Starting from the basic principle of information fusion, this paper discusses the research status of heterogeneous image fusion structure, feature-level fusion algorithm and decision-level fusion algorithm in detail. The creation of non-fiction gives the audience the highest prestige, and the real thing has great power, which subtly leaves a thought in the heart of the audience. From the theoretical perspective of "cultural space" and "third space", taking intangible cultural heritage documentaries as the object, it analyzes the reconstruction of intangible cultural heritage cultural space in the context of new media and the expansion of intangible cultural heritage-mediated survival, and the template matching of similarity The method realizes the automatic registration of visible light and infrared images containing airport scenes.