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Article type: Index
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Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Seiichi GOHSHI, Kenkichi TANIOKA
Article type: Article
Session ID: 1-1
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Super Resolution Image Reconstruction (SRR) is the most common of the Super Resolution technologies. However, the algorithm of SRR is based on aliasing. SRR cannot improve resolution if the image does not have much aliasing. Recently photoelectric devices have been replaced from tubes to solid devices, CMOS and CCD. These devices cause some aliasing depend on the device. According to the recent research the size limitation of SRR is double. In this paper the relationship between SRR and solid photoelectric devices is discussed.
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Naruaki SATO, Nobuyuki UMEZU
Article type: Article
Session ID: 1-2
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Photomosaic is one of artistic representations, which is produced by arranging hundreds of small photographs to form one target image. In conventional methods, material photographs are too small to recognize. We propose a technique for solving such a problem by using boundaries in both materials and the target image.
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Kohei MATSUZAKI, Yusuke UCHIDA, Shigeyuki SAKAZAWA
Article type: Article
Session ID: 1-3
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In this paper, we propose a new geometric verification method. In the proposed method, we correct difference of orientations of local features due to the perspective projection, and we verify the homography matrix using corrected orientations. The effectiveness of the proposed method is confirmed in experiments.
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Masaki TAKAHASHI, Masahide NAEMURA, Mahito FUJII, James J. LITTLE
Article type: Article
Session ID: 1-4
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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A new feature-representation method for action recognition in video sequences, which conveys spatio-temporal information of local motion features, is proposed. The method considers the co-occurrence of camera motions and human actions. It was experimentally confirmed that the proposed method can robustly detect specific human actions in sports broadcast videos.
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Matsunobu NOMURA, Yoichi KAGEYAMA, Chikako ISHIZAWA, Makoto NISHIDA
Article type: Article
Session ID: 1-5
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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At night, electric signboards are more clearly visible, but it is still necessary to consider conditions that may affect electric signboards, such as stains or lighting irregularities. Therefore, we propose a method for extracting a character sequence from an electric signboard in nighttime scene images.
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Fuhui Wang, Kohei Inoue, Kiichi Urahama
Article type: Article
Session ID: 1-6
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We present an artistic stylization technique for generating op-art images by discriminating segmented regions by directions of two-tone lines. Both of the number of colors and directions of lines are two, hence their combination is four which is sufficient for painting arbitrarily segmented images. Two lines are weaved at their cross points. The unsharp masking is applied for increasing the contrast of op-art images.
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Kohei Inoue, Kenji Hara, Kiichi Urahama
Article type: Article
Session ID: 1-7
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We propose a method for enhancing a color image by equalizing its brightness histogram and maximizing the saturation of each pixel color in its equihue plane.
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Tetsuya OKUDA, Hitoshi KITAZAWA
Article type: Article
Session ID: 1-8
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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For robust moving object extraction and tracking, we should consider not only RGB values of input images but also shape information of objects. If object shapes don't change suddenly, matching positions on the cost matrix of exclusive block matching align nearly on a line. We propose a method for obtaining correspondence of feature points by applying this matching position constraint.
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Kenta TANAKA, Terumasa AOKI
Article type: Article
Session ID: 1-9
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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During the process of forming facial expression, there is a frame that includes the critical changes. In this paper, we propose a detecting method of this frame (effective frame) by using acceleration optical flow. By analyzing this frame, we can recognize facial expression more efficiently than existing methods.
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Takayuki Fujimura, Daisuke Sugimura, Tadaaki Hosaka, Takayuki Hamamoto
Article type: Article
Session ID: 1-10
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In this paper, we propose the novel method of detection and tracking leading vehicles. The framework of our method is 1) detecting traffic lanes, 2) searching vehicles only in the traffic lanes, and 3) tracking the captured vehicles in subsequent frames. Experimental results quantitatively and qualitatively show the effectiveness of the proposed method.
