trim_image_for_spacing_fixconv.m

function im2 = trim_image_for_spacing_fixconv(im2, ws, spacing)
% % Trim image so that it matches the spacing.
if mod(size(im2,1)-ws+1, spacing)~=0
    n = mod(size(im2,1)-ws+1, spacing);
    im2(1:floor(n/2), : ,:) = [];
    im2(end-ceil(n/2)+1:end, : ,:) = [];
end
if mod(size(im2,2)-ws+1, spacing)~=0
    n = mod(size(im2,2)-ws+1, spacing);
    im2(:, 1:floor(n/2), :) = [];
    im2(:, end-ceil(n/2)+1:end, :) = [];
end
end