A control apparatus that generates a control signal for controlling a robot arm that performs a process on an object, a first imaging apparatus that outputs first image data, and a second imaging apparatus that outputs second image data are mounted. The control apparatus: generates first information indicating a position and a pose of the object by using the first image data generated by the first imaging apparatus; generates second information indicating a position and a pose of the object by using three-dimensional position data, which is generated from the second image data generated by the second imaging apparatus imaging the object and which indicates a three-dimensional position of each of a plurality of points of the object, and three-dimensional model data of the object having a position and a pose that are determined based on the first information; and generates the control signal based on the second information.