matlab - 使用matlab组合图像数量

Question

我正在尝试在 matlab 中组合图像数量。组合图像的数量最多为四个。我希望它们根据图层的概念（如在 Photoshop 中）进行组合，而不是连接在一起。这意味着结果图像的大小将与每个组合图像的大小相同。是否有一个 matlab 函数可以正确完成该任务？

Answer 1

尝试这个：

img1 = imread...
img2 = imread...
img3 = imread...
img4 = imread...

combined_img(:,1) = img1;
combined_img(:,2) = img2;
combined_img(:,3) = img3;
combined_img(:,4) = img4;

现在您有一个 4 层图像，您可以通过 combine_img 的第三个索引访问它。以下命令将显示第一张图片：

imshow(combined_img(:,1));

Answer 2

这就像你描述的那样：

function imgLayers


    % initialize figure
    figure(1), clf, hold on

    % just some random image (included with Matlab) to server
    % as the background
    img{1,1} = imresize(imread('westconcordaerial.png'), 4);    
    img{1,2} = [0 0];

    % rotate the image and discolor it to create another image
    img{2,1} = uint8(imresize(imrotate(img{1}, +12), 0.3)/2.5);
    img{2,2} = [150 20];

    % and another image
    img{3,1} = uint8(imresize(imrotate(img{1}, -15), 0.5)*2.5);
    img{3,2} = [450 80];

    % show the stacked image
    imshow(stack_image(img));

    %% create new image, based on several layers

    function newImg = stack_image(imgs)

        % every image contained at a cell index (ii) is placed 
        % on top of all the previous ones (0:ii-1)

        rows = cellfun(@(x)size(x,1),imgs(:,1));
        cols = cellfun(@(x)size(x,2),imgs(:,1));

        % initialize new image        
        newImg = zeros(max(rows(:)), max(cols(:)), 3, 'uint8');

        % traverse the stack
        for ii = 1:size(imgs,1)

            layer  = imgs{ii,1};
            offset = imgs{ii,2};

            newImg( offset(1)+(1:rows(ii)), offset(2)+(1:cols(ii)), :) = layer;

        end   
    end   

end

不过要小心——没有足够的绑定检查等。所以你必须做一些自己的发展。但这应该足以让你开始:)