ImageTake

ImageTake[image,n] gives an image consisting of the first n rows of image.

ImageTake[image,-n] gives an image consisting of the last n rows of image.

ImageTake[image,{row1,row2}] gives rows row1 through row2.

ImageTake[image,{row1,row2},{col1,col2}] gives the image that spans row1 to row2 and col1 to col2.

ImageTake[video,…] returns a video in which every frame consists of the specified region of interest.

ImageTake[image3d,{slice1,slice2},{row1,row2},{col1,col2}] gives the 3D image consisting of the specified slices, rows, and columns.

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