A data processing computer-implemented method comprising: obtaining information identifying a position of an object in a scene at a time during a sporting event; obtaining an image of the scene captured at the time during the sporting event; projecting the position of the object in the scene onto an image plane of the image; and outputting information based on the projection; wherein the method comprises: obtaining information indicating a visual characteristic of the object which distinguishes it from one or more other objects in the scene; and determining if the object is in the image using the visual characteristic of the object; and characterized in that determining if the object is in the image comprises: projecting the position of the object in the scene onto a plurality of candidate image planes of the image, and for each candidate image plane, determining if a portion of the image at the projected position of the object has the visual characteristic of the object; and determining the object is in the image if, for one candidate image plane, the portion of the image at the projected position of the object has the visual characteristic of the object, wherein the one candidate image plane is determined as the image plane of the image. obtaining information identifying a position of an object in a scene at a time during a sporting event; obtaining an image of the scene captured at the time during the sporting event; projecting the position of the object in the scene onto an image plane of the image; and outputting information based on the projection; wherein the method comprises: obtaining information indicating a visual characteristic of the object which distinguishes it from one or more other objects in the scene; and determining if the object is in the image using the visual characteristic of the object; and characterized in that determining if the object is in the image comprises: projecting the position of the object in the scene onto a plurality of candidate image planes of the image, and for each candidate image plane, determining if a portion of the image at the projected position of the object has the visual characteristic of the object; and determining the object is in the image if, for one candidate image plane, the portion of the image at the projected position of the object has the visual characteristic of the object, wherein the one candidate image plane is determined as the image plane of the image. obtaining information indicating a visual characteristic of the object which distinguishes it from one or more other objects in the scene; and determining if the object is in the image using the visual characteristic of the object; and characterized in that determining if the object is in the image comprises: projecting the position of the object in the scene onto a plurality of candidate image planes of the image, and for each candidate image plane, determining if a portion of the image at the projected position of the object has the visual characteristic of the object; and determining the object is in the image if, for one candidate image plane, the portion of the image at the projected position of the object has the visual characteristic of the object, wherein the one candidate image plane is determined as the image plane of the image. projecting the position of the object in the scene onto a plurality of candidate image planes of the image, and for each candidate image plane, determining if a portion of the image at the projected position of the object has the visual characteristic of the object; and determining the object is in the image if, for one candidate image plane, the portion of the image at the projected position of the object has the visual characteristic of the object, wherein the one candidate image plane is determined as the image plane of the image.