A contact-free method of determining biometric parameters and physiological parameters of a subject of interest to be examined by a medical imaging modality , the medical imaging device comprising an examination space for arranging the subject of interest within for examination purposes, and an examination table having an upper surface for supporting the subject of interest prior and after the examination outside the examination space as well as while being arranged inside the examination space during examination, the method comprising steps of - prior to arranging the subject of interest within the examination space, taking at least one picture with a first digital camera , wherein the field of view of the first digital camera includes a total view of the upper surface of the examination table , - applying at least one out of a computer vision algorithm and an image processing algorithm to the at least one picture taken by the first digital camera for determining at least one biometric parameter of the subject of interest in relation to the upper surface of the examination table , - taking at least one picture by a second digital camera , whose field of view includes a region of the subject of interest that is related to the at least one determined biometric parameter, - using data that are at least indicative of the at least one determined biometric parameter of the subject of interest to identify a subset of pixels of the at least one picture taken by the second digital camera that define a region of interest from which at least one physiological parameter of the subject of interest is to be determined, - taking a plurality of pictures of the region of the subject of interest with the second digital camera , and - applying at least one out of a computer vision algorithm and an image processing algorithm to pictures of the plurality of pictures taken by the second digital camera for calculating the region of interest in pictures of the plurality of pictures for determining the at least one physiological parameter of the subject of interest during examination. - prior to arranging the subject of interest within the examination space, taking at least one picture with a first digital camera , wherein the field of view of the first digital camera includes a total view of the upper surface of the examination table , - applying at least one out of a computer vision algorithm and an image processing algorithm to the at least one picture taken by the first digital camera for determining at least one biometric parameter of the subject of interest in relation to the upper surface of the examination table , - taking at least one picture by a second digital camera , whose field of view includes a region of the subject of interest that is related to the at least one determined biometric parameter, - using data that are at least indicative of the at least one determined biometric parameter of the subject of interest to identify a subset of pixels of the at least one picture taken by the second digital camera that define a region of interest from which at least one physiological parameter of the subject of interest is to be determined, - taking a plurality of pictures of the region of the subject of interest with the second digital camera , and - applying at least one out of a computer vision algorithm and an image processing algorithm to pictures of the plurality of pictures taken by the second digital camera for calculating the region of interest in pictures of the plurality of pictures for determining the at least one physiological parameter of the subject of interest during examination. <EOS>