An imaging system includes a light source to emit a plurality of wavelengths of light, and a camera coupled to receive the light reflected back from tissue in a body. Also included are a database with reflectance data for a plurality of tissue types, and a controller coupled to the light source, the database, and the camera. The controller causes the imaging system to perform operations, including: generating image data with the camera； receiving the image data from the camera with the controller； comparing, with the controller, the image data to the reflectance data in the database； and determining a tissue type in the image data in response to comparing the image data to the reflectance data.
