Writting watermark to image.

Hello,

I am trying to figure out how to write a watermark text on an image I load. Would a simple textout do the job? I don't have experience in manipulating pixel data, so can somebody help me?

Thanks a lot

eh, using the plain old adding text to an image isnt going to do it for copyright, what you are looking for is steganography, where you actually plant data INTO the image , such as a copyright notice, instructions for a nuclear bomb,etc.

Adobe Photoshop (if you have it 'cause it costs a fortune) has the feature to add watermark.

I don't care about adobe, I need to make a program so that it can take all pictures in a directory and add a specific watermark on 0,0 at the image, a string.

What sort of answer are you looking for?

Hard to imagine how you can write a program which doesn't involve pixel manipulation, but which does add a watermark to an image.

Unless you're hoping for some magical API call which does it all for you

Code:

---

void watermark( const char *filename, int x, int y, const char *text );
int main ( int argc, char *argv[] ) {
  watermark( argv[1], 0, 0, argv[2] );
}

---

Try GIMP (or free adobe). It has scripting facilities, so once you finally figure out what it is you want to do, then automating it would not be too difficult.

In fact, how about this

You'll need an image manipulation library. Depending on your OS/Compiler and the format of the images you may already have one capable of your needs. Otherwise, you can grab one from the web.

http://www.imagemagick.org/index.html?

http://www.boutell.com/gd/

http://www.radix.net/~cknudsen/Ilib/

http://www.google.com/search?q=image+library+c

http://directory.google.com/Top/Comp...ics/Libraries/

http://www.google.com/search?q=image...+site%3Asf.net

GDI+ (MSVC only)