F.A.Q. This section is created so you can find some common queries about the Purdue RVL SPEC-DB, our lab and other links. Please contact Jae Byung Park if you have any other questions. How do I contact you or your laboratory? What do I need to know before I use any images from your database? How do I obtain copies of your publications? How can I download images from your database? How can I find more information about your laboratory (RVL)? How the human-provided groundtruth has been established?