How to save the output Video using Videowriter.
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I am tracking an object by mouse selection and want to save the video with tracking results. Here is my code.
videoReader = vision.VideoFileReader('1.mp4');
videoFrame = step(videoReader);
figure; imshow(videoFrame); title('Select the Object');
rect = getrect;
bboxPoints = bbox2points(rect(1, :));
pointTracker = vision.PointTracker('MaxBidirectionalError', 2);
points = bboxPoints;
initialize(pointTracker, points, videoFrame);
videoPlayer = vision.VideoPlayer('Position',...
[100 100 [size(videoFrame, 2), size(videoFrame, 1)]+30]);
oldPoints = points;
while ~isDone(videoReader)
videoFrame = step(videoReader);
[points, isFound] = step(pointTracker, videoFrame);
visiblePoints = points(isFound, :);
oldInliers = oldPoints(isFound, :);
if size(visiblePoints, 1) >= 1 % need at least 2 points
[xform, oldInliers, visiblePoints] = estimateGeometricTransform(...
oldInliers, visiblePoints, 'similarity', 'MaxDistance', 4);
bboxPolygon = reshape(bboxPoints', 1, []);
videoFrame = insertShape(videoFrame, 'Polygon', bboxPolygon, ...
'LineWidth', 2);
videoFrame = insertMarker(videoFrame, visiblePoints, '+', ...
'Color', 'white');
oldPoints = visiblePoints;
setPoints(pointTracker, oldPoints);
end
% Display the annotated video frame using the video player object
step(videoPlayer, videoFrame);
% stop(reader);
end
release(videoFileReader);
release(videoPlayer);
release(pointTracker);
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답변 (1개)
Sharmila Raghu
2017년 4월 4일
To save the video with tracking results, you can use the "writeVideo" command. The following is the documentation link for the same:
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