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检索条件"机构=ATR Intelligent Robotics and Communication Laboratories"

共 233 条记录，以下是1-10 订阅

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Remote Gaze Estimation with a Single Camera Based on Facial-Feature Tracking without Special Calibration Actions 08

Remote Gaze Estimation with a Single Camera Based on Facial-...

引用

Eye Tracking Research and Applications Symposium

作者： Yamazoe, Hirotake Utsumi, Akira Yonezawa, Tomoko Abe, Shinji ATR Intelligent Robotics and Communication Laboratories

ISBN: (纸本)9781595939821

We propose a real-time gaze estimation method based oil facial-feature tracking using single video camera that does not require any special user action for calibration. Many gaze estimation methods have been already proposed;however, most conventional gaze track-in, algorithms can only he applied to experimental environments due to their complex calibration procedures and lacking of usability. In this paper, we propose a gaze estimation method that can apply to daily-life situations. Gaze directions are determined as D vectors connecting both the eyeball bind the iris centers. Since the eyeball center and radius cannot be directly observed from images, the geometrical relationship between the eyeball centers and the facial features and eyeball radius (face/eye model) are calculated in advance. Then, the 2D positions of the eyeball centers can be determined by tracking the facial features. While conventional methods require instructing users to perform such special actions as looking at several reference points in the calibration process, the proposed method does not require such special calibration action of users and call he realized by combining 3D eye-model-based gaze estimation and circle-based algorithms for eye-model calibration. Experimental results show that the gaze estimation accuracy of the proposed method is 5 degrees horizontally and 7 degrees vertically. With our proposed method, various application such as gaze-communication robots, gaze-based interactive signboards, etc. that require gaze information in daily-life situations are possible.

关键词： remote gaze tracking non-intrusive daily-life situations

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EXPLOITING MULTIMODAL DATA FUSION IN ROBUST SPEECH RECOGNITION

EXPLOITING MULTIMODAL DATA FUSION IN ROBUST SPEECH RECOGNITI...

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International Conference on Multimedia and Expo

作者： Heracleous, Panikos Badin, Pierre Bailly, Gerard Hagita, Norihiro ATR Intelligent Robotics and Communication Laboratories Japan

ISBN: (纸本)9781424474936

This article introduces automatic speech recognition based on Electro-Magnetic Articulography (EMA). Movements of the tongue, lips, and jaw are tracked by an EMA device, which are used as features to create Hidden Markov Models (HMM) and recognize speech only from articulation, that is, without any audio information. Also, automatic phoneme recognition experiments are conducted to examine the contribution of the EMA parameters to robust speech recognition. Using feature fusion, multistream HMM fusion, and late fusion methods, noisy audio speech has been integrated with EMA speech and recognition experiments have been conducted. The achieved results show that the integration of the EMA parameters significantly increases an audio speech recognizer's accuracy, in noisy environments.

关键词： articulation audio information automatic phoneme recognition electro-magnetic articulography feature fusion hidden Markov model hidden Markov models late fusion methods multimodal data fusion multistream HMM fusion noisy audio speech robust speech recognition sensor fusion speech recognition

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Effectiveness of cooperative customer navigation from robots around a retail shop

Effectiveness of cooperative customer navigation from robots...

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2011 IEEE International Conference on Privacy, Security, Risk and Trust, PASSAT 2011 and 2011 IEEE International Conference on Social Computing, SocialCom 2011

作者： Kamei, Koji Ikeda, Tetsushi Kidokoro, Hiroyuki Shiomi, Masayuki Utsumi, Akira Shinozawa, Kazuhiko Miyashita, Takahiro Hagita, Norihiro ATR Intelligent Robotics Communication Laboratories Japan

ISBN: (纸本)9780769545783

Applying the technologies of a network robot system, we incorporate the recommendation methods used in Ecommerce in a retail shop in the real world. We constructed a platform for ubiquitous-networked robots that focuses on a shop environment where communication robots perform customer navigation. The platform estimates customer interests from their pre-purchasing behaviors observed by networked sensors without concrete IDs and controls visible-type communication robots in the environment to perform customer navigation. The system can perform collaborative filtering-based recommendations without excessively intruding upon the privacy of customers. Since observations and recommendations in real environments are intrinsically annoying, the robot scenarios are also important for interacting with customers as well as the system. Two types of navigation scenarios are implemented and investigated in experiments using 80 participants. The results indicate that in the cooperative navigation scenario, the participants who interacted with the communication robots located both outside and inside the shop felt friendlier toward the robots and found it easy to understand what they said. © 2011 IEEE.

