matlab codes for embedding visible watermarks

[Krutarthbhatt]

orientation matching matlab code

Hello All

I am working in Image processing field where i am required to embedd the watermark in the transform domain like wavelet,fractal,DCT domain. So can any one suggest me good links or E-book related to wavelet and Fractals as well as on Fractal Image Compression

Thanks in Advance

Krutarth Bhatt

 

[ahmadagha23]

Re: Image Processing

hi do you see this site:

https://www-stat.stanford.edu/~wavelab

I am doing so with dsp and fpga.

 

[ramesh]

Re: Image Processing

Hi

Visit this site for "Advanced Image Processing" lecture notes on

DCT and WAVELET Image compression
JPEG 2000 COMPRESSION
IMAGE INTERPOLATION
FINGERPRINT MATCHING
FACE DETECTION/RECOGNITION

**broken link removed**

 

[Krutarthbhatt]

Re: Image Processing

Thanks for the links
I also want some good material related to Fractals and its application in Image compression.

 

[kunal]

Re: Image Processing

hello krutarth

i think this link could be of great help to u.u'll find many e-books here including many on image processing

**broken link removed**

hope u be benefitted ....
bye

 

[whorse]

Image Processing

for dedicated purpose processing you the better find some technical thesis

 

[zkai2000]

Re: Image Processing

excuse me,do u know the way to change a scanned image into a binary image using Visual C++? i need help in my fingerprint recognition system project. thanks!

 

[Krutarthbhatt]

Re: Image Processing

See, I can suggest you for C as well as for Matlab but VC++ I dont know.

 

[zkai2000]

Re: Image Processing

umm....do u mind showing me the coding for C? thanks!

 

[CMOS]

Re: Image Processing

excuse me,do u know the way to change a scanned image into a binary image using Visual C++? i need help in my fingerprint recognition system project. thanks!

Use "Threshold" operation for converting grey scale images to binary. i.e your code will be like this

	for(int y = 0; y< y_max; y++)
	{
		for(int x = 0; x< x_max; x++)
		{
			if(input_image[x][y] >= Threshold)
				output_image[x][y] = 255;
			else
				output_image[x][y] = 0;
		}
	}

The resulting image will be a 2-D array with each byte representing one pixel having value either 0 or 255. Ofcourse you can compress your image using further modification to this code to accomodate 8 pixels within one byte.

 

[zkai2000]

Re: Image Processing

CMOS, how do i make a threshold function for it?

issit possible if i add a orientation(change of angle) algorithms after getting the array map?

(im doing a fingerprint matching software. change of oritentations of scanned fingerprints will affect the matching part.thus, i need to apply the algorithms)

Thanks so much for your idea!!

 

[CMOS]

Re: Image Processing

Hi
Like this

void Threshold (int **in_image, int x_max, int y_max, int threshold)
{
	for(int x=0; x<x_max; x++)
	{
		for(int y=0; y<y_max; y++)
		{
			if (in_image[x][y] >= threshold)
				in_image[x][y] = 255;
			else
				in_image[x][y] = 0;
		}
	}
}

Note: in_image is a 2-D array containing your image.

Once you have got the image, you can do any type of transformation on it.

If you have any more questions, please start a new topic for it. I think we are diverting the main subject over here.

 

[zkai2000]

Re: Image Processing

lol.. Didnt really notice about that..

I'll try to get the function done!
thanks CMOS!!

 

[troops]

Re: Image Processing

Hi

Visit this site for "Advanced Image Processing" lecture notes on

DCT and WAVELET Image compression
JPEG 2000 COMPRESSION
IMAGE INTERPOLATION
FINGERPRINT MATCHING
FACE DETECTION/RECOGNITION

h**p://www.csee.wvu.edu/%7Exinl/courses/ee591b/index.html

this link can't find ... did u have another link ...
i need some info about this .....

 

[ali]

Image Processing

Dear zkai2000
I'm realy belive that VC++ and other Normal Programming Languges(for me Delphi) are more powerfull than matlab and you can only with them find out the real performance of your algorithms.
are agree with me??
Best.
Ali

 

[Dabbah]

Image Processing

Hello guys,

Could someone tell me how to find the orientation field of a Fingerprint Image using Matlab ?!

Thanks.

 

[zkai2000]

Re: Image Processing

hmm...u're doing fingerprint recognition? welcome to the world! haha..

im using VC++..i personally do not think Matlab can do that...1st, the tolerence for matching the fingerprints are fixed. 2nd, it's not easy to apply the orientation algorithms.. that's wat i heard about using Matlab...

 

[zkai2000]

Re: Image Processing

by the way, u tried using other programmes to do the orientation part?
wanna share some ideas? 8)

 

[Krutarthbhatt]

Re: Image Processing

Hello Dabbah

Can you explain in more detail what u want to do in finger printing ? I think I can help you.

Regards

Krutarth

 

[Dabbah]

Image Processing

hii guys,

Thx for your care , i appreciate that.

as for sharing the ideas , that will great. and about what iam goinh to do in the fingerprint , iam trying to enhance the fingerprint image using the orienation of the pixels. but i do not know how. and would not mange without finding at least the orientation first.