zoom_image_factor

zoom_image_factor ( Image : ImageZoomed : ScaleWidth, ScaleHeight, Interpolation : )

Zoom an image by a given factor.

zoom_image_factor scales the image Image by a factor of ScaleWidth in width and a factor ScaleHeight in height. The parameter Interpolation determines the type of interpolation used (see affine_trans_image).

Parameters

`Image` (input_object)	(multichannel-)image(-array) `->` object : byte / int2 / uint2 / real
Input image.

`ImageZoomed` (output_object)	(multichannel-)image(-array) `->` object : byte / int2 / uint2 / real
Scaled image.

`ScaleWidth` (input_control)	extent.x `->` real
Scale factor for the width of the image.
Default value: 0.5
Suggested values: 0.25, 0.5, 1.5, 2.0
Typical range of values: `0.001 <= ScaleWidth <= 10.0`
Minimum increment: 0.001
Recommended increment: 0.1

`ScaleHeight` (input_control)	extent.y `->` real
Scale factor for the height of the image.
Default value: 0.5
Suggested values: 0.25, 0.5, 1.5, 2.0
Typical range of values: `0.001 <= ScaleHeight <= 10.0`
Minimum increment: 0.001
Recommended increment: 0.1

`Interpolation` (input_control)	string `->` string
Type of interpolation.
Default value: 'constant'
List of values: 'none', 'constant', 'weighted'

Example

read_image(Image,'affe') 
disp_image(Image,WindowHandle) 
zoom_image_factor(Image,ZooImage,0,0.5,0.5).
disp_image(ZooImage,WindowHandle)

Parallelization Information

zoom_image_factor is reentrant and automatically parallelized (on tuple level, channel level).

Alternatives

See also

Module

Image filters