Image retrieval is a research field and computational process focused on searching for and retrieving digital images from large databases based on user queries. It investigates methodologies for indexing, organizing, and accessing visual information, often employing techniques that analyze image content (such as color, texture, shape, or semantic features), associated metadata, or hybrid approaches to enable relevant and efficient search results. Its significance lies in facilitating access to vast visual collections across diverse applications, including digital libraries, medical imaging, e-commerce, and surveillance.