Introduced in 1930, photoplethysmography techniques presented the possibility of measuring SpO2 and HR using the absorption of light by the blood to define these signals In recent years, a new approach to photoplethysmography to measure physiological parameters without contact has been developed. This technique, called remote Photoplethysmography Imaging (rPPG), uses the different Red - Green - Blue color spectra at a skin captured by the camera video to determine a plethysmography signal.

Although these systems have been technically valid, they have not been clinically evaluated in a health setting. This clinical trial is to assess parameters measurements by rPPG compared standard acquisition system in real conditions

Inclusion Criteria:

• Patients requiring a Pulmonary function testing.

Exclusion Criteria:

• Patients with stable clinical status.
• Pregnant woman or Woman of childbearing potential without effective contraception