It should be noted that since a game may be played for a plurality of rounds, the video streams may include video streams acquired from the plurality of views in each round. To distinguish each round, a plurality of image frames where the specific target object is continuously acquired is recognized as images of one round, and therefore, the first image frame in the plurality of image frames where the specific target object is detected is respectively obtained from the video stream of each view.

If the plurality of views includes a side view and a top view, and the side view includes a left side view of the game desktop and/or a right side view of the game desktop, in the video stream from each view, for example, the video stream from the right side view of the game desktop, the left side view of the game desktop, or the top view, the first image frame in the plurality of continuous image frames where the specific target object is detected is respectively determined. It may be assumed that the first image frame in the plurality of continuous image frames where the specific target object from the first view (such as the left side view of the game desktop) in a certain round is image a.

At step 103-2, a synchronous image acquired synchronously with the first image frame is determined in a video stream synchronously acquired from other view.