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Question
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 11 ans il y a | 1 réponse | 0
0
réponseQuestion
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 11 ans il y a | 1 réponse | 0
0
réponseQuestion
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 ...
presque 12 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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+...
presque 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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)=...
presque 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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 ...
presque 12 ans il y a | 1 réponse | 0
0
réponseHow to convert video into Frames
you can use mmreader(filemame) function. see matlab documentation on mmreader function.
presque 12 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...
environ 12 ans il y a | 1 réponse | 0
0
réponseQuestion
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 ...
environ 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
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 ...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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 ...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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);...
environ 12 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 12 ans il y a | 1 réponse | 0
