[kinect] kinect in matlab - Hand Tracking

clc; clear all; close all;
imaqreset; 

depthVid = videoinput('kinect',2);

triggerconfig(depthVid, 'manual');
depthVid.FramesPerTrigger = 1;
depthVid.TriggerRepeat = inf;
set(getselectedsource(depthVid), 'TrackingMode', 'Skeleton');

viewer = vision.DeployableVideoPlayer();

start(depthVid);
himg = figure;

while ishandle(himg)
    trigger(depthVid);
    [depthMap, ~, depthMetaData] = getdata(depthVid);
    idx = find(depthMetaData.IsSkeletonTracked);
    imshow(depthMap, [0 4096]);

    if idx ~= 0
        rightHand = depthMetaData.JointDepthIndices(12,:,idx);
        rightHandWorldCoordinate = depthMetaData.JointWorldCoordinates(12,:,idx);
        zCoord = 1e3*min(depthMetaData.JointWorldCoordinates(12,:,idx));
        radius = round(90 - zCoord / 50);
        rightHandBox = [rightHand-0.5*radius 1.2*radius 1.2*radius];
        
        rectangle('position', rightHandBox, 'EdgeColor', [1 1 0])
    end
end
 

stop(depthVid);

역시 matlab 강좌에서 뽑아온 코드. 실행하면 오른쪽 손을 기준으로 노란색 네모가 따라다닌다. 

동작영상은 다음과 같다.