Zoom an image to a given size.

zoom_image_size scales the image Image to the size given by Width and Height. The parameter Interpolation determines the type of interpolation used (see affine_trans_image).

If the system parameter 'int_zooming' is set to 'true', the internally used integer arithmetic may lead to errors in the following two cases: First, if zoom_image_size is used on an uint2 or int2 image with high dynamics (i.e. images containing values close to the respective limits) in combination with scale factors (ratio of output to input image size) smaller than 0.5, then the gray values of the output image may be erroneous. Second, if Interpolation is set to a value other than 'none', a large scale factor is applied, and a large output image is obtained, then undefined gray values at the lower and at the right image border may result. The maximum width B_max of this border of undefined gray values can be estimated as B_max = 0.5 * S * I / 2^15, where S is the scale factor in one dimension and I is the size of the output image in the corresponding dimension. In both cases, it is recommended to set 'int_zooming' to 'false' via the operator set_system.

read_image(Image,'affe') 
disp_image(Image,WindowHandle) 
zoom_image_size(Image,ZooImage,0,200,200).
disp_image(ZooImage,WindowHandle) 

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

zoom_image_factor, affine_trans_image, hom_mat2d_scale

hom_mat2d_scale, affine_trans_image

Foundation