Abstract: A robot system includes: a touchscreen panel; and an image processing apparatus configured to recognize a workpiece in an image of the workpiece acquired by photography, in accordance with a registered image recognition program. The image processing apparatus includes: a storage unit configured to store a base program serving as the image recognition program by inputting a plurality of parameters regarding the workpiece, a workpiece registration guiding portion configured to display an input screen to prompt input of the parameters on the touchscreen panel and acquire the parameters via the touchscreen panel, and a registration portion configured to build and register the image recognition program by applying the parameters acquired by the workpiece registration guiding portion to the base program in the storage unit.