著者
石橋 賢 Luz Toni Da Eynard Remy 北 直樹 姜 南 瀬木 宏 寺田 圭介 藤田 恭平 宮田 一乘
出版者
映像情報メディア学会
雑誌
映像情報メディア学会誌 (ISSN:13426907)
巻号頁・発行日
vol.66, no.1, pp.J11-J16, 2012
被引用文献数
1

In our entertainment VR application, the user can move freely through a virtual city by using a web like SpidermanTM. In this application, the user wears a web shooter, which is a device to shoot webs, and takes aim at a target building. Then, when the user swings his/her arm ahead, a web is launched and it sticks to the target building on the screen. After the web sticks to the building, the user's arm is pulled in the direction of the target building by a pulling force feedback system, which gives the feeling of pulling to the user directly and smoothly, as if he/she were attached to an elastic string. Finally, the user moves to the target building. In three exhibitions, we surveyed the effectiveness of the application by questionnaire. We were able to confirm that a lot of users had enjoyed and were satisfied with our VR application.
著者
Katsuki Kobayashi Takahiro Ogawa Miki Haseyama
出版者
映像情報メディア学会
雑誌
ITE Transactions on Media Technology and Applications (ISSN:21867364)
巻号頁・発行日
vol.1, no.4, pp.333-342, 2013 (Released:2013-10-01)
参考文献数
24
被引用文献数
5

This paper presents a new evaluation criterion for visualization of image search results based on the feature integration theory. This criterion is derived by combining two elements, visual saliency on visualization and grouping degree of similar images. Visual saliency, which is calculated from the feature integration theory, on visualization of image search results enables representation of users' attention, which is closely related to the effectiveness of finding images. Furthermore, since users perceive similar images that are close to each other as one group, grouping degree of similar images enables evaluation of the effectiveness when users find images similar to a desired image. Therefore, by combining visual saliency on visualization and grouping degree of similar images, we can derive the novel criterion and evaluate the effectiveness of visualization of image search results.
著者
Sho Takahashi Miki Haseyama
出版者
映像情報メディア学会
雑誌
ITE Transactions on Media Technology and Applications (ISSN:21867364)
巻号頁・発行日
vol.1, no.3, pp.220-225, 2013 (Released:2013-07-01)
参考文献数
13
被引用文献数
1 2

An Active grid-based method for estimating pass regions from broadcast soccer videos is presented in this paper. It is assumed that the pass region has a high probability of the pass succeeding. In soccer matches, players discover pass regions based on previous and current player positions. In conventional methods, pass regions are estimated by applying Active Net to only a single frame of a soccer video. In the proposed method, Active grid is applied to three-dimensional data by which frames of the soccer video are connected with the temporal dimension. The proposed method then realizes robust estimation of pass regions based on multiple frames of player positions. The proposed method was applied to actual TV programs to verify its effectiveness.
著者
Soh Yoshida Hiroshi Okada Takahiro Ogawa Miki Haseyama
出版者
映像情報メディア学会
雑誌
ITE Transactions on Media Technology and Applications (ISSN:21867364)
巻号頁・発行日
vol.1, no.3, pp.237-243, 2013 (Released:2013-07-01)
参考文献数
19

This paper presents a new method to improve performance of SVM-based classification, which contains a target object detection scheme. The proposed method tries to detect target objects from training images and improve the performance of the image classification by calculating the hyperplane from the detection results. Specifically, the proposed method calculates a Support Vector Machine (SVM) hyperplane, and detects rectangular areas surrounding the target objects based on the distances between their feature vectors and the separating hyperplane in the feature space. Then modification of feature vectors becomes feasible by removing features that exist only in background areas. Furthermore, a new hyperplane is calculated by using the modified feature vectors. Since the removed features are not part of the target object, they are not relevant to the learning process. Therefore, their removal can improve the performance of the image classification. Experimental results obtained by applying the proposed methods to several existing SVM-based classification method show its effectiveness.
著者
Nobuyuki Yagi Norifumi Egami Naoki Shimidzu Miki Haseyama
出版者
映像情報メディア学会
雑誌
ITE Transactions on Media Technology and Applications (ISSN:21867364)
巻号頁・発行日
vol.1, no.1, pp.10-19, 2013 (Released:2013-01-01)
参考文献数
139
被引用文献数
2

This paper presents a survey of research trends in broadcasting technology from production to distribution and from fundamentals to applications. It briefly reviews work being done on UHDTV, 3DTV, IPTV, hybrid broadcasting, transmission technology, audio-visual coding, image sensing devices, display devices, media accessibility, content production, metadata, and content management.
著者
Miki Haseyama Takahiro Ogawa Nobuyuki Yagi
出版者
映像情報メディア学会
雑誌
ITE Transactions on Media Technology and Applications (ISSN:21867364)
巻号頁・発行日
vol.1, no.1, pp.2-9, 2013 (Released:2013-01-01)
参考文献数
82
被引用文献数
4 28

Research trends in new video retrieval based on image and video semantic understanding are presented in this paper. First, recent studies related to image and video semantic analysis are introduced to understand leading-edge multimedia retrieval technologies. Several works related to visualization interfaces for multimedia retrieval are also presented. Finally, trends in state-of-the-art studies and the future outlook are described.
著者
長谷川 誠 田島 慎一
出版者
映像情報メディア学会
雑誌
映像情報メディア学会誌 : 映像情報メディア = The journal of the Institute of Image Information and Television Engineers (ISSN:13426907)
巻号頁・発行日
vol.59, no.5, pp.786-790, 2005-05-01
参考文献数
9
被引用文献数
3

We propose applying of the ridgelet transform to semantic objects segmented using watershed segmentation. The ridgelet transform effectively represents objects with singularities along lines; therefore, it is a powerful tool for coding. Moreover, it can easily rotate blocks in the ridgelet domain. Nevertheless, the targets to be roteted are not rectangular blocks but real objects. For that reason, we divide pictures into semantic objects using watershed segmentation, then convert each object into the ridgelet domain so they can be rotated easily. We experimented in coding and rotating objects.
著者
宮下 芳明 西本 一志
出版者
映像情報メディア学会
雑誌
映像情報メディア学会技術報告 (ISSN:13426893)
巻号頁・発行日
vol.29, no.30, pp.17-20, 2005-05-30

本研究では「楽譜」が単なる情報記録にとどまらない作用を演奏者に及ぼすものであると考え、その効果を高めるひとつの拡張例として「動的な楽譜」を製作し、実際に解釈し演奏してもらうことを試みた。その結果、フレーズの創造という領域まで踏み込み、解釈幅の自由度は増えているものの、分析や解釈の議論においては五線譜とほぼ同様なプロセスがとられた。また実際の演奏からは、静的な楽譜と比較してより強く時間的な制約をかけるメディアであることが観察された。 : In this paper, we developed a moving graphic score as non-static musical score, and verified them practically on stage. As a result of analyzing the process of planning for playing it by performers, we found that they passed almost the same process as staff notation, though the interpretation was more flexible. From that point, we concluded the effectiveness and possibilities for developing such expanded scores to lead musical performers to new musical expressions.