Abstract: An image positioning method having following steps is provided. The steps include: obtaining world coordinates of two reference points and image coordinates of two projection points corresponding to the two reference points; calculating a plurality of coordinate transformation parameters relative to transformation between any image coordinates and any world coordinates corresponding to a camera according only to the world coordinates of the two reference points, the image coordinates of the two projection points, and world coordinates of the camera; obtaining an second image having an object image corresponding to an object through the camera; and positioning world coordinates of the object according to the coordinate transformation parameters.

Abstract: A multi-channel receiver optical sub assembly module for a fiber Bragg grating sensor according to an embodiment of the present invention includes a housing, a connection socket, an optical bench, a thermoelectric cooler, an arrayed waveguide grating chip, a photodiode array disposed on the optical bench and including a plurality of photodiode chips connected to the optical channels of the arrayed waveguide grating chip, and a printed circuit board which is connected to the other side of the housing while passing through the other side of the housing, of which a portion of a body is disposed on the optical bench, and which is connected to the photodiode array.

Abstract: A sound event detection method includes receiving a sound signal and determining and outputting whether a sound event is present in the sound signal by applying a trained neural network to the received sound signal, and performing post-processing of the output to reduce an error in the determination, wherein the neural network is trained to early stop at an optimal epoch based on a different threshold for each of at least one sound event present in a pre-processed sound signal. That is, the sound event detection method may detect an optimal epoch to stop training by applying different characteristics for respective sound events and improve the sound event detection performance based on the optimal epoch.

Abstract: Disclosed are methods and apparatuses for relaying messages in LPWAN. An operation method of a terminal may comprise transmitting a first join request message to a base station without IQ inversion; when a number of failed transmissions of the first join request message is greater than or equal to a preconfigured threshold, transmitting an IQ-inverted second join request message to a relay; and receiving a join response message from the relay that is a response to the second join request message. Accordingly, the performance of the communication system can be improved.

Abstract: A domain adaptation-based object recognition apparatus includes a memory configured to store a domain adaptation-based object recognition program and a processor configured to execute the program. The processor learns a generative model for generating a feature or an image similar to a gallery image on the basis of domain adaptation in association with an input probe image and learns an object recognition classification model by using a learning database corresponding to the gallery image and the input probe image, thereby performing object recognition using the input probe image.

Abstract: Provided is a waveguide including an input end configured to receive an input wave from an outside; a filtering portion configured to change a frequency range of the input wave; an output end configured to output an output wave of which a frequency range is changed from the frequency range of the input wave; and an inner wall controller configured to control a size of an inner wall of the filtering portion such that the frequency range of the input wave changes to the frequency range of the output wave.

Abstract: A cartilage repair implant, an auxiliary surgical tool kit and a cartilage repair system are provided. The cartilage repair implant includes a body and a plurality of pins. The body is a porous structure and is configured to carry cartilage repair material. The pins are fixed to the body for being inserted into a patient's bone. The auxiliary surgical tool kit includes a positioning sleeve and a click tool. The positioning sleeve has a through passage. A first alignment structure is disposed on the sidewall of the through passage. The click tool includes an outer tube and a push rod. A second alignment structure mutually aligned with the first alignment structure is disposed on the outer wall of the outer tube. The outer tube is configured to pass through the through passage. The push rod is slidably disposed in the outer tube. One end of the outer tube has a shaping blade for slicing a to-be-implanted region on an affected area of the patient.

Abstract: Provided is a conductive polymer composite material including an intrinsically conductive polymer, a cellulose nanofiber, and a polyol, wherein the surface of the cellulose nanofiber contains a carboxylic group. In one embodiment, based on 100 parts by weight of the intrinsically conductive polymer, the content of the cellulose nanofiber is 1 to 100 parts by weight, and the content of the polyol is 10 to 3,000 parts by weight. A capacitor including the conductive polymer composite material is also provided.

Abstract: Disclosed is a method and apparatus for providing an omni-directional stereoscopic image based on layer projection. According to an embodiment of the present disclosure, there is provided a method of providing an omni-directional stereoscopic image based on layer projection, the method including: obtaining a spatial-information-point set; and generating a layer image based on a spatial-information-point subset constructed for each of multiple layers, the layer image corresponding to each of the multiple layers, wherein the spatial-information-point subset constructed for each of two consecutive layers includes one or more duplicate spatial information points.

Abstract: Provided is a multi-copter, including: a fuselage; three or more intermediate supporting bars which have one ends fixed to the fuselage and radially extend from the fuselage; two mounting rods which are divided into two branches at the other ends of the intermediate supporting bars; and a propeller set configured by two propellers which are mounted to two mounting rods and rotate at the same rotational speed (RPM) in opposite directions. When an angle formed by any one propeller between two propellers which form the propeller set and the mounting rod is a first angle and an angle formed by the other one propeller and the mounting rod is a second angle, a difference between the first angle and the second angle is 360/2n degrees and n is a number of blades for every propeller.