关键词： Navigation

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Modeling and prediction of pedestrian behavior based on the sub-goal concept

Modeling and prediction of pedestrian behavior based on the ...

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International Conference on robotics Science and Systems, RSS 2012

作者： Ikeda, Tetsushi Chigodo, Yoshihiro Rea, Daniel Zanlungo, Francesco Shiomi, Masahiro Kanda, Takayuki Intelligent Robotics and Communication Laboratories ATR Kyoto Japan

ISBN: (纸本)9780262519687

This study addresses a method to predict pedestrians' long term behavior in order to enable a robot to provide them services. In order to do that we want to be able to predict their final goal and the trajectory they will follow to reach it. We attain this task borrowing from human science studies the concept of sub-goals, defined as points and landmarks of the environment towards which pedestrians walk or where they take directional choices before reaching the final destination. We retrieve the position of these sub-goals from the analysis of a large set of pedestrian trajectories in a shopping mall, and model their global behavior through transition probabilities between sub-goals. The method allows us to predict the future position of pedestrians on the basis of the observation of their trajectory up to the moment.1 Keywords-component;pedestrian models;sub-goal retrieval;behavior anticipation. © 2013 Massachusetts Institute of Technology.

关键词： Trajectories

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Preliminary field trial for teleoperated communication robots

Preliminary field trial for teleoperated communication robot...

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RO-MAN 2006 - The 15th IEEE International Symposium on Robot and Human Interactive communication

作者： Koizumi, Satoshi Kanda, Takayuki Shiomi, Masahiro Ishiguro, Hiroshi Hagita, Norihiro ATR Intelligent Robotics and Communication Laboratories Kyoto Japan ATR Intelligent Robotics and Communication Laboratories Kyoto Japan Osaka University Osaka Japan

ISBN: (纸本)1424405653

This paper introduces a "teleoperated communication robot" whose unique point is that its language component is performed by an operator to avoid the automatic recognition difficulty of spoken language. On the other hand, conceptually, its nonverbal behavior will be autonomously controlled. One important point is to identify whether ordinary people will accept this type of communication robot Therefore, we conducted a preliminary field trial at a shopping center, which revealed positive perspectives as well as technical problems to be solved. © 2006 IEEE.

关键词： Robots

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Extraction of paralinguistic information carried by mono-syllabic interjections in Japanese

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6th International Conference on Speech Prosody 2012, SP 2012

作者： Ishi, Carlos Toshinori Hatano, Hiroaki Hagita, Norihiro Intelligent Robotics and Communication Laboratories ATR Kyoto Japan

ISBN: (纸本)9787560848693

Mono-syllabic interjections are often used to express a reaction in conversational speech. It is known that there is relationship between the speaking style, given by intonation and voice quality-related prosodic features, and the paralinguistic information carried by an interjection. However, it is also known that this relationship is dependent on the interjection type. In the present work, we analyzed the relationship between speaking style and the conveyed paralinguistic information item for several mono-syllabic interjection types in Japanese. Evaluation results show that acoustic parameters related to intonation and voice quality features in conjunction with the identity of the interjection are effective for disambiguating 71% of the paralinguistic information items.

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Proposal of acoustic measures for automatic detection of vocal fry

Proposal of acoustic measures for automatic detection of voc...

