adding custom columns to image librarys in image content type

Hello friends,

i have requirement for images library documents,when click on the Image content type I need to extra columns to display.I need to add some additional columns for that for Image librarys in when user want publish the Image content type.

I need to delete the other user content like video and Audio for image librarys

Please provide me high level of implementation.

Thanks for advance

---

hk