• 제목/요약/키워드: Motion perception

검색결과 180건 처리시간 0.032초

ADD-Net: Attention Based 3D Dense Network for Action Recognition

  • Man, Qiaoyue;Cho, Young Im
    • 한국컴퓨터정보학회논문지
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    • 제24권6호
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    • pp.21-28
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    • 2019
  • Recent years with the development of artificial intelligence and the success of the deep model, they have been deployed in all fields of computer vision. Action recognition, as an important branch of human perception and computer vision system research, has attracted more and more attention. Action recognition is a challenging task due to the special complexity of human movement, the same movement may exist between multiple individuals. The human action exists as a continuous image frame in the video, so action recognition requires more computational power than processing static images. And the simple use of the CNN network cannot achieve the desired results. Recently, the attention model has achieved good results in computer vision and natural language processing. In particular, for video action classification, after adding the attention model, it is more effective to focus on motion features and improve performance. It intuitively explains which part the model attends to when making a particular decision, which is very helpful in real applications. In this paper, we proposed a 3D dense convolutional network based on attention mechanism(ADD-Net), recognition of human motion behavior in the video.

가상현실을 이용한 실내 인테리어 시스템 개발 (Development of a Interior Design System using Virtual Reality)

  • 신우철;장수경;송범규;권령미;송은지
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2014년도 추계학술대회
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    • pp.551-552
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    • 2014
  • 건물 및 주택의 가구배치나, 인테리어 디자인 등을 신규로 구성하거나 재배치하는 것은 고비용의 작업일 뿐만 아니라, 사용자가 정확히 판단하기 어렵다. 가상현실 시스템을 적용하면 공간적, 물리적 제약에 의해 현실 세계에서는 직접 경험하지 못하는 상황을 간접 체험할 수 있어 재배치에 대한 비용 및 시행착오의 오류를 줄일 수 있다. 따라서 본 논문에서는 EON Studio를 이용하여 건물 내부의 인테리어를 바꿔가며 디스플레이 할 수 있는 실내 인테리어 시스템 프로토타입을 제시하고자 한다. 현실 건물 내부와 가구를 EON Studio를 통해 구축한 후 회전 및 이동을 통해 재배치 도록 하였다. 구현된 시스템을 통해 제안된 인터페이스가 공간 배치 응용 분야에서 유용성 이 있음을 확인하였다.

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정보처리접근에서의 율동적 개시 (Rhythmic Initiation in the respect of Information Processing approach)

  • 최재원;정현애
    • PNF and Movement
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    • 제9권1호
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    • pp.55-63
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    • 2011
  • Purpose : This study was to investigate the application of Rhythmic Initiation(RI) in the respect of information processing in motor learning. Methods : A computer-aided literature search was performed in PubMed and adapted to the other databases and the others were in published books. The following keywords were used: Rhythmic Initiation, attention, memory, motor accuracy, feedback, motor learning, motor control, PNF, cognition. Results : The characterization of RI is rhythmic motion of limb or body through the desired range, starting with passive motion and progressing to active resisted movement. This study suggested that the relationship between of RI and motor learning through the respect of information processing, memory, attention and motor accuracy. Conclusion : Only Rhythmic Initiation, specifically focused on the effects of information processing approach, suggesting that RI can be positively influeced on sensory-perception, attention, memory, motor accuracy. however, it is unclear whether positive effects in the laboratory and field can be generalized to improve. In addition, sustainability of motor learning with RI remains uncertain.

