processing several images blocks

hi all,

i have 10 jpg image with same size 320x320, i've divided each image into 4x4 block. i need to access each block but it's failed. here's the codes

   folder = 'F:\Maya\pengenalan pola\tugas image retrieve\image';

fileList = dir(fullfile(folder,'*.jpg'));

for i = 1:length(fileList)
I{i} = imread(fullfile(folder,fileList(i).name));
out{i} = mat2cell(I{i},ones(320/80,1)*80,ones(320/80,1)*80,3);
end
imshow(out{1, 1, 1})

it returns error ??? Error using ==> iptcheckinput Function IMAGEDISPLAYVALIDATEPARAMS expected its first input, I, to be one of these types:

double, single, uint8, uint16, uint32, int8, int16, int32, logical

Instead its type was cell.

Error in ==> imageDisplayValidateParams at 12 iptcheckinput(common_args.CData, {'numeric','logical'},...

Error in ==> imageDisplayParseInputs at 79 common_args = imageDisplayValidateParams(common_args);

Error in ==> imshow at 199 [common_args,specific_args] = ...

but when i load only a single file like this

j = imread('Milk.jpg');
out = mat2cell(j,ones(320/80,1)*80,ones(320/80,1)*80,3);
imshow(out{1, 1})

it's just run correctly like what i need, returns image block(1,1)

really need you helps

thank you,

Maya

Answer 1

[Walter Roberson]

Note that out{1,1,1} is the same as out{1}, which is not the same as out{1}{1,1}

[Rusmaya Luthfina]

i got it Mr. Roberson, thx u.. i change it to imshow(out{1}{n}), where n is the block, and it works,

my i ask u a question??

is sit possible to perform RGB histogram to each blocks of each picture?

how do we do that?

thanks,

maya

Answer 2

[Rusmaya Luthfina]

my images are RGB, can we perform RGB histogram to each block of each image?