Abstract: An infrared thermography system is provided which includes an infrared camera in which raster scanning is accomplished in parallel using an oscillating mirror and scanned lines of the field of view are projected onto a detection matrix including m detectors oriented in the raster direction. The signal processor receives an analog signal output of the camera and provides sequential analog signals to a display unit which displays a representation of the field of view. The system includes digital enlargement circuitry which enables an enlarged view of a portion of the field of view which contains an object of particular interest to be viewed on the display unit. The enlargement circuit controls the raster scanner to scan at a slow scan rate by causing time successive scanned lines of the field of view to be projected on the detection matrix in overlapped relationship.