Image Processing Techniques Showcase
Dive into a visual journey exploring various image processing techniques, including image center cropping, rotation, contrast stretching, and more. Witness the transformation of images through these methods and enhance your understanding of digital image manipulation.
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Presentation Transcript
Kp mentse a memriba imwrite fggvny I = imread( Lena.bmp ); Icentar = I(91:190, 91:190); imwrite(Icentar, LenaFace.bmp ) imwrite(Icentar, LenaFace.jpg ) 91:190, 91:190 dim. 100x100 Ibmp = imread( LenaFace.bmp ); Ijpg = imread( LenaFace.jpg ); Lena.bmp
Kp mentse a memriba imwrite fggvny subplot(1,2,1), imshow(Ibmp, [0 255]), title( bmp ) subplot(1,2,2), imshow(Ijpg, [0 255]), title( jpg ) 1:10, 1:10 1:10, 1:10
Kp rotcija imrotate fggvny I=imread('lena.bmp'); I45=imrotate(I,45); I45crop=imrotate(I,45,'crop'); subplot(1,3,1), imshow(I), title('Original 256x256') subplot(1,3,2), imshow(I45), title('Rotated 45 degrees, 363x363') subplot(1,3,3), imshow(I45crop), title('Rotated 45 degrees, 256x256, cropped')
Kp rotcija imrotate fggvny 10863x10863 pikszel
Contrast streching A=uint8(round(180*rand(10)))+20 min(min(A)) = 23 max(max(A)) = 198
Contrast streching min(min(A)) = 23 max(max(A)) = 198
Contrast streching min(min) = 74 max(max) = 224 Kontrast = 150
Indexed images Image matrix + colormap A = myColorMap = 10 10 uint8 matrix 0 0 0 1 0 0 0 1 0 0 0 1 1 1 0 1 0 1 0 1 1 1 1 1 1 2 7 1 4 8 3 2 2 0 7 2 5 6 7 8 8 3 5 2 3 4 3 5 7 6 1 7 1 1 8 7 2 6 7 6 3 5 1 6 5 5 7 2 7 5 6 3 4 8 3 1 6 2 3 0 4 3 8 6 1 4 2 1 1 3 5 2 4 1 6 7 2 4 8 5 4 6 2 7 7 7 1 4 8 7 7 0 1 8 5 5 3 2 2 2 3 1 2 3
Indexed images Image matrix + colormap A = copper(8) 10 10 uint8 matrix 0 0 0 0.1786 0.1116 0.0711 0.3571 0.2232 0.1421 0.5357 0.3348 0.2132 0.7143 0.4464 0.2843 0.8929 0.5580 0.3554 1.0000 0.6696 0.4264 1.0000 0.7812 0.4975 1 2 7 1 4 8 3 2 2 0 7 2 5 6 7 8 8 3 5 2 3 4 3 5 7 6 1 7 1 1 8 7 2 6 7 6 3 5 1 6 5 5 7 2 7 5 6 3 4 8 3 1 6 2 3 0 4 3 8 6 1 4 2 1 1 3 5 2 4 1 6 7 2 4 8 5 4 6 2 7 7 7 1 4 8 7 7 0 1 8 5 5 3 2 2 2 3 1 2 3 copper(256)
Indexed images I=imread('lena.bmp'); subplot(1,3,1), imshow(I, hot(256)), colorbar subplot(1,3,2), imshow(I, cool(256)), colorbar subplot(1,3,3), imshow(I/16, parula(16)), colorbar
Indexed images I=imread('lena.bmp'); imshow(I/32,copper(8)), title('copper, 8 shades') copper(8) 0 0 0 0.1786 0.1116 0.0711 0.3571 0.2232 0.1421 0.5357 0.3348 0.2132 0.7143 0.4464 0.2843 0.8929 0.5580 0.3554 1.0000 0.6696 0.4264 1.0000 0.7812 0.4975 I=imread('lena.bmp'); imshow(I/64,copper(4)), title('copper, 4 shades') copper(4) 0 0 0 0.4167 0.2604 0.1658 0.8333 0.5208 0.3317 1.0000 0.7812 0.4975
