EP0 is control endpoint. Why do you want to transfer the image data through EP0?
Please add more information on what you're trying to achieve so that we can understand the requirement better.
My question is how to get image data. Is any sample code or document to describe it ?
"USBVideoClassBulk" and "USBVideoClass" example projects should give you an idea on UVC class.
"SlaveFifoAsync" example project should give you an idea on transfering the data on GPIF side to USB side.