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Author: Arunachalam Somasundaram Publisher: ISBN: Category : Computer animation Languages : en Pages : 139
Book Description
Abstract: Expressive facial speech animation is a challenging topic of great interest to the computer graphics community. Adding emotions to audio-visual speech animation is very important for realistic facial animation. The complexity of neutral visual speech synthesis is mainly attributed to co-articulation. Co-articulation is the phenomenon due to which the facial pose of the current segment of speech is affected by the neighboring segments of speech. The inclusion of emotions and fluency effects in speech adds to that complexity because of the corresponding shape and timing modifications brought about in speech. Speech is often accompanied by supportive visual prosodic elements such as motion of the head, eyes, and eyebrow, which improve the intelligibility of speech, and they need to be synthesized. In this dissertation, we present a technique to modify input neutral audio and synthesize visual speech incorporating effects of emotion and fluency. Visemes, which are visual counterpart of phonemes, are used to animate speech. We motion capture 3-D facial motion and extract facial muscle positions of expressive visemes. Our expressive visemes capture the pose of the entire face. The expressive visemes are blended using a novel constraint-based co-articulation technique that can easily accommodate the effects of emotion. We also present a visual prosody model for emotional speech, based on motion capture data, that exhibits non-verbal behaviors such as eyebrow motion and overall head motion.
Author: Arunachalam Somasundaram Publisher: ISBN: Category : Computer animation Languages : en Pages : 139
Book Description
Abstract: Expressive facial speech animation is a challenging topic of great interest to the computer graphics community. Adding emotions to audio-visual speech animation is very important for realistic facial animation. The complexity of neutral visual speech synthesis is mainly attributed to co-articulation. Co-articulation is the phenomenon due to which the facial pose of the current segment of speech is affected by the neighboring segments of speech. The inclusion of emotions and fluency effects in speech adds to that complexity because of the corresponding shape and timing modifications brought about in speech. Speech is often accompanied by supportive visual prosodic elements such as motion of the head, eyes, and eyebrow, which improve the intelligibility of speech, and they need to be synthesized. In this dissertation, we present a technique to modify input neutral audio and synthesize visual speech incorporating effects of emotion and fluency. Visemes, which are visual counterpart of phonemes, are used to animate speech. We motion capture 3-D facial motion and extract facial muscle positions of expressive visemes. Our expressive visemes capture the pose of the entire face. The expressive visemes are blended using a novel constraint-based co-articulation technique that can easily accommodate the effects of emotion. We also present a visual prosody model for emotional speech, based on motion capture data, that exhibits non-verbal behaviors such as eyebrow motion and overall head motion.
Author: Zhigang Deng Publisher: Springer Science & Business Media ISBN: 1846289068 Category : Computers Languages : en Pages : 303
Book Description
Data-Driven 3D Facial Animation systematically describes the important techniques developed over the last ten years or so. Comprehensive in scope, the book provides an up-to-date reference source for those working in the facial animation field.
Author: Rick Parent Publisher: Morgan Kaufmann ISBN: 0123785642 Category : Computers Languages : en Pages : 591
Book Description
A compilation of key chapters from the top MK computer animation books available today - in the areas of motion capture, facial features, solid spaces, fluids, gases, biology, point-based graphics, and Maya. The chapters provide CG Animators with an excellent sampling of essential techniques that every 3D artist needs to create stunning and versatile images. Animators will be able to master myriad modeling, rendering, and texturing procedures with advice from MK's best and brightest authors. Divided into five parts (Introduction to Computer Animation and Technical Background, Motion Capture Techniques, Animating Substances, Alternate Methods, and Animating with MEL for MAYA), each one focusing on specific substances, tools, topics, and languages, this is a MUST-HAVE book for artists interested in proficiency with the top technology available today! Whether you're a programmer developing new animation functionality or an animator trying to get the most out of your current animation software, Computer Animation Complete: will help you work more efficiently and achieve better results. For programmers, this book provides a solid theoretical orientation and extensive practical instruction information you can put to work in any development or customization project. For animators, it provides crystal-clear guidance on determining which of your concepts can be realized using commercially available products, which demand custom programming, and what development strategies are likely to bring you the greatest success. Expert instruction from a variety of pace-setting computer graphics researchers. Provides in-depth coverage of established and emerging animation algorithms. For readers who lack a strong scientific background, introduces the necessary concepts from mathematics, biology, and physics. A variety of individual languages and substances are addressed, but addressed separately - enhancing your grasp of the field as a whole while providing you with the ability to identify and implement solutions by category.
Author: Catherine Pelachaud Publisher: Springer ISBN: 3540749977 Category : Computers Languages : en Pages : 439
Book Description
This book constitutes the refereed proceedings of the 7th International Workshop on Intelligent Virtual Agents, IVA 2007, held in Paris, France, September 2007. The 19 revised full papers and 12 revised short papers presented together with five invited talks and the abstracts of 32 poster papers are organized in topical sections on rendering and analysis, culture and identity, behavior models, feedback models, dialogues, applications, evaluation, gaze models and emotions.