Abstract: Provided is a method of learning a pose of a moving object. The method includes determining 3D feature points in the 3D mesh model obtained by previously modeling a general shape of a moving object, fitting the 3D mesh model to the 2D learning image obtained by previously photographing the real shape of the moving object with respect to the determined 3D feature points, obtaining learning data associated with pose estimation of the moving object from the 2D learning image with the 3D mesh model fitted thereto, and learning a pose estimation model estimating a pose of a target moving object included in one real image obtained by the camera by using the learning data.

Abstract: Provided is a dynamic object detecting technique, and more specifically, a system and method for determining a state of a motion of a camera on the basis of a local motion estimated on the basis of a video captured by a dynamic camera and a result of analyzing a global motion, flexibly updating a background model according to the state of the motion of the camera, and flexibly detecting a dynamic object according to the state of the motion of the camera.

Abstract: An integrating sphere includes twelve pentagonal spherical shells and twenty hexagonal spherical shells. The hexagonal spherical shell includes a first circular spherical shell having a first diameter and six first auxiliary spherical shells formed by cutting the first circular spherical shell. The pentagonal spherical shell includes a first circular spherical shell having the first diameter and five second auxiliary spherical shell formed by cutting a second circular spherical shell having a second diameter.

Abstract: An online cloud-based service processing system, an online evaluation method and a computer program product thereof are provided. The online evaluation method includes: running at least one application service unit of the processing system; executing at least one evaluation registration procedure for at least one application service evaluation unit of the processing system in response to at least one registration request; running the at least one application service evaluation unit; dispatching at least one online service request respectively to the at least one application service unit and the at least one application service evaluation unit, and generating at least one output result corresponding to the at least one online service request; and calculating at least one ranking for each of the at least one application service evaluation unit based on output result(s) generated by the at least one application service evaluation unit among the at least one output result.

Abstract: A swimming posture correction method and a swimming posture correction system, adapted for a computing apparatus to correct a swimming posture of a swimmer using at least two gravity sensors, are provided. The gravity sensors are respectively disposed at ends of at least two limbs of the swimmer performing a relative stroke action. In the method, body parameters of the swimmer are obtained and a reference index of coordination for implementing a swimming posture suitable for the body parameters is captured. A stroke of the limb is monitored using the gravity sensors to obtain a timing diagram of the limbs performing a stroke promotion action. Then, an index of coordination of the swimmer is calculated by analyzing the timing diagram and compared with the reference index of coordination so as to prompt for correcting the swimming posture according to a comparison result.

Abstract: System, methods, and other embodiments described herein relate to predicting a presence of occluded objects from a robotic device. In one embodiment, a method includes, in response to acquiring sensor data about a surrounding environment, analyzing the sensor data to identify a perceived object in the surrounding environment by determining at least a class of the perceived object. The method includes determining a presence factor associated with the perceived object according to an observation model. The presence factor indicates a likelihood of an occluded object existing in an occluded region associated with the perceived object. The method includes controlling one or more systems of the robotic device according to the presence factor.

Abstract: Provided is an antenna pattern synthesizing apparatus that synthesizes an antenna pattern by applying quantum-behaved particle swarm optimization (QPSO) algorithm of a satellite synthetic aperture radar (SAR), the antenna pattern synthesizing apparatus including a designer configured to design a mask template based on a performance of an SAR system including an antenna array in which a plurality of antennas are arranged in a multidimensional structure, and a generator configured to calculate a signal amplitude and a signal phase for the antenna array to generate a first antenna pattern using QPSO, and generate the first antenna pattern in the designed mask template based on the calculated signal amplitude and the calculated signal phase.

Abstract: The present invention relates to a polymer/filler/metal composite fiber, including a polymer fiber comprising a metal short fiber and a filler; the metal short fiber is distributed as a dispersed phase within the polymer fiber and distributed in parallel to the axis of the polymer fiber; the filler is dispersed within the polymer fiber and distributed between the metal short fibers; the filler does not melt at the processing temperature of the polymer; said metal is a low melting point metal and selected from at least one of single component metals and metal alloys, and has a melting point which ranges from 20 to 480° C., and, at the same time, which is lower than the processing temperature of the polymer; the metal short fiber and the polymer fiber have a volume ratio of from 0.01:100 to 20:100; the filler and the polymer have a weight ratio of from 0.1:100 to 30:100.

Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.

Abstract: A data augmentation method includes extracting one or more basis vectors and coefficient vectors corresponding to sound source data classified in advance into a target class by applying non-negative matrix factorization (NMF) to the sound source data, generating a new basis vector using the extracted basis vectors, and generating new sound source data using the generated new basis vector and the extracted coefficient vectors.