i wrote this code to detect the face in each no.of frames in given video file but it throws this error Error using ShapeInserter/step The Pts input data type must be integer. how to solve this error pls suggest me the answer for this problem

faceDetector = vision.CascadeObjectDetector(); filename = 'D:\matlab\srini project\3.avi'; mov = VideoReader(filename);

% Output folder

outputFolder = fullfile(cd, 'srini'); if ~exist(outputFolder, 'dir') mkdir(outputFolder); end

%getting no of frames

numberOfFrames = mov.NumberOfFrames; numberOfFramesWritten = 0; for frame = 1 : numberOfFrames-1

thisFrame = read(mov, frame); outputBaseFileName = sprintf('%3.3d.jpg', frame); outputFullFileName = fullfile(outputFolder, outputBaseFileName); imwrite(thisFrame, outputFullFileName, 'jpg'); progressIndication = sprintf('Wrote frame %4d of %d.', frame,numberOfFrames);

bbox = step(faceDetector, thisFrame);

% Convert the first box to a polygon. % This is needed to be able to visualize the rotation of the object. x = bbox(1, 1); y = bbox(1, 2); w = bbox(1, 3); h = bbox(1, 4); bboxPolygon = [x, y, x+w, y, x+w, y+h, x, y+h];

% Draw the returned bounding box around the detected face. shapeInserter = vision.ShapeInserter('Shape', 'Polygons','BorderColor','Custom','CustomBorderColor',[255 255 0]); thisFrame = step(shapeInserter, thisFrame, bboxPolygon);

figure; imshow(thisFrame); title('Detected face'); disp(progressIndication); %disp(detected);

numberOfFramesWritten = numberOfFramesWritten + 1; end progressIndication = sprintf('Wrote %d frames to folder "%s"',numberOfFramesWritten, outputFolder); disp(progressIndication);

i wrote this code to detect the face in each no.of frames in given video file but it throws this error

Error using ShapeInserter/step The Pts input data type must be integer.

how to solve this error pls suggest me the answer to detect the face in each frames in a given video..

[Dhananjay]

for every instance of bbox, except the first one where it was defined, write int32(bbox) and check. It should work.