An image processing apparatus includes an image capturing section, a marker-image defecting section, a judging section and an output section. The image capturing section captures at least a part of a target image, which includes a plurality of marker images and a recognition target range defined by the plurality of marker images, to acquire a captured image. The marker-image detecting section detects the marker images from the captured image. The judging section judges based on a detection result, whether or not the recognition target range is included in the captured image. When the judging section judges that the recognition target range is not included in the captured image, the output section outputs guidance for capturing the recognition target range.