A device for generating thermal images includes a low resolution infrared (IR) sensor supported within a housing and having a field of view. The IR sensor is configured to generate thermal images of objects within the field of view having a first resolution. A spatial information sensor supported within the housing is configured to determine a position for each of the thermal images generated by the IR sensor. A processing unit supported within the housing is configured to receive the thermal images and to combine the thermal images based on the determined positions of the thermal images to produce a combined thermal image having a second resolution that is greater than the first resolution.