Image Signal Processor (ISP) - definition
An important part of the smartphone camera experience is the Image Signal Processor (ISP), this is part of the silicon within a smartphones chip-set/CPU.
In conjunction with the phone's software and OS provides additional enhancements and special effects when both capturing images and to the pictures once captured. These include face detection, filters, panoramic scene capturing and object identification.
Images are also geo-tagged with the GPS coordinates of where the image was captured if the phone has an internal GPS chipset.