ROS 기반 자율주행 알고리즘 성능 검증을 위한 시뮬레이션 환경 개발 (Development of Simulation Environment for Autonomous Driving Algorithm Validation based on ROS)

  • 곽지섭;이경수
    • 자동차안전학회지
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    • 제14권1호
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    • pp.20-25
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    • 2022
  • This paper presents a development of simulation environment for validation of autonomous driving (AD) algorithm based on Robot Operating System (ROS). ROS is one of the commonly-used frameworks utilized to control autonomous vehicles. For the evaluation of AD algorithm, a 3D autonomous driving simulator has been developed based on LGSVL. Two additional sensors are implemented in the simulation vehicle. First, Lidar sensor is mounted on the ego vehicle for real-time driving environment perception. Second, GPS sensor is equipped to estimate ego vehicle's position. With the vehicle sensor configuration in the simulation, the AD algorithm can predict the local environment and determine control commands with motion planning. The simulation environment has been evaluated with lane changing and keeping scenarios. The simulation results show that the proposed 3D simulator can successfully imitate the operation of a real-world vehicle.

Temporal Anti-aliasing of a Stereoscopic 3D Video

  • Kim, Wook-Joong;Kim, Seong-Dae;Hur, Nam-Ho;Kim, Jin-Woong
    • ETRI Journal
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    • 제31권1호
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    • pp.1-9
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    • 2009
  • Frequency domain analysis is a fundamental procedure for understanding the characteristics of visual data. Several studies have been conducted with 2D videos, but analysis of stereoscopic 3D videos is rarely carried out. In this paper, we derive the Fourier transform of a simplified 3D video signal and analyze how a 3D video is influenced by disparity and motion in terms of temporal aliasing. It is already known that object motion affects temporal frequency characteristics of a time-varying image sequence. In our analysis, we show that a 3D video is influenced not only by motion but also by disparity. Based on this conclusion, we present a temporal anti-aliasing filter for a 3D video. Since the human process of depth perception mainly determines the quality of a reproduced 3D image, 2D image processing techniques are not directly applicable to 3D images. The analysis presented in this paper will be useful for reducing undesirable visual artifacts in 3D video as well as for assisting the development of relevant technologies.

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요통과 천장관절기능이상에 대한 고찰 (A Study on Low Back Pain with Sacroiliac Joint Dysfunction)

  • 오승길
    • 대한물리치료과학회지
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    • 제5권3호
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    • pp.697-706
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    • 1998
  • Motion at the sacroiliac joints(SIJ) has been reported in the medical literature since the mid-19th century. However, for many years authorities vie~d that no movement occurred at the sacroiliac joints and therefore were not clinically significant. Recent contributions from both the basic and clinical sciences caused a change in perception of the role of the sacroiloiac joint in low back pain(LBP). Movement within the sacroiliac joint is now generally recognized, although it is only a small amount. Controversy continues as to the type of motion available and the axes of motion, and continues as to the ability of a clinician to identify a significant sacroiliac dysfunction. Dysfunction of the pelvic girdle is complex and not easily understood. It is common to find serveral dysfunctions within the same pelvic girdle. Each needs to be individually diagnosed and appropriately treated. The diagnostic and therapeutic system designed by Philip E. Greenmam, D. O. allows the operator to deal with any combination of physical findings that are found within the pelvic girdle Restoration of pelvic girdle function within the walking cycle is a major therapeutic goal, particularly from the biomechanical postural-structural model.

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Emotional Image Quality Evaluation Technology for Display Devices

  • Lee, Eun-Jung;Lee, Seung-Bae
    • 조명전기설비학회논문지
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    • 제23권3호
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    • pp.10-17
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    • 2009
  • In this paper, we explained the relation between evaluating display device and emotional image quality evaluation in human perceptual view. It is also suggested two emotional image quality evaluation method of display reflecting human visual function. One is the color space of CIECAM02 and the other is capturing moving image. It is necessary to standardize the evaluation methods of image quality based on emotional evaluation.

모션그래픽을 이용한 3D 공간감 연출에 관한 연구 (A Study on the 3D Space Perception available Motion Graphic)

  • 주헌식
    • 한국콘텐츠학회:학술대회논문집
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    • 한국콘텐츠학회 2014년도 추계 종합학술대회 논문집
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    • pp.269-270
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    • 2014
  • 본 연구에서는 모션그래픽 응용으로 3D 공간감 연출에 대해서 제안하였다. 3D 공간에 입체적 효과를 연출하여 작품 전시회 효과를 나타내고, 다양한 공간 효과를 연출하여 2D의 평면 효과가아닌 3D 공간 효과를 연출함으로써 다양한 3D입체감 효과를 높여 방송, 다큐 같은 영상 전시에 응용할 수 있다고 제안한다.

