Matlab影像處理(二)背景相減

%%影像相減

close all; clear; clc;

img = double(imread('img.jpg'));

bgimg = double(imread('backGround.jpg'));

[row, col] = size(img(:, :, 1));

outputimg  = zeros(row, col);

binaryimg = zeros(row, col);

T=10;

for i=1:row

    for j=1:col

        outputimg(i, j) = (( bgimg(i, j, 1)-img(i, j, 1) ).^2 + ( bgimg(i, j, 2)-img(i, j, 2) ).^2 + ( bgimg(i, j, 2)-img(i, j, 2) ).^2).^0.5;

        if outputimg(i, j) > T

            binaryimg(i, j) = 255;

        end

    end

end

subplot(2, 2, 1), imshow(uint8(img)), title('原圖')

subplot(2, 2, 2), imshow(uint8(bgimg)), title('BG圖')

subplot(2, 2, 3), imshow(uint8(outputimg)), title('相減後')

subplot(2, 2, 4), imshow(uint8(binaryimg)), title('二值化')