The invention discloses a fine-grained scene level sketch-based image retrieval method and system, belongs to the field of computer vision, and aims to solve the problem that most of existing sketch-based image retrieval methods are oriented to single-object and category-level image retrieval, and expand the application of sketch retrieval in actual life. An attention mechanism is introduced to establish a self-adaptive graph convolutional neural network, a sketch is matched with a to-be-retrieved image by using a triple network, a scene sketch and the to-be-retrieved image are modeled in three levels of global layout, category level and instance level of a scene, and information of each level is integrated to realize accurate matching of the input scene sketch and the image.
Fine-grained scene level sketch-based image retrieval method and system