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Maranatha Christian University

Actif depuis 2012

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Professional Interests: steganography

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Question

blockproc and find best matching block with drms
i have problem with my work with matlab. i would like to know how to find best matching block with Drms. before that, i have to ...

presque 10 ans il y a | 1 réponse | 0

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Question

matrix operation make matrix
i have matrix A = rand(64,4), i want to process them to make new matrix where B = (K-A(:,1))*2 . k is multiply every 8, example ...

plus de 12 ans il y a | 1 réponse | 0

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réponse

Question

GUI process calling variable
i have a GUI about steganography. hiding and extract. my program in extract have to call variable in hiding process. what kind o...

plus de 12 ans il y a | 1 réponse | 0

1

réponse

Question

matrix operation make matrix
i want to make matrix. for manual way or the output A=[1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 ... 8 8 8 8 8 8 8 8...

plus de 12 ans il y a | 2 réponses | 0

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Question

matrix operation resize matrix
i have matrix, the size is 36x44. i want to process the matrix so the size is 48x48, but the different or the rest between 36x44...

plus de 12 ans il y a | 1 réponse | 0

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Question

binary process, biner to decimal
i have binary number 20 bit (uint8), i want to convert the binary number to decimal. i use bin2dec but before i must convert num...

plus de 12 ans il y a | 2 réponses | 0

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Question

least significant bit process
i have matrix A(64x72). A is bit number. i want to embed every number in A to last bits of image B(RGB) after dec2bin process. t...

plus de 12 ans il y a | 1 réponse | 0

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Question

cell operattion double to uint8
i have a cell A{64,4} and the type is double. i want to conversion double to uint8. but in matlab it is not possible because A i...

plus de 12 ans il y a | 2 réponses | 0

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Question

least significant bit process
i have matrix A, let we say, A=rand(1,256). A contains important coefficient. Because A is decimal like 0.xxxx, so i make B=A*10...

plus de 12 ans il y a | 1 réponse | 0

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réponse

Question

mat2cell operation coordinates cell
i have a program from my question in 14 feb 2013, answered by Azzi Abdelmalek. A=rand(4,4,4,4) [ii1,ii2,ii3,ii4]=size(A)...

plus de 12 ans il y a | 1 réponse | 0

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Question

operation array in cell
A=rand(13,13,8,8); B=rand(13,13,8,8); Z=mat2cell(Temp, [16 16 16 16 16 16 16 16 16 16 16 16 16] , ... [16 16 16 16 16 16 16 ...

plus de 12 ans il y a | 1 réponse | 0

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Question

operation array in cell
i have 2 matrix A and B and cell Z with 13*13 blocks. each blocks have 8*8 pixel. A=rand(13,13,8,8); B=rand(13,13,8,8); ...

plus de 12 ans il y a | 1 réponse | 0

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Question

operation array in cell
i have a problem. i have a cell A. cell A have 13*13 blocks (A{1,1},A{1,2},..., A{13,13})and every blocks have 8*8 pixels. i hav...

plus de 12 ans il y a | 1 réponse | 0

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réponse

Question

operation array in cell
i have problem with cell operation. i have 2 cells, first cell is A. A has 8*8 blocks and every blocks has 8*8 pixel. the seco...

plus de 12 ans il y a | 1 réponse | 0

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Question

mat2cell operation coordinates cell
i have problem with cell operation. i have 2 cells, first cell is A. A has 8*8 blocks and every blocks has 8*8 pixel. the second...

plus de 12 ans il y a | 1 réponse | 0

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réponse

Question

find the value matriks
this is my program. ihave 2 cells c and d. next, i got process rms in mintemp and i got the minimum value and the coordinate of ...

plus de 12 ans il y a | 1 réponse | 0

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Question

find value from matriks
i have matriks A with size (64,4), so the variables is part of A = [A1 A2 A3 A4] i want to process them, to find a value ei=A3-(...

plus de 12 ans il y a | 2 réponses | 0

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Question

find the location of minimum value
i have matrix with 4 variables, A=mintemp(a,b,c,d). i have find the minimum value especially at V=mintemp(:,:,1,1) dan the minim...

plus de 12 ans il y a | 3 réponses | 0

3

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Question

find the parameter of affine transform
how to find the parameter of affine transform, especially to get the coordinates the block to apply the affine transform to get ...

plus de 12 ans il y a | 1 réponse | 0

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Question

find the minimum value
i have a matrix A with double class type data. i have to find the minimum value of matrix, the problem is the min function on ma...

plus de 12 ans il y a | 1 réponse | 0

1

réponse

Question

mat2cell operation - add operation every cell
i have an mat2cell A 12*12 blocks cell, each cell there's 8*8 pixel. then i have mat2cell B 8*8 blocks cell wih each cell there'...

presque 13 ans il y a | 1 réponse | 0

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Question

how to divide image to overlapping blocks
how to divide image to overlapping blocks using blockproc or mat2cell.

presque 13 ans il y a | 2 réponses | 0

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Question

how to divide image to overlapping blocks
i have an image 256*256, i want to divide the image to 16*16 every blocks. every 4 pixel, i want to take one blocks and continue...

presque 13 ans il y a | 1 réponse | 0

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Question

part of fractal image compression
does anyone know how to partition YUV images to nonoverlapped blocks and overlapped blocks ?? then i have to find best matched b...

environ 13 ans il y a | 1 réponse | 0

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Question

matlab code for fractal image compression ?
matlab code for fractal image compression ??

environ 13 ans il y a | 1 réponse | 0

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Réponse apportée
how to downsample YUV colour image but downsample process only in U and V components ??
thank you for your help, and how about my next question ? about partition images into nonoverlapped blocks ?

environ 13 ans il y a | 0

Question

how to downsample YUV colour image but downsample process only in U and V components ??
how to downsample YUV colour image but downsample process only in U and V components ?? and after that, i'm reaaly confused how ...

environ 13 ans il y a | 2 réponses | 0

2

réponses