Infrared thermographic system and associated method

An infrared thermographic system configured to measure the temperature of an object, comprising:

• a thermal infrared image sensor arranged to collect infrared radiation and construct at least one image based on this radiation;
• a drive support arranged to drive the thermal infrared image sensor in rotation about an axis of rotation, the thermal infrared image sensor being fastened on the drive support such that, during a rotation of the drive support, the thermal infrared image sensor images different distinct areas surrounding the infrared thermographic system, the thermal infrared image sensor being arranged to acquire several distinct images such that combining these different images forms a continuous panorama of at least 180 degrees about the axis of rotation of the drive support;
• a processing module arranged and/or programmed to measure a temperature of said object based on the images acquired by the thermal infrared image sensor;
• a near-field infrared reference source called non-uniformity correction source, the drive support being arranged to drive the thermal infrared image sensor in rotation about an axis of rotation, the thermal infrared image sensor being fastened on the drive support such that at least one of the distinct images of each panorama images the non-uniformity correction source, the processing module being arranged and/or programmed to correct a spatial non-uniformity of the acquired images as a function of the non-uniformity correction source;
• and the non-uniformity correction source is situated at a distance from the thermal infrared image sensor such that at least one acquired image, called reference image, images only the non-uniformity correction source;
• and
• the near-field infrared reference source is close enough to the thermal infrared image sensor to be situated outside a depth of field of the optical system optically connecting the source to the thermal infrared image sensor, such that, for at least one position of the drive support, the thermal infrared image sensor in the focal plane of the optical system is arranged to intercept only light radiation originating from the source in a focal plane of the optical system optically connecting the source to the thermal infrared image sensor.