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ImageTools

  

GetSubImage

  

extract a subimage from an image

 

Calling Sequence

Parameters

Options

Description

Examples

Calling Sequence

GetSubImage( img, row, col, ht, wd, opts )

Parameters

img

-

Image

row

-

integer; initial row of the subimage

col

-

integer; initial column of the subimage

ht

-

posint; height of the subimage

wd

-

posint; width of the subimage

opts

-

(optional) equation(s) of the form option = value; specify options for the GetSubImage command

Options

• 

output = Image

  

Specifies a data structure into which the output is written. This can be used to avoid allocating memory. The size, number of layers, and order must match that of the subimage. The default is NULL.

• 

reindex = truefalse

  

If true, the indices of the returned image are reindexed so that they start at 1. If false, the row and column indices start at row and col, respectively. The default is false.

Description

• 

The GetSubImage command returns a subimage of a given image.

• 

The img parameter is the image.

• 

The row and col parameters specify the coordinates of the upper left pixel of the desired subimage of img.

• 

The ht and wd parameters specify the height and width of the subimage.

Examples

withImageTools:

imgCreate500,500,r,c→r+c2500:

imgsGetSubImageimg,100,100,200,200:

Embedimg,imgs

See Also

ImageTools

ImageTools[GetLayer]

ImageTools[SetSubImage]

ImageTools[View]

 


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