Interactive method and electronic device

A computer-implemented method, comprising:

• acquiring,
• at an acquisition module, a first image of a page from a photographic device, wherein the photographic device is in network communication with the acquisition module, the first image to be analyzed;
• recognizing the first image to be analyzed to obtain a recognition result;
• playing a narration audio file associated with the recognition result;
• playing a question audio file associated with the interactive content of the first image to be analyzed based on the recognition result after the narration audio file is played;
• acquiring, at the acquisition module, a second image of the page from the photographic device, the second image to be analyzed;
• determining whether a feature graphic exists in the second image to be analyzed;
• if the feature graphic exists in the second image to be analyzed, determining whether the feature graphic overlaps with an interactive region, wherein the interactive region is an area corresponding to an answer to the question in the question audio file, the steps comprising:
• extracting feature points in the second image to be analyzed;
• matching the feature points corresponding to the second image with comparison feature points of training image data to obtain a homography matrix, the training image data comprising images taken with no feature graphic present;
• projecting the feature graphic into the training image data corresponding to the second image to be analyzed using the homography matrix to determine a projection position of the feature graphic in the training image data;
• and
• determining whether the projection position is overlapped with a manually labeled interactive region on the training image data;
• playing a correct audio file if the feature graphic and the interactive region are overlapped;
• and
• playing a wrong audio file if the feature graphic and the interactive region are not overlapped.