Image classification method, computer device and medium

An image classification method, comprising:

• acquiring a target to be classified contained in the image to be classified;
• extracting a low-level feature of the target to be classified contained in the image to be classified;
• acquiring a middle-level semantic feature of an image to be classified according to the low-level feature through a visual dictionary;
• and
• classifying the image to be classified according to the middle-level semantic feature of the image to be classified using a classification model based on middle-level semantic features
• wherein the low-level feature comprises geometric shapes, textures, local invariant features, and transform domain features, and the middle-level semantic feature comprises a bag of visual words and a semantic topic.