recomendations

Good reference book for digital image processing?

I am learning digital image processing on my own and would like recomendations on good reference books. If you know of books to definately stay away from that would be useful as well. Thanks ...

How much PHP do I need to know to design wordpress themes

So I want to start developing Wordpress themes, but I don't know PHP. How much knowledge should I have of PHP before I begin Wordpress development? Can anyone recommend any PHP books? ...

HTML - Recomnended href link sytanx

we can give the href like the following <a href="images\image.png"> <a href="images/image.png"> <a href=".\images\image.png"> <a href="./images/image.png"> which is the recommended method... which doesnot have problem on any browser and on any web server.... leave the image type... consider the link\paths and PLEASE explain why t...