3D point cloud

output_dir = 'C:\Users\HITESH\Desktop\Matlab';

objects = imaqfind;
%%set up webcam
leftCam = imaq.VideoDevice('winvideo', 2, 'YUY2_640x480');
rightCam = imaq.VideoDevice('winvideo', 1, 'YUY2_640x480');

%%load stereo parameters if required
if ~exist('stereoParams', 'var')
    load stereocalibration
end

ax = axes;
maxDepth = 5;

while true
imageLeft = step(rightCam);
imageRight = step(leftCam);

[J1, J2] = rectifyStereoImages(imageLeft, imageRight, stereoParams);

disp = disparity(rgb2gray(J1), rgb2gray(J2), 'DisparityRange', [0, 112]);

pointCloud = reconstructScene(disp, stereoParams) ./1000;


z = pointCloud(:,:,3);
z(z<0) = NaN;
z(z>maxDepth) = NaN;
pointCloud(:,:,3) = z;

if ~ishandle(ax)
    break;
else
    pcshow(pointCloud, J1, 'VerticalAxis', 'Y', 'VerticalAxisDir', 'Down', 'Parent', ax);
    
    xlabel('X (m)');
    ylabel('Y (m)');
    zlable('Z (m)');
    xlim(ax, [-.8, .8]);
    ylim(ax, [-.8, .8]);
    zlim([ax, maxDepth]);
    drawnow;
end
end

release(leftCam);
release(rightCam);

Trying to create 3d point cloud from live feed using two calibrated usb camera, but the following error occurs:

Error using load

Unable to read file 'stereocalibration'. No such file or directory.

matlab R2015a

[Walter Roberson]

run stereoCameraCalibrator . save from the menu . Assign stereoParameters to stereoParams . Save that into stereocalibration.mat

[KALYAN ACHARJYA]

Read the error, what does it say

Unable to read file 'stereocalibration'. No such file or directory.

Ensure that, the file stereocalibration is avaliable in current working directory.