Intro to Gestural Interfaces with the Kinect

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Greg Borenstein @atduskgreg http://gregborenstein.com Intro to the Kinect: Gestural Interfaces Tuesday, April 17, 12

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NYU ITP Resident Making Things See Special Effects About Me http://shop.oreilly.com/product/0636920020684.do Tuesday, April 17, 12

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The Plan • What is the Kinect? • A silly example of a gestural interface • The ingredients: joint position and vector math • What makes a good gestural interface? • A better example of a gestural interface Tuesday, April 17, 12

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https://vimeo.com/31698679 Scan and Print with Makerbot Control an Arduino robot Tuesday, April 17, 12

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github.com/atduskgreg/making-things-see-examples Tuesday, April 17, 12

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IR Projector Tuesday, April 17, 12

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Image courtesy of futurepicture.org Tuesday, April 17, 12

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IR Projector Tuesday, April 17, 12

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IR Projector IR Camera Tuesday, April 17, 12

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IR Projector IR Camera RGB Camera Tuesday, April 17, 12

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Depth Image RGB Image Tuesday, April 17, 12

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Skeleton Data Tuesday, April 17, 12

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$2000 Tuesday, April 17, 12

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$2000 $3000 Tuesday, April 17, 12

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Nov. 4 - Nov. 10 Tuesday, April 17, 12

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openkinect.org Tuesday, April 17, 12

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Processing.org Tuesday, April 17, 12

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Dan Shiffman photo by Jeff Howard NYU ITP Tuesday, April 17, 12

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openni.org Tuesday, April 17, 12

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Simple OpenNI code.google.com/p/simple-openni Tuesday, April 17, 12

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Something Silly Tuesday, April 17, 12

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Something Silly http://www.youtube.com/watch?v=RPbocvQ3Y9s Tuesday, April 17, 12

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How does this work? Deﬁne rules of a Pose Measure relative position of joints Trigger mp3 Tuesday, April 17, 12

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Get Position of Joints kinect.getJointPositionSkeleton() joint1.x > joint2.x etc... Tuesday, April 17, 12

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kinect.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_RIGHT_HAND, rightHand); kinect.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_RIGHT_ELBOW, rightElbow); kinect.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_RIGHT_SHOULDER, rightShoulder); if(rightElbow.y > rightShoulder.y && rightElbow.x > rightShoulder.x) { stroke(255); // <2> } else { stroke(255,0,0); // <3> } Tuesday, April 17, 12

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The Basic Ingredients Tuesday, April 17, 12

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Calibration Tuesday, April 17, 12

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Calibration Tuesday, April 17, 12

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void onNewUser(int userId) { println("start pose detection"); kinect.startPoseDetection("Psi", userId); } void onEndCalibration(int userId, boolean successful) { if (successful) { println(" User calibrated !!!"); kinect.startTrackingSkeleton(userId); } else { println(" Failed to calibrate user !!!"); kinect.startPoseDetection("Psi", userId); } } void onStartPose(String pose, int userId) { println("Started pose for user"); kinect.stopPoseDetection(userId); kinect.requestCalibrationSkeleton(userId, true); } Tuesday, April 17, 12

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void draw() { kinect.update(); PImage depth = kinect.depthImage(); image(depth, 0, 0); // make a vector of ints to store the list of users IntVector userList = new IntVector(); // write the list of detected users // into our vector kinect.getUsers(userList); // if we found any users if (userList.size() > 0) { // get the first user int userId = userList.get(0); // if we're successfully calibrated if ( kinect.isTrackingSkeleton(userId)) { ... Tuesday, April 17, 12

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... // if we're successfully calibrated if ( kinect.isTrackingSkeleton(userId)) { // make a vector to store the left hand PVector rightHand = new PVector(); // put the position of the left hand into that vector kinect.getJointPositionSkeleton(userId, SimpleOpenNI.SKEL_LEFT_HAND, rightHand); ellipse(rightHand.x, rightHand.y, 10, 10); Tuesday, April 17, 12

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Basic Vector Math rightHand.dist(leftHand) This is the source of the simplest interaction Tuesday, April 17, 12

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What makes a good gestural interface? Tuesday, April 17, 12

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Kinect Abnormal Motion Assessment System Involuntary Motion Disorders like Chorea van Sydenham, Tardive Dyskinesia, and Parkinson’s motionassessment.com Tuesday, April 17, 12

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Kinect Abnormal Motion Assessment System Involuntary Motion Disorders like Chorea van Sydenham, Tardive Dyskinesia, and Parkinson’s motionassessment.com Tuesday, April 17, 12

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Kinect Abnormal Motion Assessment System Won the National Health 2.0 Developer Challenge. Maybe improve treatment. motionassessment.com Tuesday, April 17, 12

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What do you want to make? Tuesday, April 17, 12

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http://shop.oreilly.com/product/0636920020684.do https://github.com/atduskgreg/making-things-see-examples Tuesday, April 17, 12

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Greg Borenstein @atduskgreg http://gregborenstein.com Thanks! Tuesday, April 17, 12