1. An image processing apparatus, comprising: a hardware circuit configured to: detect an object in an input image, output a first detection result based on the detected object; a signal processing circuit configured to process an input image signal based on an object detection operation that detects the object in the input image; and a controller configured to: control the hardware circuit to detect the object in a first frame of the input image, and control the signal processing circuit to detect the object in a second frame of the input image based on the first detection result, wherein the object is detected by the signal processing circuit based on the first detection result, wherein the second frame is delayed by at least one frame from the first frame, and wherein the first frame and the second frame are from a same camera.