• Journal of Broadcast Engineering
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• v.20 no.1
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• pp.26-39
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• 2015

UHD (Ultra High Definition) has been developed and standardized over the past few years and considered as a key of the next generation broadcasting. Since major sporting events that attract many viewers have been good opportunities for applying and promoting new broadcasting technology, KBS (Korean Broadcasting System) has carried out live 4K terrestrial broadcasting of three big sports events in 2014, the KBL (Korean Basketball League) finals, the 2014 FIFA World Cup, and the 2014 Incheon Asian Games. Especially, 4K UHD live coverage of the KBL finals was the world's first live 4K terrestrial broadcasting, and people could enjoy the World Cup and the Asian Games with UHDTV at home. In this paper, the overall live production and data transmission of the sporting events is described, including on-location live production, live HEVC (High Efficiency Video Coding) encoding, SFN (Single Frequency Network) transmission, as well as experimental IP transmission of uncompressed 4K video via KREONET, a national R&D network run by KISTI (Korea Institute of Science and Technology Information).

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.1
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• pp.121-129
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• 2021

In addition to yellow dust occurring in China, fine dust has become a hot topic in Korea through news and media. Although there is fine dust generated from the outside, the purchase rate of air purifier products is increasing as external fine dust flows into the inside. The air purifier uses a filter internally, and the sensor notifies the user through the LED alarm whether the filter is replaced. However, there is currently no product measuring how much the filter rate is reduced and determining the pressure of the blower to operate. Therefore, in this paper, data are generated directly using Arduino, fine dust sensor, and differential pressure sensor. In addition, a program was developed using Python programming to calculate how old the filter is and to analyze the wind power of the blower according to the filter rate by calculating the measured dust and pressure values.

• Journal of Broadcast Engineering
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• v.17 no.6
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• pp.1040-1047
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• 2012

In this paper, we propose a ball tracking algorithm robust against occlusion in broadcasting soccer video sequences. Soccer ball tracking is a challenging task due to occlusion, fast motion and fast direction changes. Many works have been proposed based on ball trajectory. However, this approach requires heavy computational complexity. We propose a ball tracking algorithm with occlusion handling capability. Initial ball location is calculated using the circular hough transform. Then, the ball is tracked using template matching. Occlusion is handled by matching score. In occlusion cases, we generate a set of ball candidates. The ball candidates which exist in the previous frame were removed. On the other hand, the new appearing candidate is determined as the ball. Experiments with several broadcasting soccer video sequences show that the proposed method efficiently handles the occlusion cases.

• Journal of Broadcast Engineering
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• v.24 no.4
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• pp.553-563
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• 2019

As the number of videos uploaded on live streaming platforms rapidly increases, the demand for providing highlight videos is increasing to promote viewer experiences. In this paper, we present novel methods for predicting highlights using chat logs and audio data in videos. The proposed models employ bi-directional LSTMs to understand the contextual flow of a video. We also propose to use the features over various time-intervals to understand the mid-to-long term flows. The proposed Our methods are demonstrated on e-Sports and baseball videos collected from personal broadcasting platforms such as Twitch and Kakao TV. The results show that the information from multiple time-intervals is useful in predicting video highlights.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.38 no.2
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• pp.1-8
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• 2001

In this paper, we propose an algorithm which estimates the displacements and velocities of objects in the soccer field from the soccer image sequences. Assuming the time interval of an object movement is given, we transform the object positions into those in the soccer field model and compute the distance and the velocity. When four corresponding pairs of the feature points, such as the crossing points of the lines in the soccer field, exist and three of them are not on a line, we transform the object positions in the soccer image into those in the soccer field by using the perspective displacement field model. In addition, when the soccer image has less than four feature points, we first transform the object positions into those in the image which has more than four feature points, and then transform the positions into those in the soccer field again. To find the coordinate transformation between two images, we estimate the panning and zooming for consecutive images in the sequence. In the experimental results, we quantitatively evaluated the estimation accuracy by applying our algorithm to the synthetic. soccer image sequences generated by graphic tools, and applied it to the real soccer image sequences for broadcasting to show its usefulness.

• Journal of Korean Library and Information Science Society
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• v.53 no.4
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• pp.71-100
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• 2022

The purpose of this study is to analyze the performance of the Gyeonggi province book sharing regular delivery project for pre-schoolers in 2021, analyze the problems of the project, and suggest improvement measures to help the preparation of policies for the promotion of reading culture in Gyeonggi province. As a result of the survey, the necessity and satisfaction of the project were found to be very high for both the caregivers and the reading coaches. In particular, in the case of caregivers, the higher the amount of reading after the project, the higher the need for and satisfaction with the project. It was found that they wanted to participate in programs such as regular book delivery. Even in the convergence of expert opinions, it was evaluated that there was a positive change in the perception of parenting by reading by caregivers, and that the necessity and satisfaction of this project were very high due to the development of infant-parent interaction. However, in the self-evaluation of the project manager and the implementing organization, it was evaluated that better results could be achieved only when the project was carried out through thorough planning and preparation in advance. Through this, for the continuity of Gyeonggi province regular delivery of children's book packages, improvement plans were presented and Gyeonggi-do's reading culture promotion policy was proposed.

• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.713-719
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• 2007

한 미디어를 다른 미디어에서 표상하는 것을 재매개 remediation (이재현, 2006)라고 한다. 보통 재매개는 원 소스 멀티 유즈 혹은 재목적화 repurposing로 알려져 있다. 한 미디어가 다른 미디어를 통해 표상된다는 사실은 한가지 컨텐츠를 다양한 창구 혹은 채널을 통해 내보냄으로써 해당 컨텐츠의 가치를 극대화한다는 경영학적 의미뿐만 아니라, 미학적 사회학적 의미를 가진다. 특정한 미디어를 통해 보여지는 컨텐츠가 이질적인 다른 미디어를 통해 표상되면, 컨텐츠 뿐만 아니라 표상되는 미디어도 쉽게 인식하게 되면서 미학적 의미를 갖는다. 가령 액자 속에 들어있는 풍경화를 보는 순간, 액자라는 창을 넘어서 그림이 표상하는 풍경을 보려고 하지만, 액자 속의 퐁경화를 텔레비전을 통해 보게 되면, 시청자는 그림을 둘러싼 액자 혹은 그 그림이 위치한 미술관을 인식하기 마련이다. 또한 새롭게 등장하는 미디어와 그 종사자는 기존 미디어 혹은 종사자들의 사회적 지위를 표상하면서 기존 미디어의 지위를 이어받으려고 하면서 사회적 의미를 갖는다. 컴퓨터 게임이라는 미디어가 텔레비전을 통해 방송되는 e-sports는 디지털 컨텐츠의 전형적 재매개의 예가 될 수 있다. e-sports중계는 컴퓨터 게임 화면만을 보여주지 않는다. 게이머의 표정, 게임의 제반 정보를 나타내는 게임 화면의 세부 창들, 관중들의 반응, 해설자의 해설, 리플레이 화면 등을 동시 혹은 선형적으로 보여줌으로써, 시청자로 하여금 끊임없이 컴퓨터 게임이라는 미디어를 인식하게 한다. 또한 e-sports는 이름에서도 드러나듯이, sports의 사회적 지위를 표상한다. e-sports 플레이어들이 선수로 불리고, 이들이 프로 게임단을 조직해 활동한다. e-sports(스타크래프트의 경우)는 상설 경기장에서, 종종 체육관에서 대규모 관중들 앞에서 보여짐으로써 기존 sports 경기를 표상한다. 재매개는 새로운 미디어가 등장하면서 자연스럽게 취하는 전략이다. 새로운 미디어가 쏟아지는 디지털 미디어 시대, e-sports의 재매개 전략을 살펴봄으로써 새로운 미디어가 미학적, 사회적으로 자리잡을 수 있는 함의를 얻을 수 있다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.20 no.1
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• pp.177-186
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• 2020

This paper deals with the car paint sequencing problem (CPSP) that the entrance sequence is to same colored group with maximum sequenced cars for the buffer arriving cars from the body shop. This problem classified by NP-complete problem because of the exact solution has not obtained within polynomial time. CPSP is aim to minimum pugging number that each pugging must be performs at color changing time in order to entirely cleaning the remaining previous color. To be obtain the minimum number of moving distance with window concept and minimum number of pugging, this paper sorts same color and arriving sequence. Then we basically decide the maximum length section color time to winner team using stage race method. For the case of the loser team with no more racing or yield to loser team and more longer stage in upcoming racing, the winner team give way to loser team. As a result, all cars(runners) are winner in any stage without fail. For n cars, the proposed algorithm has a advantage of simple and fast with O(nlogn) polynomial time complexity, this algorithm can be get the minimum number of moving distance and purging for all of experimental data.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2020.11a
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• pp.354-357
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• 2020

최근 스포츠 경기나 차량 블랙박스 등에서 비디오를 이용한 판정이 점차 확대되고 있지만, 일반 카메라로 촬영된 비디오에서 정확한 판정을 하기 어려울 때가 빈번히 발생한다. 초고속 카메라로 촬영한 슬로우 모션 비디오를 이용할 수 있다면 판정의 정확성을 향상시킬 수 있을 것이다. 본 논문에서는 일반 카메라로 촬영한 비디오로부터 마치 초고속 카메라로 촬영한 것과 같은 슬로우 모션 비디오를 생성하여 제공하는 서비스를 제안한다. 제안 방법은 NVIDIA에서 개발한 Super Slomo 기술을 기반으로, 초당 30장의 표준 비디오를 초당 60장에서 240장까지의 고품질 슬로우 모션 비디오로 변환한다. 이 기술은 시간적으로 이웃한 두 영상을 입력하여 딥 러닝 기반으로 중간 프레임을 보간함으로써 프레임율을 향상시킨다. 또한 본 논문에서는 Super Slomo 기술에 FP16을 적용하여 처리속도를 향상 시켰으며, 웹 서버를 이용하여 비디오를 업로드하고 슬로우 모션으로 변환된 비디오를 다운로드 할 수 있는 사이트를 구현했다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.24 no.2
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• pp.29-34
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• 2024

Since the outbreak of COVID-19, there has been a surge in sports conducted through online platforms due to the increase in remote and non-contact activities. Billiards, being suitable for online platforms, has received much attention, leading to research on detecting the position and trajectory of balls. In this paper, we propose a new method utilizing machine vision to detect the position of the balls accurately. The proposed method detects the outline of the ball using the Canny edge detection and then employs simple correlation to determine its position. This correlation-based approach offers satisfactory system performance and is easily applicable in practical systems due to its low implementation complexity and robustness to noise.