Watermarking - Science topic

and are each posted illegally (I am the senior editor of the book, in which these chapters appear).

I have written to the authors of these chapters today demanding they be removed.

Kind Regards

Colin Butler

Colin D. Butler PhD, MSc, BMed, DTM&H Honorary Professor, National Centre for Epidemiology and Population Health and Institute for Climate, Energy and Disaster Solutions, Australian National University, Canberra, ACT, Australia

pursuing phd on geospatial data security.suggest good paper on robust invisible blind watermarking for copyright protection

2 Logistic chaotic sequences generation, we are generating two y sequence(Y1,Y2) to encrypt a data

2D logistic chaotic sequence, we are generating x and y sequence to encrypt a data

whether the above statement is correct, kindly help in this and kindly share the relevant paper if possible

I want to use MSE in watermark metrics, but there is an RMSE , so what is the difference and which one is better?

Is there a standard dataset of medical images for cryptography, watermarking, and steganography projects that has received much attention in the research literature?

How one can prove that the proposed scheme is reversible? Any objective parameters that can be used to claim this?

If LSB technique is combined with any frequency domain (DCT, DWT,SVD etc.) watermarking scheme. Is this technique (DWT-LSB) or(DCT-LSB) etc. can be considered as hybrid domain watermarking?

OR only two frequency domain techniques are combined than it is termed as Hybrid domain?

1. Images must be original (with no watermarks or software generated)

2. Images of intact bones and bone fractures are needed

What is the main reason that most of the researcher uses ACM to encrypt the watermark? There is various other image encryption technique but for watermarking ACM technique is used?

Hi all, is it possible to send video information secretly in invisible video watermarking, not for copy right protection?

means

information - video & cover - video

if possible, send any related research paper to prasanna.vajrala@gmail.com

I am looking for free images of plant anatomical structures to be included in a book on plant anatomy. Specifically, I am looking for light microscope images of plant cells and tissues. I have many I have taken myself, but still are missing a few. The sites I have found have watermarked images. I would also like you to recommend a manual on how to cite the source of these images while respecting copyrights. Any information will be appreciated.

I am working on a watermarking algorithm in the contourlet domain using svd and optimization algorithm. The result of psnr value is 72db when no attack has taken place . My question is whether this value could be an acceptable value.

thanks

I want to implement steganography to image to hide data and then implement watermarking algorithm to ensure the owner.

Someone suggest me to use cloudsim software.

Is it possible to implement this and how to implement this?

I am doing image watermarking in DWT domain, after the attacked watermarked image image I have to extract the watermark back using PSO optimization algorithm. I am not understanding how can we apply PSO in watermarking and embed optimized value of alpha. Anyone can help me out with codes ?

I need the time complexity in form of asymptotic order for different watermarking techniques like LSB, DFT, DCT, DWT, SVD, WHT, etc. I there any paper in which the detailed comparison is carried out??

Hi everyone,

I am analyzing pages of a newspaper over 100 years and I want to understand whether the mean length of the copy increased or decreased over time. Since I have two years that can serve as watermarks, I divided my data into three groups (i.e. time periods) and I performed a one-way ANOVA to check differences among groups. Statistics is not my suit and I want to know whether it makes sense or not (I know that there is a risk of autocorrelation). I was thinking to use time series analysis, but my observations are not equally spaced (there are even gaps of years between observations).

Can someone help me out? Thanks in advance

PS: I am using SPSS

Maximum of image watermarking scheme has been implemented in DWT domain. In that also watermarking is done in LL Sub band . Why watermarking is not preferred in other sub-band specially in HH sub-band.

Hello, I am working on a graduation project on audio watermarking, and I have found many articles on the subject, but I could not choose an algorithm to do the practice, I would like it to be the most robust and most imperceptible found today, can you help me make the best choice? Thanks to all.

C = normxcorr2(template,A) is not working.

when using this [peaksnr,snr]=psnr(watermarked_rgb,host); value is 44.13 and 38.39 but when using MSE=mse(watermarked_rgb,host); value is 0.2456,0.2146 and 0.2691 respectively. If you use the mathematical equation PSNR = 10log10(255*255/MSE) values came 54.So which one is correct.

