How to crop image by specific size and location ?
21 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Jenifer NG
el 13 de Mayo de 2022
Comentada: Jenifer NG
el 13 de Mayo de 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 comentarios
Respuesta aceptada
DGM
el 13 de Mayo de 2022
Editada: DGM
el 13 de Mayo de 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
Más respuestas (0)
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!