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Yusuke UCHIDA, Shigeyuki SAKAZAWA
Article type: Article
Session ID: 1-11
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In this paper, we propose to solve a large-scale image retrieval problem as a classification problem with a large number of classes. Escpecially, we apply the local naive-Bayes nearest-neighbor method in measuring image similarity, and experimentally show its effectiveness.
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Yudai NAKAMURA, Nobuhiko YAMAGISHI, Tomonori FUKUTA, Yoshiaki KUSUNOKI ...
Article type: Article
Session ID: 2-1
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Recently, hand gesture User Interface(UI) which enables people to control digital devices intuitively became a vivid research field. When people make gestures, it is not necessary to use any control panels. It means people do not have to gaze at control panels when they control digital devices by hand gestures. From this point, we think hand gesture UI is useful to interact with a car multimedia system, because people have to control the car multimedia system without gazing at control panels while driving. We built a hand gesture recognition system for the car multimedia system and confirmed the availability.
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Kazushige HIROI, Hiroyoshi MORITA
Article type: Article
Session ID: 2-2
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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The method of indexing scenes with subtitle information contained in TV programs and efficient TV program viewing system will be proposed. This method and system can show keywords about scenes contained in recorded TV contents with low calculation resources and enables users to watch only interested scenes by the simple selection of keywords.
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Mamoru DOKE, Hiroyuki KANEKO, Seiki INOUE
Article type: Article
Session ID: 2-3
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We have developed a prototype system which enables SNS users to create derivative CG-based video content easily and repeatedly from the existing content.
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Ryo HATAOKA, Masataka IMURA, Yuki URANISHI, Yoshihiro KURODA, Osamu OS ...
Article type: Article
Session ID: 2-4
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Electronic whiteboards recently spread in a classes and meetings. In this article, we propose the system of electronic whiteboards which can change character's size and color automatically based on voice, focusing on that voice has not only a character information but a volume and a frequency.
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Hiroyuki KAWAKITA, Hiroyuki KANEKO, Seiki INOUE, Arisa FUJII, Toshio N ...
Article type: Article
Session ID: 2-5
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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This paper describes our developing system for multi device link service "Augmented TV" that provides a new viewing experience by using a mobile camera to capture images of a TV screen. We designed a production platform for the system focused on especially accurate synchronization between a captured TV program and 3DCG content on a mobile screen.
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Bin ZHANG, Masahide KANEKO
Article type: Article
Session ID: 2-6
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Toward an intelligent delivery robot, the most important task for the robot is to find the receiver out under real-life environments. Especially under a complex environment, the work becomes more challengeable. This paper presents a searching method based on efficient interaction with a possible receiver. Let the robot monitor the environment first and call out the receiver. By making full use of the responding time by the receiver, the robot can get the changing information in the environment. The robot can locate the receiver after analyzing the changed audiovisual information.
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Haruhisa Kato, Tatsuya Kobayashi, Hiromasa Yanagihara
Article type: Article
Session ID: 2-7
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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This paper proposes an intuitive 3D input interface that can handle various operations based on finger image recognition. It receives continuous analog input by detecting a knuckle of the user's clenched fist. In contrast to the conventional methods, the proposed method brings not only stable 3D positioning but also quick clicking with a small finger gesture. In order to evaluate operability, we conducted a user experiment: a time trial for target selection. The subjects completed the task with the proposed controller in 25% less time than with a conventional method.
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Fumihiko FUJIKI, Shingo FUKAI
Article type: Article
Session ID: 2-8
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Takaki Matsuda, Kenji Hara, Kohei Inoue, Kiichi Urahama
Article type: Article
Session ID: 3-1
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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It is widely known that especially rough surfaces exhibit reflectance that is not well modelled by Lambert's law. In this case, standard Lambertian-based shape-from-shading methods cannot be applied straightforwardly to such rough surfaces. In this paper, we propose a novel method for simultaneously recovering the diffuse reflectance property and the Lambertian corrected images based on the Oren-Nayar model of diffuse reflectance.
