% 读取Lena.bmp图像lena = imread('Lena.bmp');% 将图像转换为二进制图像lena_bin = de2bi(lena, 8);% 分解成8个位平面bit_planes = cell(1, 8);for i = 1:8 bit_planes{i} = lena_bin(:, :, i);end% 分别去掉从1到7个位平面，并与剩余的位平面图像进行比较for i = 1:7 % 去掉第1到第i个位平面 removed_planes = bit_planes; for j = 1:i removed_planes{j} = zeros(size(removed_planes{j})); end % 重构图像 removed_lena = bi2de(cat(3, removed_planes{:})); % 与剩余的位平面图像进行比较 remaining_planes = bit_planes; for j = i+1:8 remaining_planes{j} = zeros(size(remaining_planes{j})); end remaining_lena = bi2de(cat(3, remaining_planes{:})); diff = abs(removed_lena - remaining_lena); % 显示去掉第1到第i个位平面后的图像和与剩余的位平面图像比较的结果 figure; subplot(1, 3, 1); imshow(removed_lena); title(sprintf('Removed bit planes %d-%d', 1, i)); subplot(1, 3, 2); imshow(remaining_lena); title(sprintf('Remaining bit planes %d-%d', i+1, 8)); subplot(1, 3, 3); imshow(diff, []); title('Difference');end的bit_planes{i} = lena_bin(:,:,i);的索引超出矩阵维度

这个错误可能是因为Lena.bmp图像读取后不是一个二维矩阵，而是一个三维矩阵。你可以尝试添加一个判断语句，确认Lena.bmp图像是否为三维矩阵，然后对第三维做处理。下面是修改后的代码：

% 读取Lena.bmp图像
lena = imread('Lena.bmp');

% 将图像转换为二进制图像
if ndims(lena) == 3
    lena_gray = rgb2gray(lena);
else
    lena_gray = lena;
end
lena_bin = de2bi(lena_gray, 8);

% 分解成8个位平面
bit_planes = cell(1, 8);
for i = 1:8
    bit_planes{i} = lena_bin(:, :, i);
end

% 分别去掉从1到7个位平面，并与剩余的位平面图像进行比较
for i = 1:7
    % 去掉第1到第i个位平面
    removed_planes = bit_planes;
    for j = 1:i
        removed_planes{j} = zeros(size(removed_planes{j}));
    end
    
    % 重构图像
    removed_lena = bi2de(cat(3, removed_planes{:}));
    
    % 与剩余的位平面图像进行比较
    remaining_planes = bit_planes;
    for j = i+1:8
        remaining_planes{j} = zeros(size(remaining_planes{j}));
    end
    remaining_lena = bi2de(cat(3, remaining_planes{:}));
    diff = abs(removed_lena - remaining_lena);
    
    % 显示去掉第1到第i个位平面后的图像和与剩余的位平面图像比较的结果
    figure;
    subplot(1, 3, 1);
    imshow(removed_lena);
    title(sprintf('Removed bit planes %d-%d', 1, i));
    subplot(1, 3, 2);
    imshow(remaining_lena);
    title(sprintf('Remaining bit planes %d-%d', i+1, 8));
    subplot(1, 3, 3);
    imshow(diff, []);
    title('Difference');
end

这段代码添加了一个判断语句，如果Lena.bmp图像是一个三维矩阵，就将其转换为灰度图像。这样就可以确保Lena.bmp图像是一个二维矩阵，可以正确地分解成8个位平面。