Author: Gérard Bailly Publisher: Cambridge University Press ISBN: 1107006821 Category : Computers Languages : en Pages : 507
Book Description
This book presents a complete overview of all aspects of audiovisual speech including perception, production, brain processing and technology.
Author: Marco Enrique Zavala Chmelicka Publisher: ISBN: Category : Languages : en Pages :
Book Description
Facial animations capable of articulating accurate movements in synchrony with a speech track have become a subject of much research during the past decade. Most of these efforts have focused on articulation of lip and tongue movements, since these are the primary sources of information in speech reading. However, a wealth of paralinguistic information is implicitly conveyed through visual prosody (e.g., head and eyebrow movements). In contrast with lip/tongue movements, however, for which the articulation rules are fairly well known (i.e., viseme-phoneme mappings, coarticulation), little is known about the generation of visual prosody. The objective of this thesis is to explore the perceptual contributions of visual prosody in speech-driven facial avatars. Our main hypothesis is that visual prosody driven by acoustics of the speech signal, as opposed to random or no visual prosody, results in more realistic, coherent and convincing facial animations. To test this hypothesis, we have developed an audio-visual system capable of capturing synchronized speech and facial motion from a speaker using infrared illumination and retro-reflective markers. In order to elicit natural visual prosody, a story-telling experiment was designed in which the actors were shown a short cartoon video, and subsequently asked to narrate the episode. From this audio-visual data, four different facial animations were generated, articulating no visual prosody, Perlin-noise, speech-driven movements, and ground truth movements. Speech-driven movements were driven by acoustic features of the speech signal (e.g., fundamental frequency and energy) using rule-based heuristics and autoregressive models. A pair-wise perceptual evaluation shows that subjects can clearly discriminate among the four visual prosody animations. It also shows that speech-driven movements and Perlin-noise, in that order, approach the performance of veridical motion. The results are quite promising and suggest that speech-driven motion could outperform Perlin-noise if more powerful motion prediction models are used. In addition, our results also show that exaggeration can bias the viewer to perceive a computer generated character to be more realistic motion-wise.
Author: Laurent Amsaleg Publisher: Springer ISBN: 3319518119 Category : Computers Languages : en Pages : 759
Book Description
The two-volume set LNCS 10132 and 10133 constitutes the thoroughly refereed proceedings of the 23rd International Conference on Multimedia Modeling, MMM 2017, held in Reykjavik, Iceland, in January 2017. Of the 149 full papers submitted, 36 were selected for oral presentation and 33 for poster presentation; of the 34 special session papers submitted, 24 were selected for oral presentation and 2 for poster presentation; in addition, 5 demonstrations were accepted from 8 submissions, and all 7 submissions to VBS 2017. All papers presented were carefully reviewed and selected from 198 submissions. MMM is a leading international conference for researchers and industry practitioners for sharing new ideas, original research results and practical development experiences from all MMM related areas, broadly falling into three categories: multimedia content analysis; multimedia signal processing and communications; and multimedia applications and services.
Author: Rick Parent Publisher: Newnes ISBN: 0124158420 Category : Computers Languages : en Pages : 542
Book Description
Updated to include the most current techniques of computer animation, along with the theory and high-level computation that makes this book the best technically oriented animation resource.
Author: Toyoaki Nishida Publisher: Springer Science & Business Media ISBN: 3642126049 Category : Technology & Engineering Languages : en Pages : 233
Book Description
Emotion connects the thought to the body, which is a magnificent biological - vice for sensing and affecting the world. The thought controls the body through emotions. The body affects the thought through emotions. Through this mec- nism, the thought allows the agent to behave intelligently in the complex world filled with a huge amount of dynamic information. The emotion maps a flux of information into a space which the agent is familiar with, enabling her/him to associate ongoing events with past experiences which help to reduce complexity by providing with a nominal solution. Recent findings in brain science suggest that mirror neurons map visual signals into motor signals for the body. This mechanism might permit one to experience the emotion of the other agent just by feeling the motor signals caused by mirror neurons as a result of visual stimuli caused by the other agent’s emotional beh- iors. In particular, it might play a significant role in invoking empathy in a social situation. It may not be hard to think about what might happen to emotion-less machines. The emotion-less machines may not be able to accumulate experiences to avoid serious failures. They may not be able to communicate with the humans in an empathetic way.
Author: Arunachalam Somasundaram
Author: Arunachalam Somasundaram
Author: Zhigang Deng
Author: Rick Parent
Author: Catherine Pelachaud
Author: Zhilin Wu
Author: Gérard Bailly
Author: Marco Enrique Zavala Chmelicka
Author: Laurent Amsaleg
Author: Rick Parent
Author: Toyoaki Nishida