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# Tia

Active since 2013

hi
Professional Interests: image processing

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Question

could you tell me how to write the script matlab about sigma problem
hello.. if i have this equetion: G =256 E = Sigma C.^2 i,j=1 i,j how to compute in matlab? Tha...

9 years ago | 1 answer | 0

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Question

what can i do for this problem?
i want to use circshift on each 4096 blocks. each block has 8x8. what can i do? example : val(:,:,1) = 1.0e+0...

10 years ago | 2 answers | 0

### 2

Question

how to random -1 and 1?
m=round(2*rand(8)-1) the output: m = 1 0 0 1 0 0 0 -1 1 1 0 ...

10 years ago | 4 answers | 1

### 4

Question

how to scramble it?
here's codes I=imread('filename'); %256x256 pixels %split it into block 64x64 ul=I(1:256,1:256); ur=I(1:256,257:512)...

10 years ago | 0 answers | 0

### 0

Question

how to random cell array?
hello, i used mat2cell to split block 8x8 pixels. how to random each cell?which function compatible applied on it? thanks

10 years ago | 0 answers | 0

### 0

Question

how to make it short codes?
hi all.. if i have value of each block *8x8* pixels. i'm looking for how to random each block? any idea for it? but it's not ...

10 years ago | 2 answers | 0

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Question

how to modulate the signal with qpsk modulation?
i have matlab code BPSK modulation as below which c_data is the signal output of quantize tx = 2*c_data - 1;%BPSK modulation ...

10 years ago | 0 answers | 0

### 0

Question

how to split and store it into one arrray?
hello.. i'm trying to split image into block 8x8, then extract the pixel values from each block. i want to move position of blo...

10 years ago | 1 answer | 0

### 1

Question

could you fix these codes?
I=imread('filename'); a1=I(1:8,1:8); a2=I(1:8,9:16); a3=I(1:8,17:24); a4=I(1:8,25:32); b1=I(...

10 years ago | 3 answers | 0

### 3

Question

how to rearrange each block into a column vector?
example, i have an image,it's 256x256pixel,then i split it into 8x8. How to rearrange each block 8x8 into column vector and form...

10 years ago | 1 answer | 1

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Question

how to reconstruct an image?
hi.. can you help me? I've these code, example : I=imread('filename'); image_top_left = I(1:256,1:256); image_top_r...

10 years ago | 2 answers | 0

### 2

Question

can you fix this matrix?
m=ones(4); x=-1; for i=1:3; m(1,1)=-x; m(1,1+i)=x; m(2:end,1:end)=x; end i want to make it's shorter and easier. can ...

10 years ago | 1 answer | 0

### 1

Question

how to random value?
how to random value 2 until 3? example: >> a=rand(1) a = 0.8833 but i want the answer 2,3 or 2,5 or 2,6, or 3...

10 years ago | 2 answers | 0

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Question

can you explain me about these code?
if (nargin < 2 || nargin > 5) mssim = -Inf; ssim_map = -Inf; return; end Thanks

10 years ago | 1 answer | 0

### 1

Question

how to permute matrix here?
Hi.. I have an image 128x128pixels. then it is divided into 8x8 block. so that we get 16 subblocks. each 8x8 block, i would like...

10 years ago | 1 answer | 0

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Question

anyone could you tell me how to make it simple code?
m = [1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

10 years ago | 1 answer | 0