ImageTrim
ImageTrim[image,roi]
gives the smallest subimage of image that includes the specified region of interest roi.
ImageTrim[image,roi,r]
adds a margin of size r back to the resulting image.
ImageTrim[image,{roi1,roi2,…},…]
extracts multiple subimages specified by roii from image.
Details and Options


- Image trimming, also known as image cropping, is the process of removing border pixels from an image and is typically used for extracting regions of interest.
- ImageTrim[image,roi] returns a subimage containing the region of interest roi. The region roi can be any of the following:
-
{{x1,y1},…}or {{x1,y1,z1},…} a list of 2D or 3D image positions region a 2D or 3D geometric region (Point, Disk, Sphere, etc.) maskimage nonzero pixels of a 2D or 3D object f a region returned by a function f - ImageTrim assumes the standard image coordinate system.
- For integer coordinate values
the trimmed image will include all pixels touching the point
. Coordinates
lie at the center of pixels. »
- ImageTrim[image,{pt1,…},{rx,ry}] specifies different horizontal and vertical margins.
- The following options can be given:
-
DataRange Full range of pixel positions in image Padding None padding scheme to use - By default, if fewer elements exist than are requested, ImageTrim will just return the elements that are present. By setting the Padding option to anything else, pixels outside the original image can also be included. »
- Possible settings for DataRange include:
-
Automatic {{0,1},{0,h/w}} in 2D, {{0,1},{0,d/w},{0,h/w}} in 3D Full {{0,w},{0,h}} in 2D, {{0,1},{0,d},{0,h}} in 3D (default) {{left,right},{bottom,top}} explicit coordinate ranges in 2D {{left,right},{front,back},{bottom,top}} explicit coordinate ranges in 3D


Examples
open allclose allScope (5)
Region of Interest (2)
Options (2)
DataRange (1)
Applications (7)
Text
Wolfram Research (2010), ImageTrim, Wolfram Language function, https://reference.wolfram.com/language/ref/ImageTrim.html (updated 2018).
BibTeX
BibLaTeX
CMS
Wolfram Language. 2010. "ImageTrim." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2018. https://reference.wolfram.com/language/ref/ImageTrim.html.
APA
Wolfram Language. (2010). ImageTrim. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ImageTrim.html