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Shoei KOIZUMI, Norio TAGAWA, YiHsin HO, Kan OKUBO
Article type: Article
Session ID: 3-2
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We use the analogy of "fixational eye movements" for the camera motion and proposed "differential-formed shape recovery method" In this study, we aim to improve its recovery accuracy by selecting the suitable resolution of the image for constructing the gradient equation system. The essential performance of this technique is confirmed through simulations using artificial images.
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Haruto SUZUKI, Sota SUZUKI, Mie SATO
Article type: Article
Session ID: 3-3
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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This study is aimed at the development of a device for the user to grab a virtual object with his bare hands without feeling uncomfortable. Our device does not require any wearable special equipment.
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Toru AOKI, Kousuke WAKABAYASHI, YiHsin HO, Norio TAGAWA, Kan OKUBO
Article type: Article
Session ID: 3-4
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Accurate stereo matching is a difficult problem because of differences of the appearance and/or the shading of target objects between two views. To avoid this difficulty, we have proposed a two-view method based on shading and stereo information without explicit stereo matching. This method takes a high computational cost, since it needs iterative updates of many unknown variables including not only the depth but also various shading parameters. In this study, by removing a specular reflection component from the observed image as a preprocessing, we simplify the above method, and hence we aim to lower the computational cost with improving the accuracy of recovery.
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Yusuke KAMEDA, Ichiro MATSUDA, Susumu ITOH
Article type: Article
Session ID: 3-5
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We propose a stable computation scheme for variational scene-flow computation. Scene flow is a velocity field on a stereo image sequence and represents apparent motions and disparity changes. The stability condition of the proposed scheme is independent of images and regularization coefficients in the variational problem.
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Jianfeng XU, Shigeyuki SAKAZAWA
Article type: Article
Session ID: 3-6
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In this work, we define a new term "cooperative segmentation" to describe the issue of simultaneously segmenting multiple motions into a fixed number of segments, which is useful for analyzing the motion difference between neutral motions and affective motions in a segment unit. An effective solution is proposed for the issue that combines the techniques from motion segmentation and motion alignment.
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Tatsuya KOBAYASHI, Haruhisa KATO, Hiromasa YANAGIHARA
Article type: Article
Session ID: 3-7
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We present a novel vision-based pose detection method that can be used in mobile AR services. Conventional methods could not have met all the requirement such as complexity, robustness and memory consumption for mobile AR services because of their trade-off relationship. In this paper, we propose a novel keypoint registration approach to solve the problem. Our method detects features from a small number of essential training images to improve robustness to changes in viewpoint. Experimental results demonstrate that our approach both improves the robustness of the conventional method by about 55% and speeds up runtime processing by about 7%.
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Hiroshi SANKOH, Sei NAITO
Article type: Article
Session ID: 3-8
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In this paper, we propose a dynamic camera calibration and object tracking method for sport videos captured with a moving pan-tilt-zoom camera. Our proposed method estimates camera parameters by identifying corresponding feature points between video frames. Furthermore, the method conducts object tracking based on the position of each object calculated with the estimated camera parameters for every frame. Experimental results show the effectiveness of the proposed method.
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Mayu OKUMURA, Tomoki WATANABE, Akihito SEKI, Ryuzo OKADA
Article type: Article
Session ID: 3-9
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We propose a human detection method that is robust to the difference in installation environment of cameras. Our detector combines an offline detector with an online detector, and reduces the miss detection rate by 48.8%.
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Naoki OZAWA
Article type: Article
Session ID: 4-1
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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A pre-interpolation method by an IDCT, the interval for reproduction of pixel signal being decreased and the frequency coefficients being compensated for the frequency response caused by dividing pixels, is developed. A difference between the represented image signal and the real image signal is less than a half of that generated by the bi-cubic method.
