Temperature maps measurements on 3D surfaces with infrared thermography Articles uri icon


publication date

  • February 2012

start page

  • 375

end page

  • 385


  • 2


  • 52

International Standard Serial Number (ISSN)

  • 0723-4864

Electronic International Standard Serial Number (EISSN)

  • 1432-1114


  • The use of the infrared camera as a temperature transducer in wind tunnel applications is convenient and widespread. Nevertheless, the infrared data are available in the form of 2D images while the observed surfaces are often not planar and the reconstruction of temperature maps over them is a critical task. In this work, after recalling the principles of IR thermography, a methodology to rebuild temperature maps on the surfaces of 3D object is proposed. In particular, an optical calibration is applied to the IR camera by means of a novel target plate with control points. The proposed procedure takes also into account the directional emissivity by estimating the viewing angle. All the needed steps are described and analyzed. The advantages given by the proposed method are shown with an experiment in a hypersonic wind tunnel.


  • 2d images; 3d object; 3d surface; control point; critical tasks; directional emissivity; infra-red cameras; infrared data; ir camera; ir thermography; optical calibration; target plates; temperature maps; temperature transducers; viewing angle