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9th European Conference on Speech communication and Technology

作者： Ishi, Carlos Toshinori Ishiguro, Hiroshi Hagita, Norihiro Intelligent Robotics and Communication Laboratories ATR Kyoto Japan

Vocal fry is a voice quality that often appears in relaxed voices indicating low tension, or in pressed voices expressing attitudes/feelings of surprise, admiration and suffering. We propose a set of acoustic measures for automatically detecting vocal fry segments in speech utterances. In order to deal with vocal fry utterances with very low fundamental frequencies, where classic short-term analysis methods become problematic, a glottal pulse synchronized method is proposed. The acoustic measures are based on power, periodicity and similarity properties of vocal fry signals. The basic idea is to scan for power peaks in a "very short-term" power contour, check for periodicity properties and evaluate a similarity measure between power peaks for deciding the possibility of vocal fry pulses. Sub-harmonic properties are also taken into account in the periodicity analysis. Evaluation of the proposed measures in automatic detection resulted in 73.3 % correct detection, with an insertion error rate of 3.9 %.

关键词： Speech recognition

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The roles of breathy/whispery voice qualities in dialogue speech

The roles of breathy/whispery voice qualities in dialogue sp...

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4th International Conference on Speech Prosody 2008, SP 2008

作者： Ishi, Carlos Toshinori Ishiguro, Hiroshi Hagita, Norihiro Intelligent Robotics and Communication Laboratories ATR Kyoto Japan

ISBN: (纸本)9780616220030

Qualitative analyses are conducted in spontaneous dialogue speech of several speakers, to verify the paralinguistic roles of breathy/whispery voice qualities in communication. Analyses show that breathy/whispery voices carry a variety of emotionor attitude-related paralinguistic information. Breathiness often appeared in emphasized words/phrases, having the effect of calling/catching the listener's attention. It also rhythmically appeared in utterances expressing the speaker's excitement. In backchannels, breathiness has the effect of expressing politeness or interest to the listener's talk. When accompanied by a softer voice quality, breathiness is used to call/catch the listener's attention, while expressing gentleness or tenderness. A more whispered and low-powered voice quality appears in confidential talking, embarrassment, or when the speaker is talking to oneself.

关键词： Speech communication

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Using prosodic and voice quality features for paralinguistic information extraction 3

Using prosodic and voice quality features for paralinguistic...

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3rd International Conference on Speech Prosody, SP 2006

作者： Ishi, Carlos Toshinori Ishiguro, Hiroshi Hagita, Norihiro Intelligent Robotics and Communication Laboratories ATR Kyoto Japan

The use of voice quality features in addition to prosodic features is proposed for automatic extraction of paralinguistic information (like speech acts, attitudes and emotions) in dialog speech. Perceptual experiments and acoustic analysis are conducted for monosyllabic utterances spoken in several speaking styles, carrying a variety of paralinguistic information. Acoustic parameters related with prosodic and voice quality features potentially representing the variations in speaking styles are evaluated. Experimental results indicate that prosodic features are effective for identifying some groups of speech acts with specific functions, while voice quality features are useful for identifying utterances with an emotional or attitudinal expressivity. © 2006 Proceedings of the International Conference on Speech Prosody.

关键词： Quality control

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Analysis of prosodic and linguistic cues of phrase finals for turn-taking and dialog acts

Analysis of prosodic and linguistic cues of phrase finals fo...

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INTERSPEECH 2006 and 9th International Conference on Spoken Language Processing, INTERSPEECH 2006 - ICSLP

作者： Ishi, Carlos Toshinori Ishiguro, Hiroshi Hagita, Norihiro Intelligent Robotics and Communication Laboratories ATR Kyoto Japan

ISBN: (纸本)9781604234497

This paper presents an analysis on the functions carried by phrase final tones in turn-taking and dialog acts, taking into account linguistic information about the part of speech (particles and auxiliary verbs) attributed to the morphemes at phrase finals. Natural conversational speech data are segmented in inter-pause units, and each utterance unit is arranged according to the phrase final morphemes. Turn-taking functions are annotated, and tones of each phrase final are described by acoustic-prosodic features. Analysis results show a relationship between tones and turn-taking functions in most of the morphemes, while no clear relationship is found in some classes of morphemes which are final particles.

关键词： Dialog acts Morphemes Phrase final tones Turn-taking

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