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yashi gautam


Actif depuis 2015

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Question


What is the error in this code for HSV image watermarking?
Dear Sir, The code for watermarking of a color image with four different color images is given below, using HSV color space. Kin...

plus de 8 ans il y a | 1 réponse | 0

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réponse

Question


How can this code explain the Error in psnr?
Sir, I have calculated psnr for rgb colored watermarked image to be 30 something. When i use a similar method on YCrCb image. th...

plus de 8 ans il y a | 1 réponse | 1

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réponse

Question


How to apply contourlet transform to r color channel of a color image?
Sir, I am using 'Lena.,jpg' color image. obtaining r= (:,:,1), Kindly guide me how to modify this using CT in matlab? I have no...

plus de 8 ans il y a | 1 réponse | 0

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réponse

Question


How to do watermarking using Counterlet transform?
Sir, I have used SVD technique to watermark a color image into another with the purpose of hiding the former image. Kindly guid...

plus de 8 ans il y a | 1 réponse | 0

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réponse

Question


how to do watermarking using dct.
Respected sir, I have made the following code for watermarking in dct domain. org_img= imread('lena.jpg'); img4x4 = m...

presque 9 ans il y a | 1 réponse | 0

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réponse

Question


how to embedd a watermark using dct on a colored rgb image
Sir, I have done watermark embedding using haar wavelets. Kindly guide me how to use dct instead of haar wavelets. I have s...

presque 9 ans il y a | 1 réponse | 0

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réponse

Question


How to recombine a color image divided into blocks?
Dear sir, i used the following code to divide a color image into 4 blocks: img4x4 = mat2cell( org_img, size(org_img,1)/2 * o...

presque 9 ans il y a | 1 réponse | 0

1

réponse

Question


How to correct matrix dimensions and recombine blocks into original image?
Dear sir, Following is the code I wrote for dividing a color image (512x512) into 4 blocks and watermarking 4 different images i...

environ 9 ans il y a | 1 réponse | 0

1

réponse

Question


how to recombine blocks of an image into one?
Dear sir, I am working on Watermarking. I divided a color host image into blocks using mat2cell. i hid watermark image...

environ 9 ans il y a | 1 réponse | 0

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réponse

Question


how to divide a color image into blocks?
sir, my project is watermarking into a colored image(divided into 128x128 dimension 4 blocks) using dwt and svd technique. I...

environ 9 ans il y a | 1 réponse | 0

1

réponse