How to crop image by specific size and location ?
21 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Jenifer NG
am 13 Mai 2022
Kommentiert: Jenifer NG
am 13 Mai 2022
Dear Matlab experts,
I want to crop an image by specific size (64x64) and location. but the result is not correct
Could anyone help me ?
My step is:
- Detect the centroid of image
- Cropimage
I=imread('2_mask.png')
I2 = imcrop(I,[739.72-32 406.02+32 739.72+32 406.02-32]);
The problem is: the cropped image (I2) is 375x393 [pixel] not 64x64 [Pixel]. The area is bigger than what i expext
This is Cropped image I2 but the size is 375x393 [pixel]
Thanks
Han
0 Kommentare
Akzeptierte Antwort
DGM
am 13 Mai 2022
Bearbeitet: DGM
am 13 Mai 2022
The rect parameter given to imcrop is [xoffset yoffset xwidth ywidth]
I = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/996600/2_mask.png');
I2 = imcrop(I,[739.72-32 406.02-32 64 64]);
imshow(I2)
... although you may find out that you have to subtract 1px from the widths if you actually want a specific output size. This behavior is explained in the help for imcrop().
I2 = imcrop(I,[739.72-32 406.02-32 63 63]); % this will be 64x64 instead of 65x65
Weitere Antworten (0)
Siehe auch
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!