小编Shr*_*gli的帖子

我正在尝试编写有关图像压缩的代码。

I = imread('cameraman.bmp');
I = im2double(I);
T = dctmtx(8);
dct = @(block_struct) T * block_struct.data * T';
B = blockproc(I,[8 8],dct);

每当我尝试执行上述行时，都会遇到错误

error: matrix cannot be indexed with .
error: called from
    @<anonymous> at line 1 column 45
    blockproc at line 135 column 6

请帮我解决一下这个。谢谢。