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Toshie MISU, Yasutaka MATSUO, Shunsuke IWAMURA, Kazuhisa IGUCHI, Shini ...
Article type: Article
Session ID: 4-2
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We have developed an FPGA-based 2K/4K real-time super-resolution processor that is capable of spatio-temporally and color-selectively controlling the over-Nyquist components. The processor is composed of adaptive digital filters for sub-band decomposition and wavelet reconstruction. As an application of the processor, we demonstrate ultra high efficient real-time 4K video transmission in combination with a 4K/2K pre-reduction processor and a 2K video codec.
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Kyosuke Okoshi, Masanao Sawada, Tomio Goto, Satoshi Hirano, Masaru Sak ...
Article type: Article
Session ID: 4-3
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We propose a novel blind image restoration method based on the total variation (TV) regularization and the shock filter. Experimental results show that our proposed method improves picture quality, especially dark portions, and the computational time of our method is almost 3 times faster than that of the conventional method.
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Jun OBATA, Takanori SOGA, Takashi KAWASHIMA, Akihiro HABU, Masahiro WA ...
Article type: Article
Session ID: 4-4
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Hirotaka TATSUKAWA, Akiko SEKI
Article type: Article
Session ID: 4-5
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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This paper describe extraction of impression of program genre based on TV-Program reviews. The method has three structure. The first, Extraction of Important words in TV-Program reviews using tf-idf method. To the next, the words group into genre. At the last, compared the words with other words and genres.
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Kenya NAKAI, Masayuki OHMAKI, Nobuo TAKESHITA
Article type: Article
Session ID: 4-6
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Further accurate focus error detection in an optical pickup which is applicable for a large capacity data storage such as Blu-ray Disc^<TM> (BD) was studied. In the focus error detection with a conventional astigmatic aberration method, an unexpected offset of the focus error is occurred due to either an optical alignment shift or a distortion of beam profile on the photo-detector. The reduction effect of the focus offset was confirmed on simulation, introducing an additional calculation term to correct the focus offset in the conventional astigmatic aberration method.
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Mitsunobu OKUDA, Yasuyoshi MIYAMOTO, Eiichi MIYASHITA, Naoto HAYASHI
Article type: Article
Session ID: 4-7
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We have focused on new magnetic memories without mechanical moving parts, utilizing the current-driven magnetic domain wall motion, in order to achieve ultra high data transfer rate. We have fabricated [Co/Pd] magnetic nanowires and clarified the threshold current density to drive multiple magnetic domains by application of narrow one-pulse current.
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Yuki Matsugano, Ryo Furukawa, Satoshi Ono, Hisato Fukuda, Hiroshi Kawa ...
Article type: Article
Session ID: 5-1
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In the estimation of BRDF parameter, a simple local search method may not be able to find an optimal solution. This paper proposes a new optimization method which is a combination of case-based reasoning and selfadaptive differential evolution method. This method can find efficiently high quality reflection parameters.
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Hiroki NAKAMURA, Keita USHIDA
Article type: Article
Session ID: 5-2
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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The aim of this research is to generate sand-animation-like images from existing images. In this paper the authors report a procedure of translation designed through the observation of the performance and experimental results generated with the software.
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Takahiro TAGUCHI, Mikio SHINYA, Michio SHIRAISHI
Article type: Article
Session ID: 5-3
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Realistic human illustration drawing involves a labor-intensive hair painting process to portray hair fineness. This study proposes a hair painting method using a 2.5 D hair model to reduce artists' load in interactive illustration drawing.
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Kaoru SUGITA, Masahiro SEKINE, Masashi NISHIYAMA
Article type: Article
Session ID: 5-4
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We propose a cloth image positioning method for a virtual fitting system. To realize a good fit and smooth tracking of cloth image, this system switches template matching based positioning algorithm and skeleton based tracking algorithm depending on the pose and motion of the user before the system.
