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q6.txt
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q6.txt
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Q - 6
geometric transformation of image
a) – translation
img = imread("bird.png")
subplot(2,2,1)
title("original")
imshow(img)
//translation matrix
// 1 0 0
// 0 1 0
// 70 100 1
mat = [1 0 0; 0 1 0; 70 70 1]
tr = imtransform(img,mat, 'affine')
subplot(2,2,2)
title("translation")
imshow(tr)
//-------------------------------------------------------------------
B) - scaling
//scaling matrix
// 2 0 0
// 0 4 0
// 0 0 1
mat1 =[2 0 0;0 4 0; 0 0 1]
scaled = imtransform(img,mat1, 'affine')
title("scaled")
subplot(2,2,3)
imshow(scaled)
//---------------------------------------------------------------------
C) - rotation
// rotation matrix
// cos(120) , -sin(120), 0
// sin(120) , cos(120), 0
// 0 , 0 , 1
mat2 = [cos(120) -sin(120) 0 ;sin(120) cos(120) 0 ;0 0 1 ]
rotated = imtransform(img,mat2, 'affine')
title("rotated")
subplot(2,2,4)
imshow(rotated)