Home > freetb4matlab > image > imresize.m

imresize

PURPOSE ^

% Scales the image @var{A} by a factor @var{m} using nearest neighbour

SYNOPSIS ^

function ret = imresize(im, m, interp = 'nearest', filter = 11)

DESCRIPTION ^

% -*- texinfo -*-
% @deftypefn {Function File} @var{B}= imresize (@var{A}, @var{m})
% Scales the image @var{A} by a factor @var{m} using nearest neighbour
% interpolation. If @var{m} is less than 1 the image size will be reduced,
% and if @var{m} is greater than 1 the image will be enlarged. If the image
% is being enlarged the it will be convolved with a 11x11 Gaussian FIR filter
% to reduce aliasing. See below on how to alter this behavior.
%
% @deftypefnx {Function File} @var{B}= imresize (@var{A}, @var{m}, @var{interp})
% Same as above except @var{interp} interpolation is performed instead of
% using nearest neighbour. @var{interp} can be any interpolation method supported by interp2.
%
% @deftypefnx {Function File} @var{B}= imresize (@var{A}, [@var{mrow} @var{mcol}])
% Scales the image @var{A} to be of size @var{mrow}x@var{mcol} using nearest
% neighbour interpolation. If the image is being enlarged it will be convolved
% with a lowpass FIR filter as described above.
%
% @deftypefnx {Function File} @var{B}= imresize (@var{A}, [@var{mrow} @var{mcol}], @var{interp})
% Same as above except @var{interp} interpolation is performed instead of using
% nearest neighbour. @var{interp} can be any interpolation method supported by interp2.
%
% @deftypefnx {Function File} @var{B}= imresize (..., @var{interp}, @var{fsize})
% If the image the image is being reduced it will usually be convolved with
% a 11x11 Gaussian FIR filter. By setting @var{fsize} to 0 this will be turned
% off, and if @var{fsize} > 0 the image will be convolved with a @var{fsize}
% by @var{fsize} Gaussian FIR filter.
%
% @deftypefnx {Function File} @var{B}= imresize (..., @var{interp}, @var{filter})
% If the image size is being reduced and the @var{filter} argument is passed to
% imresize the image will be convolved with @var{filter} before the resizing
% takes place.
%
% @seealso{imremap, imrotate, interp2}
% @end deftypefn

CROSS-REFERENCE INFORMATION ^

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