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Yusuke TAZOE, Masahiro SEKINE, Kaoru SUGITA, Yojiro TONOUCHI, Masashi ...
Article type: Article
Session ID: 6-1
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We propose a method for simultaneously reading curved-markers on cables. Existing methods cannot read an ID when a marker is curved. We tackle this issue to identify cables for a novel maintenance system. Our method searches local regions of markers and combines the local regions for reading IDs.
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Kensuke IKEYA, Kensuke HISATOMI, Miwa KATAYAMA, Tomoyuki MISHINA, Yuic ...
Article type: Article
Session ID: 6-2
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In this paper, we propose a multi-view image generation system using multi-viewpoint robotic cameras. The proposed system can create a time slice movie of subject in one minute after shooting with multi-viewpoint robotic cameras. In experiments, we applied our system to a scene of basket ball to confirmed effectiveness.
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Daiichiro KATO, Kazutoshi Muto, Hideki Mitsumine, Hiroyuki OKAMOTO, Al ...
Article type: Article
Session ID: 6-3
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We are studying about the hybrid sensor which detects a movement of a camera to composite CG to the real image shot by the camera. This sensor is constructed with MEMS sensor, the image processor, and the height sensor. This time, we developed a new algorithm of the process, and made high precision.
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Kohsei MATSUMOTO, Shuichi MAKI, Ryoso MASAKI, Ichiro TAKAHASHI
Article type: Article
Session ID: 6-4
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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This paper describes map-building and pose estimation component using laser sensor data matching. Features of our component are its robustness based on elimination of dense sensor data appeared to close obstacles, and handleability based on automatic mapping. Additionally, the repeatability of pose estimation achieved in the experiment was 10mm < 3σ.
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Nobuyuki KINOSHITA, Kazutomo UEZONO, Yasuharu INOU, Yoshitaka HAKAMADA ...
Article type: Article
Session ID: 7-1
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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UHDTV (8K) VOD (Video-on-Demand) experiment for cable TV system was successfully achieved by adopting MPEG-2 TS basis channel bonding technology. In response to viewer's request signal, the UHDTV (8K) transmitted by four 256 QAM channels was restored to an original signal at our prototype set-top box through a HFC (Hybrid Fiber and Coaxial) cable TV network.
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Junichiro KAWAMOTO, Tsuyoshi NAKATOGAWA, Kimiyuki OYAMADA
Article type: Article
Session ID: 7-2
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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We developed a frame conversion method from a Super Hi-Vision (SHV) signal to Ethernet signals for transmitting an SHV signal on 100-gigabit Ethernet. The results of experiment showed that our method realized successful conversion.
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Kazuhisa Kuriyama
Article type: Article
Session ID: 7-3
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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This experiment makes it possible to transmit 4K video using FPU for HD video
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Keisuke MIYAMAE, Erina OHGIDA, Kenta KOGURE, Hiroki KOJIMA, Yasuhiro W ...
Article type: Article
Session ID: 7-4
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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Aiming at the live broadcasting from the deep sea, we examined the feasibility of underwater optical transmission of audio-video signal by making fundamental experiment with a large number of blue light-emitting diode.
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Masaaki TAMASAKI
Article type: Article
Session ID: 7-5
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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It has been known that a good broad band antenna could be obtained by twin delta loop antenna. In this paper, the twin delta loop antenna with plane reflector was analyzed. The input impedance and gain were obtained by using the moment method for the analysis. As a result, it is found that the twin delta loop antenna with plane reflector has the gain that 11dBi is high.
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Yuji Matsukubo, Ryo Araki, Kohei Ohno, Makoto Itami
Article type: Article
Session ID: 7-6
Published: August 28, 2013
Released on J-STAGE: May 24, 2017
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In this paper, performance of cooperative reception of ISDB-T One Segment Service is analyzed . As the result of simulation, it was confirmed that reception area of one segment service can be extended by cooperative reception.
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