I want a hardware which support MATLAB code code for my data hiding algorithm . Kindly suggest me the hardware board which support MATLAB code.

Apart from extra security, what are the advantages of the non-blind watermarking scheme over blind and semi-blind techniques

Dear, I would like to know if the audio watermarking has a meaning for speaker recognition task. Because most documents talk about music audio files watermarking to prove ownership. Also, can audio watermarking be used for security purpose ?

Recently, what kind of challenges and limitation are there in watermarking, especially in the development of Database and text watermarking techniques

I am looking for the definition of adaptive watermarking. I will be glad if you will recommend some papers where definition of adaptive watermarking is given.

"PSNR of image increase an the entropy of image increase (in watermarking)". How one can prove this statement mathematically.

Maximum of research paper on Dwt Watermarking follows the equation Watermarked=Cover +(alpha * watermark) but few paper uses, Watermarked=(1-alpha)Cover +(alpha * watermark). What is the difference between these two equation and whats its impact on watermarking scheme.

attached the extracted watermark image. is completely distorted than the original ... and the psnr is very high???

There are lots of watermarking survey based on particular techniques, like reversible, or based on image , or audio only. There is not a single survey paper which deals with audio video image in the same.

I am working with DWT using 'haar' wavelet. I have done the embedding and extraction process. After these steps were achieved i decided to add an attack on the already watermarked image. This step is also achieved. My problem is, I am trying to extract the watermark image using the attack watermarked image. I am sure what I am doing is the right thing. I need on how to extract using the attacked image?

Lots of comparison has been done between the stenography and watermarking techniques but , what is the main difference between the lsb based stenography and lsb based watermarking.

Steganography is the art and science of hiding information by embedding messages within other, seemingly harmless messages. Steganography means “covered writing” in Greek. As the goal of steganography is to hide the presence of a message and to create a covert channel, it can be seen as the complement of cryptography, whose goal is to hide the content of a message. Another form of information hiding is digital watermarking, which is the process that embeds data called a watermark, tag or label into a multimedia object such that watermark can be detected or extracted later to make an assertion about the object. The object may be an image, audio, video or text only. In steganography a covert channel is the medium for sending stego messages. Observes are unaware of any kind of data hidden in the medium. For a steganography technique to be effective, it must be resistant to various steganalysis attacks, it must not degrade the fidelity of the image. The data should be hidden in such a way that it is indistinguishable for a human eye. Audio steganography embeds the message into a cover audio file as noise at a frequency out of human hearing range. Data Hiding by LSB: Various techniques about data hiding have been proposed in literatures. One the common techniques involve least significant bit manipulation by directly replacing LSB bit planes with message bits.

Papers:

P Huang. K.C. Chang., C.P Chang. and T.M Tu. A novel image steganography method using tri-way pixel value differencing. Journal of Multimedia, 3, 2008.

H. Inoue, A. Miyazaki, T. Katsura, “An Image Watermarking Method Based On the Wavelet Transform.” Vol. 1,pp. 296-300. Aug 2002.

C.K. Chan. and L. M.Cheng. Hiding data in images by simple lsb substitution. Pattern Recognition, 37:469–474, 2004.

Ahmad T. Al-Taani. and Abdullah M. AL-Issa. A novel steganographic method for gray-level images. International Journal of Computer, Information, and Systems Science, and Engineering, 3, 2009

What frames per seconds can be considered as video ?

I have downloaded the file from below link .

Thank you in advance.

Hi, I am working on image watermarking using dtcwt(dual tree complex wavelet transform).

My question is:

1)Does my understanding that decomposition using this technique produces 8 sub bands for each tree(4 real and 4 imaginary)? And if yes, how can I get the coefficients of each sub band(HL,LH,HH).I see the explanation of MATLAB, but I can't get it.

I want the present day standards for digital image watermarking. For example, for a  proposed watermarking technique how much should be the PSNR for its acceptance by the industry?

