Abstract: Provided is a hologram printing method and apparatus using a hologram medium light efficiency map. A hologram printing method according to an embodiment emits a laser to a hologram medium, acquires an image by photographing light diffracted from the hologram medium, generates a light efficiency map of the hologram medium from the acquired image, and records hogels on the hologram medium by referring to the generated light efficiency maps of the hologram medium. Accordingly, light efficiency is measured on each hogel area, and hologram printing is performed by adjusting an intensity of a laser of each wavelength according to a hogel, so that uniformity of luminance and color of a hologram printing result can be enhanced.

Abstract: There is provided an object attribute-based watermarking method for preventing leakage of a digital content. A video watermarking method according to an embodiment may acquire a requested video and watermarking information upon receiving a request for video streaming from a user, may determine some of objects appearing in the video according to the watermarking information, may transform attributes of the determined objects, and may stream the transformed video. Accordingly, by watermarking an attribute of an object appearing in a video differently according to a user and providing the video, a watermark may be difficult to perceive, robustness against various attacks may be guaranteed, and a leakage path of a content may be checked.

Abstract: There is provided a thin optical system for real-world occlusion in an augmented reality display. The optical system according to an embodiment includes: a first DCRA configured to reflect light beams focused on holes; a mask positioned on a light emitting surface of the first DCRA to pass or block the light beams emitted from the first DCRA; and a second DCRA configured to reflect the light beams which are focused on holes after passing through the mask. Accordingly, the optical system can implement real-world occlusion in the unit of pixel while having a thin form factor.

Abstract: There is provided a learning method and system of a backbone network for visual intelligence based on self-supervised learning and multi-head. A network learning system according to an embodiment generates a plurality of first modified vectors by modifying a first feature vector outputted from a teacher network, generates a plurality of second modified vectors by modifying a second feature vector outputted from a student network, calculates a loss by using the first modified vectors and the second modified vectors, and optimizes parameters of the student network. Accordingly, the effect of learning by knowledge distillation may be enhanced by training the backbone network for visual intelligence like group learning is performed by various teacher networks and student networks.

Abstract: A sensor includes a base material and a through-hole formed to pass through the upper surface and the lower surface of the base material. The sensor may also include a conductive thread sensor including conductive thread that passes through the through-hole. The pressure sensor is implemented through a structural combination of the conductive thread and the base material so that the degree of design freedom can be effectively increased in the application of a variety of recent wearable flexible materials.

Abstract: There are provided a method and a system for selecting an optimal synchronization broker for each workload. A system for selecting an optimal synchronization broker for each workload according to an embodiment includes: a storage unit including a database that contains specialist recommendation information including information on a correct protocol that is recommended by a specialist with respect to a service specification and data transmission requirements; and a processor configured to determine an optimal in-bound protocol and an optimal out-bound protocol according to the data transmission requirements through a decision tree model that is trained by using the specialist recommendation information as training data.

Abstract: There is provided a data interworking method between a oneM2M system and an NGSI-LD system. The data interworking method according to an embodiment of the present disclosure includes: retrieving, by an IPE, resources in the oneM2M system that perform data interworking with the NGSI-LD system; retrieving labels of the retrieved resources; acquiring a mapping-rule from the retrieved labels; and storing the acquired mapping-rule. Accordingly, data interworking between data platforms using different standards is performed more easily, so that technology may go one step further to the goal of interconnecting and servicing all things in a global environment as IoT ultimately pursues.

Abstract: The present invention relates to an image inpainting apparatus and an image inpainting method, the image inpainting apparatus including: a background inpainting part configured to generate a background-inpainted image by carrying out inpainting on a background with respect to an input image in which a region to be inpainted is set up; an object inpainting part configured to generate an object image by carrying out inpainting on an object; and an image overlapping part configured to generate an output image by causing the background-inpainted image and the object image, which are generated, to overlap each other.

Abstract: A bio sensor using a FET element and an extended gate, and an operating method thereof are disclosed. A biosensor using a field effect transistor (FET) device and an extended gate electrode according to the present invention is characterized by comprising: an extended gate electrode connected to the FET element; a sensing electrode made of the same material as the extended gate electrode and on which a receptor antibody selectively recognizing a target molecule is fixed; and a reference electrode that maintains a constant potential and is selectively connected to the sensing electrode.

Abstract: There is provided a method for determining road conditions by sharing sensor data and object recognition results in a V2X communication environment. According to an embodiment, a road condition determination method may acquire sensor data, may recognize objects by analyzing the acquired sensor data, may receive sensor data and object recognition results from external terminals, may determine reliability on the received object recognition results and sensor data, and may determine road conditions, based on the acquired sensor data and object recognition results and object recognition results and sensor data which are given reliability.

Abstract: There is provided a temperature data-based gas usage correction method for a gas data platform. According to an embodiment, an energy usage correction method may collect gas meter reading data, may calculate energy usage based on the gas meter reading data, may collect temperature data, and may correcting the calculated energy usage. Accordingly, when it is impossible to obtain temperature in reading a gas meter, temperature compensation may be performed by linking temperature data collected separately and gas usage, and gas usage may be more exactly measured by correcting gas usage by compensating for temperature variation caused by a difference in seasons, installation regions in a gas data platform.

