Disclosed herein is an endoscope. The endoscope includes a light source； an optical fiber having a light entrance portion and a light exit portion such that light containing image information on a site irradiated with light from the light source enters through the light entrance portion and light passing through the optical fiber exits through the light exit portion； and an image acquisition device acquiring the image information, wherein the image acquisition device includes: an image sensor acquiring information of light passing through the optical fiber； a transmission matrix storage unit previously storing a transmission matrix indicating a transmission state of various light components entering the light entrance portion； and an image recovery unit recovering the image information from the information of light acquired by the image sensor through compressed sensing using a sparse representation based on the transmission matrix.
