correct quadrant and angle when not using roipoly
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slowlearner
am 2 Jan. 2021
Bearbeitet: slowlearner
am 5 Jan. 2021
Hi I'm trying to make 2 objects in a picture the points of interest however, the problem I'm facing is that I can't get the angle of the point of interest. the simpler solution would be to do it with roipoly but then i wont understand the how...
The picture contains the 2 lego platforms I intend to mark as points of interests but when selecting the right one I get a square with the background table. So in the code I need to account for the angle, I'm trying to make all my codes more general purpouse hens the switch case i know i should implement it in a loop for more objects than two but that comes later at the moment i just need to solve this hurdle.
cam = webcam;
img_piece = snapshot(cam);
figure;imshow(img_piece);
hold on;
roi1 = drawpolygon;
mask1 = createMask(roi1);
draw(roi1);
mask2 = createMask(roi1);
mask = mask1 + mask2;
pause
maskedImg = img_piece;
for i = 1:size(img_piece,1)
for j = 1:size(img_piece,2)
if ~mask(i,j)
maskedImg(i,j,:) = [0 0 0];
end
end
end
figure;imshow(maskedImg);
%% EDIT: the code now contains the correct answer but for multiple uses you need to make it your own
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Image Analyst
am 2 Jan. 2021
Bearbeitet: Image Analyst
am 2 Jan. 2021
You need to use roipolyold() or drawpolygon() instead of all that with ginput(), etc.
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