# What is spectral analysis? Spectral analysis is a form of image processing that extracts useful information from remote sensing imagery that would might otherwise be missed from the raw pixel values alone. You may see it referred to as spectral imaging or spectral image processing. This form of image processing is usually applied to detect features, identify patterns and derive greater insight into the data. This guide will focus on the application of spectral analysis to visible and near-infrared imagery from sensors on satellite and drone platforms. ![Credit:](https://images.unsplash.com/photo-1446776811953-b23d57bd21aa?crop=entropy\&cs=tinysrgb\&fm=jpg\&ixid=MnwxOTcwMjR8MHwxfHNlYXJjaHwzfHxzYXRlbGxpdGV8ZW58MHx8fHwxNjU1OTk3OTE0\&ixlib=rb-1.2.1\&q=80) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://guides.geospatial.bas.ac.uk/spectral-analysis-of-imagery/what-is-spectral-analysis.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.