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Urmila


自 2013 起处于活动状态

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Student at college of engg, pune,

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提问


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.

10 years 前 | 0 个回答 | 0

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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 ...

10 years 前 | 0 个回答 | 0

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提问


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 ...

10 years 前 | 0 个回答 | 0

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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...

10 years 前 | 1 个回答 | 0

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提问


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...

10 years 前 | 1 个回答 | 0

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提问


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+...

11 years 前 | 1 个回答 | 0

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提问


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)=...

11 years 前 | 2 个回答 | 0

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提问


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 ...

11 years 前 | 0 个回答 | 0

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

11 years 前 | 0

提问


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...

11 years 前 | 0 个回答 | 0

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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 ...

11 years 前 | 2 个回答 | 0

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提问


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 ...

11 years 前 | 1 个回答 | 0

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提问


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 ...

11 years 前 | 1 个回答 | 0

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提问


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...

11 years 前 | 1 个回答 | 0

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提问


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);...

11 years 前 | 1 个回答 | 0

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提问


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...

11 years 前 | 1 个回答 | 0

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