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amitesh kumar


自 2011 起处于活动状态

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Professional Interests: Image processing

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Normalised Correlation Value after applying DCT
Hello everyone i am applying image normalization technique and DCT technique for embedding and extraction watermark image. he...

13 years 前 | 0 个回答 | 0

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CDMA based using multiple PN sequences embeded into whole object
hii everyone I am trying to run this watermark embedding code. my cover image size is 512x512, watermark image is 64x64 and...

13 years 前 | 0 个回答 | 0

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Image extraction from Watermarked image
Hello everyone... I am trying to extract "watermark image" from a watermarked image. For this i am selecting original image o...

13 years 前 | 1 个回答 | 0

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watermark Embedding in Blocks
hello everyone i want to embed watermark in image of size 512*512 & watermark size is 64*64. first of all i am converting origi...

13 years 前 | 3 个回答 | 1

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Error in Image Embedding....
thnku so much *Walter*...got executed prog successfully...i am getting original image, watermark image in perfect manner ..but t...

13 years 前 | 0

已回答
Error in Image Embedding....
Thnx sir for ur answer. w(m,n)=0; planes{8}=ones(m,n); planes{8}= and(planes{8},w); % Adding the WaterMark ...

13 years 前 | 0

提问


Error in Image Embedding....
Hello i am trying to run following code... i=imread('lena.tif'); s=double(i); j=imread('watermark.bmp'); w=double(j); ...

13 years 前 | 3 个回答 | 0

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DCT transformation
hello i am trying to apply DCT transformation on image of size 512*512. for applying DCT i use following code I = im2doub...

14 years 前 | 1 个回答 | 0

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已回答
How do I fix a "Subscripted assignment dimension mismatch."
%This program decode the watermark from the single embed watermarked image clc c=1; t=1; %To read in the watermarked image ...

14 years 前 | 0

提问


How do I fix a "Subscripted assignment dimension mismatch."
clc c=1; t=1; % To read in the watermarked image [watermarked_image cmap]=imread('lsb_image.bmp'); waterma...

14 years 前 | 3 个回答 | 0

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how to get low pass filter from image
When I am trying to run the following code, it is giving an error [ ??? Input argument "P" is undefined. Error in ==> idealf...

14 years 前 | 1 个回答 | 0

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Low-pass filter for image
When I am trying to run the following code, it is giving an error [ ??? Input argument "P" is undefined. Error in ==> i...

14 years 前 | 2 个回答 | 0

2

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Image retrieving
is it possible to get the original image back after applying fft and log polar transformation on image and its inverse .plz rep...

14 years 前 | 1 个回答 | 0

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Hadamard Transformation
Hello everyone I would like to know that how to generate *Complex Hadamard Transformation Matrix* for N*N matrix . Is it poss...

14 years 前 | 1 个回答 | 0

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Complex to Imaginary & Vice -Versa
Hello everyone I am applying fft on image which giving me complex value . for getting magnitude i am using " X = abs(Y)" f...

14 years 前 | 2 个回答 | 0

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log-polar mapping conversion
I want to change 512*512 pixel gray image into log-polar format. What is the exact procedure to convert it. I tried this with th...

14 years 前 | 2 个回答 | 0

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