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function [annotation, img] = LMimpad(annotation, img, PADSIZE, PADVAL)
% [annotation, img] = LMimpad(annotation, img, PADSIZE, PADVAL)
%
% [annotation, img] = LMimpad(annotation, img, [256 256], 0)
% PADSIZE = nrows x ncols (final image size)
% PADVAL = value for the border
[nrows, ncols, cols]=size(img);
if PADSIZE(1)<nrows | PADSIZE(2)<ncols
error('ERROR: image is larger than target size. Use LMimcrop instead.')
end
Dy = fix((PADSIZE(1)-nrows)/2);
Dx = fix((PADSIZE(2)-ncols)/2);
img = [repmat(PADVAL, [PADSIZE(1) Dx cols]) ...
[repmat(PADVAL, [Dy ncols cols]); img; repmat(PADVAL, [PADSIZE(1)-nrows-Dy ncols cols])] ...
repmat(PADVAL, [PADSIZE(1) PADSIZE(2)-ncols-Dx cols])];
% Change the polygon coordinates
if isfield(annotation, 'object')
Nobjects = length(annotation.object); n=0;
for i = 1:Nobjects
Npoints = length(annotation.object(i).polygon.pt);
for j = 1:Npoints
x=str2num(annotation.object(i).polygon.pt(j).x);
y=str2num(annotation.object(i).polygon.pt(j).y);
x = round(x + Dx);
y = round(y + Dy);
annotation.object(i).polygon.pt(j).x = num2str(x);
annotation.object(i).polygon.pt(j).y = num2str(y);
end
end
end
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