Abstract: There is provided a gas AMI data-based household gas energy consumption analysis and comparison method. An energy consumption analysis method according to an embodiment may include: collecting AMI data of a plurality of households; collecting household information of the plurality of households; analyzing energy consumption of each household, based on the collected AMI data; and providing household information of households that have similar energy consumption, based on a result of analyzing. Accordingly, information of other households that use the same/similar energy or have the same/similar energy consumption pattern may be fed back as comparison information, so that efficient use of energy and energy saving may be effectively induced.

Abstract: A gesture detection system is disclosed. The gesture detection system includes a gesture detection sensor including a base sheet formed of a skin-conformable material, to be tightly attached to a skin, a sensing part formed at the base sheet, to measure deformation of the skin, and an electrode pattern formed at the base sheet and connected, at one end thereof, to the sensing part, to transmit an electrical signal varying in accordance with the deformation of the skin, a reader module connected to the gesture detection sensor, to read the electrical signal, and a computing device configured to receive the electrical signal from the reader module, thereby recognizing a gesture of the user. Through disposable use of the gesture detection sensor and multiple use of the reader module and the computing device, a hygienic gesture input environment may be provided to a plurality of users at low cost.

Abstract: There are provided a cloud management method and a cloud management apparatus for rapidly scheduling arrangements of service resources by considering equal distribution of resources in a large-scale container environment of a distributed collaboration type. The cloud management method according to an embodiment includes: receiving, by a cloud management apparatus, a resource allocation request for a specific service; monitoring, by the cloud management apparatus, available resource current statuses of a plurality of clusters, and selecting a cluster that is able to be allocated a requested resource; calculating, by the cloud management apparatus, a suitable score with respect to each of the selected clusters; and selecting, by the cloud management apparatus, a cluster that is most suitable to the requested resource for executing a requested service from among the selected clusters, based on the respective suitable scores.

Abstract: There is provided a method of data replication between management modules in a rugged environment. According to an embodiment of the present disclosure, an edge server management module replication method includes: a step of collecting, by a first management module, environment information of an edge server; a step of managing, by the first management module, the edge server, based on the collected environmental information; a first storage step of storing, by the first management module, management data related to the edge server in a repository of the first management module; and a second storage step of storing, by a second management module, the management data stored at the first storage step in a repository of the second management module.

Abstract: This application relates to a self-reference point setting type blood component measuring method and apparatus using light. In one aspect, the method includes applying light to a skin of a subject to be measured and setting a reference point on a surface of the skin adjacent to a point at which the light is applied. The method further includes calculating a concentration of a blood component from a light intensity measured at the reference point and a light intensity measured at another point. According to some embodiments, the accuracy and precision of measurement are increased in measuring blood in a non-invasive manner.

Abstract: There are provided a method and a system for image segmentation utilizing a GAN architecture. A method for training an image segmentation network according to an embodiment includes: inputting an image to a first network which is trained to output a region segmentation result regarding an input image, and generating a region segmentation result; and inputting the region segmentation result generated at the generation step and a ground truth (GT) to a second network, and acquiring a discrimination result, the second network being trained to discriminate inputted region segmentation results as a result generated by the first network and a GT, respectively; and training the first network and the second network by using the discrimination result. Accordingly, region segmentation performance of a semantic segmentation network regarding various images can be enhanced, and a very small image region can be exactly segmented.

Abstract: Provided is a 5G dual port beamforming antenna. The beamforming antenna according to an embodiment of the present disclosure includes a plurality of patch antennas, and the patch antenna includes: a first patch positioned on an upper portion; a second patch positioned on a left side under the first patch and having a plurality of feeding ports formed thereon; a third patch positioned on an upper portion of a right side of the second patch; and a fourth patch positioned on a lower portion of the right side of the second patch. Accordingly, 3D wide angle beamforming is possible in an antenna to be used in 5G mobile communication systems, military radar systems, etc.

Abstract: An antenna-integrated high-frequency semiconductor package, including a substrate including a recess concave on a first surface and a first through-hole penetrating from the first surface to a second surface, a ground layer configured to cover the first surface of the substrate and the recess, a semiconductor chip mounted on the ground layer of the recess, an insulating layer configured to entirely cover the substrate, the ground layer, and the semiconductor chip, and a conductive layer formed on the insulating layer, the conductive layer including an electrode pattern connected to the semiconductor chip, an antenna formed on a second surface of the insulating layer, and a signal via configured to transmit an electrical signal between the electrode pattern and the antenna through a second through-hole formed in the first through-hole to penetrate from the first surface to the second surface of the insulating layer.

Abstract: An apparatus and method for supporting a precision time synchronization protocol of a stealth clock type are provided. The method may be performed by a stealth clock follower device and may include transmitting a sync message received from a neighbor device to an end-follower device, receiving a delay-request message from the end-follower device, and updating a residence time in a correction field of the received delay-request message. The method may also include transmitting the updated delay-request message to a leader device, receiving a delay-response message from the leader device, and performing time synchronization based on a time of the leader device by using an ingress time of the sync message, an egress time of the updated delay-request message, and time information contained in the sync message and the delay response-message. The method may further include transmitting the delay-response message to the end-follower device for time-synchronization.