1. A method for generating a composite infrared image, comprising: receiving image data corresponding to a plurality of infrared images, wherein each of the infrared images corresponds to a subset portion of a geographical feature, such that joining the plurality of infrared images forms a composite infrared image of the geographical feature; determining a global contrast range for the composite infrared image with a global minimum contrast value corresponding to a minimum infrared intensity value of the plurality of infrared images and a global maximum contrast value corresponding to a maximum infrared intensity of the plurality of infrared images; mapping a contrast level of at least one of the plurality of infrared images based on the determined global contrast range for the composite infrared image; and generating a composite infrared image of the geographical feature based on the plurality of mapped images that retains distinguishable intensity variations for each of the infrared images used for the composite image.