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Image Interpolation (ba_interp2)

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important script information
company name:
Brian
license: Shareware
minimum requirements: MATLAB 7.8 (R2009a)
functional limitations:
Image Interpolation (ba_interp2) description


% Fast nearest, bi-linear and bi-cubic interpolation for image data%% Usage:% ------% Z = ba_interp2(F, X, Y, [method])%% where method is one off nearest, linear, or cubic.%% F is a WxHxD Image with an arbitrary number of layers D.% X, Y are I_1 x ... x I_n matrices with the x and y coordinates to% interpolate.% Z is a I_1 x ... x I_n x D matrix, which contains the interpolated image channels.%% Notes:% ------% This method handles the border by repeating the closest values to the point accessed.% This is different from matlabs border handling.%% Example% ------%% %% The mandrills eye% clear% IMG=load('mandrill');% IMG = ind2rgb(IMG.X, IMG.map);% [Dx Dy] = meshgrid(130:0.1:250, -150:0.1:-50);%% R = [cos(pi/4) sin(pi/4); -sin(pi/4) cos(pi/4)];% RD = R * [Dx(:)'; Dy(:)'] + 250;% RDx = reshape(RD(1,:), size(Dx));% RDy = reshape(RD(2,:), size(Dy));%% methods = {'nearest', 'linear', 'cubic'};% la=nan(1,3);% for i=1:3% la(i) = subplot(2,2,i);% tic;% IMG_R = ba_interp2(IMG, RDx, RDy, methods{i});% elapsed=toc;% imshow(IMG_R);% title(sprintf('Rotation and zoom using %s interpolation took %gs', methods{i}, elapsed));% end% linkaxes(la);%% License:% --------% GPL% (c) 2008 Brian Amberg% http://www.brian-amberg.de/



Relates:
Methods - Nearest - Sizedx - Reshaperd - Dy039 - Sizedy - Dx039 - Sinpi - Ind Rgbimgx
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version 1.0
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