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Urmila


Actif depuis 2013

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Student at college of engg, pune,

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pixel acessing in xillinx using vhdl
I have stored pixels of image in brom in xilinx using vhdl , now i dont understand how to acess each pixel.plz help me.

plus de 10 ans il y a | 1 réponse | 0

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Question


1D dct equation implementation
i have written a code to implent 1D dct formula. but the results are not matching with result of inbuilt function 'dct' for the ...

plus de 10 ans il y a | 1 réponse | 0

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Question


pixel scrambling of image
I have done image scrambling by exchanging pixels using following method: 1. pn sequence is generated 2.For every bit value ...

plus de 10 ans il y a | 1 réponse | 0

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Question


image scrambling in matlab
I have a frame of size 144*176 and i have generated pn sequence of same size. now i want to scramble image by using following me...

plus de 10 ans il y a | 1 réponse | 0

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Question


pn sequence generation using independent seed
how to generate pn sequence using independent seed, and for the same seed the same sequence should be generated.i want to use it...

plus de 10 ans il y a | 1 réponse | 0

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Question


xor operation using loop
i have 1 dimentional array say p=[1 0 1 0 1 1 1 0 0], now i want to xor its bits like Q(l)= xor(p(i))...... where i=l,l+N,l+...

plus de 10 ans il y a | 1 réponse | 0

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Question


dividing image into blocks and access them seperately
I am diving image into 8x8 blocks 1) using loop kk=0; for i=1:(r/bs) for j=1:(c/bs) Block(:,:,kk+j)=...

plus de 10 ans il y a | 2 réponses | 0

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Question


Problem in blockwise zigzag processing of frame
I have two frames and i am dividing each frame into 8x8 blocks now i want to apply zigzag on each 8x8 block of both frames.here ...

plus de 10 ans il y a | 1 réponse | 0

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Réponse apportée
How to convert video into Frames
you can use mmreader(filemame) function. see matlab documentation on mmreader function.

plus de 10 ans il y a | 0

Question


feedback with carry shift register.I have tried to write fcsr code. can anybody tell whether it is write or I should have to do changes in that.
I have tried to write fcsr code. can anybody tell whether it is write or I should have to do changes in that.also I want help fo...

plus de 10 ans il y a | 1 réponse | 0

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Question


Bitwise addition if bit is 1.but not gettin answer.
I am taking one number and converting it into binary and checking each bit whether it is 1 and if it is 1 then is added to next ...

plus de 10 ans il y a | 2 réponses | 0

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Question


image compression using dct,zigzag scan and runlength coding.
hello, I am trying to compress an image by applying dct, zigzag scan and run length coding. but I am stuck at zigzag coding.so ...

plus de 10 ans il y a | 1 réponse | 0

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Question


Can anybody tell me how to apply cover up attack in matlab?
Actually i want to do tamper detection and for that i want to tamper the image by cover up attack.But i am very confused how to ...

plus de 10 ans il y a | 1 réponse | 0

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Question


why i am getting error in mmreader function?
when i write the following piece of code i am getting error. clc obj=mmreader('wildlife.wmv') vedio=rea...

presque 11 ans il y a | 1 réponse | 0

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Question


I am trying to implement LSB watermarking in matlab.But i am getting the error=> Assignment has more non-singleton rhs dimensions than non-singleton subscripts Error in ==> watermarked_image(ii,jj)=bitset(watermarked_image,1,watermark(ii,jj));
here is the code=> clc file1='C:\Users\Public\Pictures\Sample Pictures\Chrysanthemum.jpg'; [cover_image,map]=imread(file1);...

presque 11 ans il y a | 1 réponse | 0

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Question


I have 4*4 known matrix.i m converting it into binary and i want to embed text 'abc' into that. i am also converting it into binary.but i am getting error:Undefined function or method 'bitset' for input arguments of type 'char'.
%here is my code..what wrong i am doing? clc; a=[1:4;5:8;9:12;13:16] b=dec2bin(a,8) c=size(b,1) d=size(b,2) text...

presque 11 ans il y a | 1 réponse | 0

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