Survey
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Download The MIT Artificial Intelligence Lab
Document related concepts
Artificial intelligence in video games wikipedia , lookup
Human–computer interaction wikipedia , lookup
Embodied cognitive science wikipedia , lookup
Technological singularity wikipedia , lookup
Visual servoing wikipedia , lookup
Philosophy of artificial intelligence wikipedia , lookup
Intelligence explosion wikipedia , lookup
Ethics of artificial intelligence wikipedia , lookup
History of artificial intelligence wikipedia , lookup
Existential risk from artificial general intelligence wikipedia , lookup
Transcript
Intelligent Perceptual Interfaces Trevor Darrell Eric Grimson MIT Artificial Intelligence Laboratory — Research Directions Perceptual User Interfaces • • • • Interactivity- be aware of viewer! People have natural interface modes Watch, listen, learn signals from user Key concepts: – Transparency - embedded interfaces – Expressiveness - balance interface I/O bandwidth • Key technologies: – Computer Vision – Machine Learning – Spoken Language Understanding MIT Artificial Intelligence Laboratory — Research Directions A Face Responsive Display • Faces are natural interfaces! – Ubiquitous, fast, expressive, general. – Want machines to generate and perceive faces. • A Face Responsive Display... – – – – – Knows when it’s being observed Recognizes returning observers Tracks head pose Recognizes speech without attached microphone Robust to changing lighting, moving backgrounds… MIT Artificial Intelligence Laboratory — Research Directions Head Pose Estimation • Estimate gaze angle of user’s head • Rigid body model: 6 DOF QuickTime™ and a decompressor are needed to see this picture. QuickTime™ and a decompressor are needed to see this picture. QuickTime™ and a decompressor are needed to see this picture. MIT Artificial Intelligence Laboratory — Research Directions Fast and Efficient to Solve! QuickTime™ and a decompressor are needed to see this picture. MIT Artificial Intelligence Laboratory — Research Directions Lip Contour Tracking Conventional Intelligent shape tracking MIT Artificial Intelligence Laboratory — Research Directions Lip Contour Tracking - Video QuickTime™ and a Cinepak decompressor are needed to see this picture. MIT Artificial Intelligence Laboratory — Research Directions Untethered Audio-Visual Interface • Current audio interfaces often require attached microphone — future systems need wireless interface • Common approaches – Beam-forming microphone – Active narrow-field microphone • New idea — exploit joint statistics of audio and visual information • Correlation / mutual information between audio and image pixels can separate sources MIT Artificial Intelligence Laboratory — Research Directions Audio-based Image Localization Can we locate visual sources given audio information? Original Sequence MIT Artificial Intelligence Laboratory — Research Directions Audio-based Image Localization Image variance (ignoring audio) will find all motion in the sequence: Image Variance MIT Artificial Intelligence Laboratory — Research Directions Audio-based Image Localization Examine Mutual Information (Correlation in simplest case) between image and audio: Pixels with high mutual information with audio track MIT Artificial Intelligence Laboratory — Research Directions Learning an Informative Subspace Learned Subspace video projection audio projection Find a projection of both the video data and the audio data to a lowdimensional space so that MI is maximized. MIT Artificial Intelligence Laboratory — Research Directions
