joint points Efficient estimation of the target joint points between sensors: each sensor sends its own estimated joint point information vector, information matrix and its corresponding information contribution, model probability to the adjacent communication sensor nodes, and Receive the information of the surrounding sensors, use the information consistency algorithm, fuse the estimation results of the surrounding sensors, and iterate several times in a row to achieve the convergence of the algorithm and the estimation results. By building a distributed RGBD sensor network and using the information consistency algorithm, the human body is realized Distributed estimation of joint points, no data fusion center in the network, improves the robustness of the system to node information error and invalidity, and makes it easier to expand the sensor network.

The invention relates to a sealed electromagnetic furnace chamber and relative dual-watch window door, which can baffle electromagnetic wave from human body, wherein back half part of the electromagnetic furnace is fixed in one furnace chamber whose opening is hinged with a furnace door which has a chamber, and the front half part of the electromagnetic is inserted into the chamber of the furnace door. When the furnace door is open, the front half part is exposed to cook food, the front upper part of the furnace door is incline, the front and incline faces of the furnace door are respectively mounted with a watch window to watch the furnace condition. The front of a water accumulation table at the bottom of the furnace chamber is inserted with a water box. The furnace chamber and the furnace door can be made on microwave oven. The invention fixes the electromagnetic furnace in a sealed space formed by a furnace chamber and a furnace door, to baffle the electromagnetic wave from user, with simple watch on the furnace condition.

The invention discloses a joint data association method based on multi-features of color images and depth images, and adopts joint data probability association algorithm local sensor nodes to perform the first data association between tracking targets and target observations; the realization of the Hungarian algorithm based on Mahalanobis distance The second data association between the sensor nodes for the tracking target; in the first data association, based on the multi-feature target observation candidate set adjustment mechanism, using the joint point position observation information z and the color image gradient direction histogram feature h c and depth image gradient orientation histogram feature h d Construct three threshold thresholds (γ z ,γ c ,γ d ) to limit the observation set size. The invention can improve the estimation precision and execution efficiency of the JPDA algorithm.