PROBLEM TO BE SOLVED: To provide an endoscope system and an endoscope system driving method, which are easy to use in observation, diagnosis, or the like.SOLUTION: An endoscope system 10 comprises an endoscope 12, an image acquisition part 97, an aberration connection part 705, and a monitor 18. The endoscope 12 includes: an insertion part 12a to be inserted into an observation object； a direct view observation part 41 having a field of view in a distal end direction of the insertion part 12a； a side view observation part 42 having a field of view in a side surface direction of the insertion part 12a； and a second protrusion part 32 that protrudes from the insertion part 12a and forms a blind angle in the field of view of the side view observation part 42. The image acquisition part 97 acquires a direct view observation image 111 using the direct view observation part 41 and acquires a side view observation image 112 using the side view observation part 42. The aberration connection part 705 converts at least one of the direct view observation image 111 and the side view observation image 112 into an image to which aberration can be favorably connected. The monitor 18 is a display part that displays the direct view observation image 111 and the side view observation image 112 brought into states in which the aberration can be favorably connected to the images.SELECTED DRAWING: Figure 40COPYRIGHT: (C)2020,JPO&INPIT【課題】観察または診断等において使用しやすい内視鏡システム及び内視鏡システムの駆動方法を提供する。【解決手段】内視鏡システム１０は、観察対象に挿入する挿入部１２ａと、挿入部１２ａの先端方向に視野を有する直視観察部４１と、挿入部１２ａの側面方向に視野を有する側視観察部４２と、挿入部１２ａから突出し、側視観察部４２の視野に死角を形成する第２突出部３２と、を有する内視鏡１２と、直視観察部４１を用いて直視観察画像１１１を取得し、かつ、側視観察部４２を用いて側視観察画像１１２を取得する画像取得部９７と、直視観察画像１１１または側視観察画像１１２の少なくともいずれか一方に変換処理を施して、収差を良好に接続し得る画像に変換する収差接続部７０５と、収差を良好に接続し得る状態となった直視観察画像１１１及び側視観察画像１１２を表示する表示部であるモニタ１８と、を備える。【選択図】図４０