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Large Area Flicker Metric for Display System

  • Shin, Byung-Hyuk;Oh, Jae-Ho;Nam, Hyoung-Sik;Kim, Nam-Deog
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.95-97
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    • 2007
  • Large area flicker is one of the most annoying image defects, and it is an inherent characteristic of impulsively driven displays such as CRTs. Recently, LCDs have also adopted impulsive driving methods for improved motion picture quality, therefore LCDs can also show large area flicker. Existing metrics do not account for the non-linearity of human brightness perception. This paper presents an improved large area flicker metric to more accurately quantify large area display flicker performance.

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Rogers 이론에 근거한 가족양상 사정지침개발 (Development of a Family Pattern Appraisal to Guide a Rogerian Nursing Practice)

  • 이광옥;한영란;김희정
    • 대한간호학회지
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    • 제25권4호
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    • pp.751-773
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    • 1995
  • We, clinical nurse specialists practising and guiding student practice in a Community health nursing clinic, wanted to develop a family pattern appraisal consistent with Rogers' conceptual system, the nursing model guiding our practice. We use Rogers' model because it is harmonious with the traditional Korean view of the one human, natural and cosmic world. The purpose of our research was to contribute to science - based nursing practice, not only, one helpful model, but also a model of how to use, in guiding practice, a conceptual system which reflects nurse practitioners' philosophy of nursing, is intellectually satisfying, and enriches meaning in daily nursing life. The research objectives were to review the literature on Rogers' model and analyse it according to Kim's five - level analytical framework, to explore Rogers' definition of family, to review appraisals based on Rogers' model, and to develop a family appraisal which is culturally appropriate for use in our community. This work including the use of the appraisal and its refinement with families in our practice which was done during 1994 and 1995, in Seoul, in the Capital of the Republic of Korea. At the highest level of analysis, Rogers conceptual system emphasizes acausality and multidimentional meaning ; the world view is characterized by process, movement and wholeness. The epistemology Is one of holism and the knowledge base includes all forms of experience, from sensory to mystical, objective, and subjective. At the metaparadigm level, nursing focuses on the unitary human being and the environment. At the level of nursing philosophy, the model identifies human being, nursing, nurse, and illness and health. At the paradigm level the model assumes the irriducibility of the human to parts, noncausality and continual change. Rogers' practice methodology consists of pattern manifestation appraisal and deliberative mutual patterning. Under-standing patterns and patterning of people is the key to helping them achieve their potential. At the theory level, the basic assumptions, key concepts, and homeodynamic principles were identified. Rogers states the family energy field is an undividable, four-dimensional negentropic energy field which is in a larger envircinmental field show-ing such characteristics as cannot be predicted by knowledge of individual family members. Based on the word of Rogers scholars, we chose Rogers' correlates of patterning to understand the family unit as a whole-frequency, rhythms, motion, time perception, sleeping-waking beyond waking, pragmatic -imaginative-visionary to develop the appraisal. We, also used some of Barrel's (1988) criteria including interpersonal network and professional health care access and use, and Cordon's (1982) criteria including self perception - self concept modified to fit the family. Our family Pattern appraisal included 1. Influencirg data, 2. Professional health care access and use, 3. Family self perception-self concept, 4. Family interpersonal network, 5. Sleep-wake-be-yond waking, 6. Pragmatic-imaginary-visionary, 7. Family frequency and rhythm, 8. Family motion, 9. Family time perception. The appraisal was used with four families and modified to eliminate overlap and to make it possible for the family member to express themselves more easily. We plan to gain more experience with the appraisal toward further development of the tool.

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