A method of presenting a visible representation of infrared radiation information onto an observed real world scene based on infrared radiation emitted from said observed real world scene, using a thermography arrangement comprising an infrared imaging system, a visible light imaging system and a visible light projecting system, the method comprising the steps of: - capturing infrared radiation information based on detected infrared radiation emitted from said observed real world scene according to a first field of view of said infrared imaging system; - creating a visible representation of said detected infrared radiation in the form of an infrared image representing different thermal properties of the observed real world scene; - projecting a visible light pattern onto said observed real world scene according to a second field of view of said visible light projecting system, said second field of view at least partially overlapping said first field of view; - capturing a visible light image of said observed real world scene, said scene comprising said projected visible light pattern, according to a third field of view of said visible light imaging system, said third field of view at least partially overlapping the first and/or the second field of view; - detecting said projected visible light pattern in said captured visible light image; - determining the pixel displacement ( d (pix vis)), in pixel coordinates in the visible light image, between the pixel coordinates of said detected visible light pattern and calculated pixel coordinates of said projected visible light pattern where the projected light pattern would appear if the visible light imaging system and the visible light projecting system were aligned, dependent on a predetermined relation between said visible light imaging light imaging system and said visible light projecting system; - determining the pixel displacement d (pix IR), in pixel coordinates in the infrared image, between the infrared image and the visible light image, based on said pixel displacement d (pix vis) between the detected projected visible light pattern and the visible light image, dependent on a predetermined relation between said infrared imaging system and said visible light projecting system; - aligning said infrared image to the detected infrared radiation emitted from said observed real world scene, based on said pixel displacement d (pix IR); and - presenting said aligned infrared image by projecting it onto said real world scene according to the second field of view in alignment with the detected IR radiation emitted from the observed real world scene. - capturing infrared radiation information based on detected infrared radiation emitted from said observed real world scene according to a first field of view of said infrared imaging system; - creating a visible representation of said detected infrared radiation in the form of an infrared image representing different thermal properties of the observed real world scene; - projecting a visible light pattern onto said observed real world scene according to a second field of view of said visible light projecting system, said second field of view at least partially overlapping said first field of view; - capturing a visible light image of said observed real world scene, said scene comprising said projected visible light pattern, according to a third field of view of said visible light imaging system, said third field of view at least partially overlapping the first and/or the second field of view; - detecting said projected visible light pattern in said captured visible light image; - determining the pixel displacement ( d (pix vis)), in pixel coordinates in the visible light image, between the pixel coordinates of said detected visible light pattern and calculated pixel coordinates of said projected visible light pattern where the projected light pattern would appear if the visible light imaging system and the visible light projecting system were aligned, dependent on a predetermined relation between said visible light imaging light imaging system and said visible light projecting system; - determining the pixel displacement d (pix IR), in pixel coordinates in the infrared image, between the infrared image and the visible light image, based on said pixel displacement d (pix vis) between the detected projected visible light pattern and the visible light image, dependent on a predetermined relation between said infrared imaging system and said visible light projecting system; - aligning said infrared image to the detected infrared radiation emitted from said observed real world scene, based on said pixel displacement d (pix IR); and - presenting said aligned infrared image by projecting it onto said real world scene according to the second field of view in alignment with the detected IR radiation emitted from the observed real world scene.