Abstract: An elevation system includes deck units each including a frame, a movable deck coupled to the frame to be movable in a vertical direction, a sliding unit coupled to the frame to be movable in a horizontal direction, and elevation wires connected to the movable deck and the sliding unit via a direction changing sheave at the frame, a first sheave at each of the deck units and fixed to the frame, a second sheave at each of the deck units and coupled to the sliding unit to adjust a distance between the first sheave and the second sheave, a drive wire extending through the deck units and simultaneously wound around the first sheave and the second sheave of each of the deck units to deliver a driving force to the sliding unit, and a driver pulling the drive wire to cause the sliding unit to be slidably moved.

Abstract: An electronic device for image processing using an image conversion network comprises: a communication unit communicating with a user terminal to receive a nighttime image having an illuminance lower than a threshold level from the user terminal and a daytime image captured by a camera of the user terminal; and a control unit for inputting the nighttime image into an image conversion network to generate a daytime image having an illuminance equal to or higher than the threshold level, wherein the image conversion network includes: a pre-processing unit for generating an input image by reducing the size of the nighttime image at a predetermined ratio; a day/night conversion network for generating a first daytime image by converting an illuminance on the basis of the input image; and a resolution conversion network for generating a final image by converting a resolution on the basis of the first daytime image.

Abstract: A position tracking apparatus includes: a depth image obtaining unit for obtaining a depth image; a database created by collecting depth images received from the depth image obtaining unit; a feature extracting unit for extracting features from each pixel of the depth image; a classifier training unit for training a classifier in order to determine the position of the parts of the body by receiving a feature set for each part of the body as inputs which are extracted by using the feature extracting unit from all of the depth images in the database; and a position determination unit for extracting features for each pixel of the depth image received by the depth image obtaining unit using the feature extracting unit in a state in which the classifier training unit trains the classifier, and for tracking the three-dimensional position of each part of the body through the classifier.

Abstract: A weight shift feedback apparatus senses a weight shift in a golf swing motion of the user, collects, synchronizes and stores the sensed weight shift information, analyzes a weight value applied to each foot of the user with respect to time based on the stored data, and extracts important points of a swing. The weight shift of the user may be evaluated based on an address point, a backswing top point, an impact point, and a point where the weight value applied to each foot has a maximum value, and the feedback information for the evaluation may be provided to the user.

Abstract: A cocking loosening feedback method includes sensing sequential three-dimensional direction information of a golf club and three-dimensional direction information of the arm a user, analyzing the change of an angle between both three-dimensional information with respect to time, generating a cocking loosening evaluation variable based on the difference between the cocking loosening point and the impact point and the difference between the backswing top point and the impact point in the analyzed three-dimensional information, analyzing the evaluation variable based on a predetermined criterion to evaluate the cocking loosening, and providing its feedback information to the user.

Abstract: A position tracking apparatus includes: a depth image obtaining unit for obtaining a depth image; a database created by collecting depth images received from the depth image obtaining unit; a feature extracting unit for extracting features from each pixel of the depth image; a classifier training unit for training a classifier in order to determine the position of the parts of the body by receiving a feature set for each part of the body as inputs which are extracted by using the feature extracting unit from all of the depth images in the database; and a position determination unit for extracting features for each pixel of the depth image received by the depth image obtaining unit using the feature extracting unit in a state in which the classifier training unit trains the classifier, and for tracking the three-dimensional position of each part of the body through the classifier.

Abstract: An X-factor feedback apparatus senses three-dimensional direction information of the shoulder and the pelvis in a golf swing motion of a user, collects, synchronizes and stores the sensed three-dimensional direction information, analyzes the change of angle in the three-dimensional direction information based on the stored data information, extracts a backswing top point in the swing motion, evaluates the degree of twist of the shoulder and the pelvis based on the angle in the three-dimensional direction information of the shoulder and the pelvis at the backswing top point, and provides a feedback to the user.

Abstract: A weight shift feedback apparatus senses a weight shift in a golf swing motion of the user, collects, synchronizes and stores the sensed weight shift information, analyzes a weight value applied to each foot of the user with respect to time based on the stored data, and extracts important points of a swing. The weight shift of the user may be evaluated based on an address point, a backswing top point, an impact point, and a point where the weight value applied to each foot has a maximum value, and the feedback information for the evaluation may be provided to the user.

Abstract: A cocking loosening feedback method includes sensing sequential three-dimensional direction information of a golf club and three-dimensional direction information of the arm a user, analyzing the change of an angle between both three-dimensional information with respect to time, generating a cocking loosening evaluation variable based on the difference between the cocking loosening point and the impact point and the difference between the backswing top point and the impact point in the analyzed three-dimensional information, analyzing the evaluation variable based on a predetermined criterion to evaluate the cocking loosening, and providing its feedback information to the user.