Image Interpolation (ba_interp2) 1.0

% 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/

Requirements:	No special requirements
Platforms:	Matlab
Keyword:	Dx039,  Dy039,  Ind Rgbimgx,  Methods,  Nearest,  Reshaperd,  Sinpi,  Sizedx,  Sizedy
Users rating:	0/10