Color is an important aspect of vision. However, most computer vision applications ignore color in their methods. This book addresses the use and application of color in the field of computer vision. First, the basics of color vision and the models that are used throughout the book are described. Then, photometric invariance, i.e. invariance to distruptiveimaging factors like shadow/shading and altering color of the light source, is discussed. After that, the detection and description of color image features is explained, and the book ends with some applications in which the use of color in computer vision is shown.