Is there any algorithm for reversible image watermarking that can be used for both spatial and frequency domain?

DWT algo for embedding watermarks on audio signals.

I need a Matlab code for an intelligent watermarking approach based particle swarm

optimization in discrete wavelet domain.

hello,

I'm looking for source code free for dwt "Discrete Haar Wavelet Transfermate" to image watermarking

Please help me

I have a watermarked image I need to apply some attacks , I do fragile watermarking and now I cant define vq attack and text addition in matlab.my image is a grayscale image,I would appriciate any help .

I want to learn the use of machine learning for image watermarking from basics

I am working on image watermarking.

I already heard and read many articles about using genetic algorithm for secure and robust watermarking.

How to combine these two?

Audio signal watermark

I am working in fragile watermarking i generate the watermarkbits with svd and fsdwt so the values are negetive and i dont know how to change it to binary bits

Mainly rotation attack

what's new one can do in digital image watermarking using LSB method for the research work? 

Someone can orient me to an audio watermarking method in the time domain but it does not use transormes In order to implement it on DSP. thank your for your help

Dear Researchers,

I am novel researcher of image processing. I am researching  and developing new digital image watermarking method. For evaluation of this research, I need to compare the original image and watermarked image. Then I have to calculate degradation or information loss of watermarked image (after watermark embedding process). I need to know how this evaluation done and what are the tools I can use to this evaluation?

Thanks and Best Regards,

I am working on a watermarking project using dwt and dct . The embedding seems to be correct, but after the embedding using alpha equation, the resulted watermarked image has a mix of negative and positive values, when I converted to uint8 the watermark can not be extracted. If I save it as double image (tif format),the watermark is extracted correctly, But if I attacked the double image , the watermark is lost completely because matlab convert it in the range[0,1],

What is the correct way to save and manipulate watermarked image to extract the watermark with any data loss(without attack) and how to extract it with attacks?

plz help me I do not have any time more

thanks

Hello, does anyone have an example of Matlab source code for image watermarking using ABC algorithm to optimize the scaling factor?

I read many papers using this kind of algorithm but I'm confused about the order where to implement ABC algorithm! Is it after the watermark embedding and extraction method? then apply ABC to get scaling factor and use the selected one for the same image watermark embedding? I'm a bit confused!! Does anyone of you have an idea?

Thank you in advance.

I have to classify a medical image in ROI(Region of Interest) and RONI(Region of Non Interest) for image watermarking, but NOT able to create predictor data or features for SVM. Please help me.

Hello, I'm working on image watermarking, I use DWT and SVD and I want to embed a watermark in some coefficients that changing in them wont destroy the quality of the image, do you have any idea how? should I use the edge detector for this or selecting the ROI of the image? I'm a bit confused!

Thank you in advance

i have worked on image processing for image fusion and image watermarking.

At present time i want to work on big data analysis and apply it in medical image processing. 

Hello, I want to optimize the threshold of insertion in my image watermarking technique and I want to use the ABC optimization. I'm a little confused about 2 things:

Could you please help me or give some examples? thank you in advance :)

Hello,

Could you like please to gave me some articles for uncompressed video fragile watermarking? I need them for comparison with my method.

Thank you very much

I'm working on image watermarking and I want to apply the Abc optimization algorithm ( Artificial Bee Colony) to find a threshold for inserting a watermark. I read in some articles like here and I'm asking how can I choose the parameters and the objective function to get a threshold or scaling factor for insertion?

 

I am trying to implement the video watermarking based on visual cryptography. I have created two share of a image in '.bmp' formats. How these two shares will be embedding  in the video while using the frequency domain.

I have divided the video into parts ( Suppose the video consisting 300 frames. In this way each part is having 150 frames each) to embed these share in two different parts. I have extracted the Y component of each part of the video. On which I had applied the DWT. Extract the HH Band. Apply SVD. And get the singular matrix.

How could I process the two share of transparencies in order to embed into the singular value obtained of these two parts of video as indicated above. Also requested to please tell me the extraction process of these two transparencies from watermarked video ?  

