![Page 1: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/1.jpg)
Grid Pictures Modification
![Page 2: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/2.jpg)
Geometrical Modifications
• Clip– Rectangular– Other shapes
• Rotate– Left, Right– 180 degrees– Flip
![Page 3: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/3.jpg)
warping
![Page 4: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/4.jpg)
warping
![Page 5: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/5.jpg)
![Page 6: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/6.jpg)
Morphing
![Page 7: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/7.jpg)
Resolution modification
• Resolution / number of pixels /dimensions of picture
• Resolution Decreasing (average color of pixels)
• Resolution increasing - copying of pixels - dithering
![Page 8: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/8.jpg)
Color depth decreasing
• Rounding of colors• Establishing of color palette• Half toning• Dithering
![Page 9: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/9.jpg)
Half Toning
• Half tone matrix– example
0 12 3 15
8 4 11 7
2 14 1 13
10 6 9 5
![Page 10: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/10.jpg)
Floyd Steinberg dithering
7/16
3/165/16
1/16
![Page 11: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/11.jpg)
Pixel color correction
• Color correction• Saturation correction• Brightness correction
– Simple brightness correction– Contrast correction– Gamma correction
![Page 12: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/12.jpg)
Saturation
S
![Page 13: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/13.jpg)
Saturation correction
S
![Page 14: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/14.jpg)
Brightness
Light
![Page 15: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/15.jpg)
Brightness histogramm
K W
![Page 16: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/16.jpg)
Color brightness
• Y = 0,299R + 0,587G + 0.114B
![Page 17: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/17.jpg)
Simple brightness correction
Original br
New br
![Page 18: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/18.jpg)
Simple brightness decreasing
Original br
New br
![Page 19: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/19.jpg)
Contrast decreasing
Original br
New br
![Page 20: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/20.jpg)
Contrast increasing
Original br
New br
![Page 21: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/21.jpg)
Gamma correction of brightness
Original br
New br
![Page 22: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/22.jpg)
Gamma function
Tedy
Y = 255 * (x/255)1/γ
Y = x1/γ
• Y = ymin + (ymax-ymin)*(x/xmax)1/γ
![Page 23: Grid Pictures Modification. Geometrical Modifications Clip Rectangular Other shapes Rotate Left, Right 180 degrees Flip](https://reader033.vdocument.in/reader033/viewer/2022052516/5a4d1b8e7f8b9ab0599c0564/html5/thumbnails/23.jpg)
Gamma correctionOriginal
brightness On <0,1> γ=0,5 γ=2,2
0 0 0 0 0 0
10 0,039216 0,001538 0,392157 0,229437 58,50645
20 0,078431 0,006151 1,568627 0,314409 80,17437
60 0,235294 0,055363 14,11765 0,518046 132,1018
128 0,501961 0,251965 64,25098 0,731039 186,4151
200 0,784314 0,615148 156,8627 0,895449 228,3395
255 1 1 255 1 255