Image classification is the task of labelling the whole image with an object or concept with confidence. The applications include gender classification given an image of a person's face, identifying the type of pet, tagging photos, and so on. The following is an output of such a classification task:
The Chapter 2, Image Classification, covers in detail the methods that can be used for classification tasks and in Chapter 3, Image Retrieval, we use the classification models for visualization of deep learning models and retrieve similar images.