I have seen that nobody design a reversible semi-fragile audio watermarking. However, there are many reversible semi-fragile image watermarking specially for medical images.

I would like to know the logic behind this.

Can anyone explain why?

I have found some watermarking techniques such as 

1. watermarking using QIM

2. histogram modification based reversible watermarking.

3. prediction-error expansion based reversible watermarking approach

i dont know i am in corrrect direction. these three techniques are the latest one else please suggest some different technique  

How to calculate data capacity of watermarked image?

I want to hide Image file into .WAVE audio file using LSB Algorithm.

kindly suggest any of the paper  with watermarking and neural network

Does anybody have experience with watermarking in 3D models?

I would appreciate any advice.......?

Digital watermarking of digital images

I need to introduce some few strong sift key points in an image. I have studied SIFT algorithm(few concepts are not clear), but while reading a paper, they are introducing new sift key points as a watermark by updating the pixel intensity value non-linearly. I am not able to link with the theory of SIFT concept with this one. Any suggestions on this regard will be very helpful for me. If I want to introduce a new sift key point in an image, what I want to do?? Thanks in advance.

Using dwt transform and using host+@watermark signal where @ is 0.3.

website or book that gives details to how implement this algorithm programmatically in simple way

Hello

Please do you have some articles in fragile watermarking for videos?

Thank you very much

Hello,

I am working with opencv and c++ to watermark a video but the problem is that when I write the video watermarked the watermark is damaged due to compression of codecs using during the writing phase of video. Are there any tools to work with uncompressed videos or to solve this problem?

Thank you very much

Inquiry into the practical performance of audio watermarking.

So far I have an idea that in QIM we first modulate the index of the multiple orthogonal quantizers as per the code bits. In dither modulation good noise is added first and then quantized.

Can you explain a bit more to direct me in implementation of QIM? Also, it would be nice of you if you suggest some good references.

I am trying to reconstruct a watermarked image through sparse signal recovery technique. I've taken a gray-scale LOGO image as an watermark and trying to reconstruct a watermarked image through BASIS PURSUIT principle but failing to retain the robustness of watermark under common image processing operation e.g. filtering, cropping etc. If anyone can shed light on  this then it will be highly appreciated. thanks in advance

I haven't found any paper that provides an elementary analysis.

Here is the steps that I am successful so far :

1.Apply 3Level of DWT to host image

2.Apply SVD to one of the subbands

3.convert the subband and SV's to semi-binary using my own algorithm which will convert a number such as 205.36 to a semi-binary form like :

1.36 0 1 1 0 0 1 1

4.insert my watermark inside the frist and second LSB of the semi-binary form

5.Apply the reverse SVD

6.Apply the IDWT

Until here my watermark is remain intact But when I am going to write the image like

% convert back to uint8

WImg8=uint8(WImg);

imwrite(WImg8,'dwt_watermarked.bmp','bmp');

After extracting the watermark , the watermark is something else, I was wondering if I am doing something wrong? DO I have to convert the whole thing to uint8? because otherwise the written image is one blank image if I don't convert it to unit8

I am trying to write a code to watermark some binary information inside the SVD form of DWT of image. Here are the steps that I am successful with so far:

1. Apply 3 Level of DWT to host image

2. Apply SVD to one of the sub-bands

3. Convert the sub-band and SVs to semi-binary using my own algorithm, which will convert a number such as 205.36 to a semi-binary form like this:

1.36 0 1 1 0 0 1 1

4. Insert my watermark inside the first and second LSB of the semi-binary form

5. Apply the reverse SVD

6. Apply the IDWT

Until here my watermark remains intact, but when I am going to write the image like this:

% convert back to uint8

WImg8=uint8(WImg);

imwrite(WImg8,'dwt_watermarked.bmp','bmp');

after extracting the watermark , the watermark is something else, I was wondering if I am doing something wrong. Do I have to convert the whole thing to unit8? Otherwise the written image is one blank image if I don't convert it to unit8.

Convex optimization or classical optimization etc