The present invention relates to a device and a method for extracting physiological information from remotely detected electromagnetic radiation (15) emitted or reflected by a subject. A data stream (24) derived from detected electromagnetic radiation (14) is received, the data stream (24) comprising a sequence (102) of signal samples (104) representing a region of interest (58; 108) exhibiting a continuous or discrete characteristic signal (128) including physiological information indicative of at least one at least partially periodic vital signal (20; 138, 142). The sequence (102) of signal samples (104) is selectively partitioned into at least two distinct sub-sequences (116a, 116b, 116c, 116d) of defined signal subsets (66, 84) representing spatial sub-regions of the region of interest (58; 108). Each of a plurality of the at least two distinct sub-sequences (116a, 116b, 116c, 116d) is processed and thereby a plurality of distinct indicative characteristic sub-signals (74a, 74b, 74c, 74d; 122) is extracted, wherein each of the at least two distinct indicative characteristic sub-signals (74a, 74b, 74c, 74d; 122) is extracted from a respective distinct sub-sequence (116a, 116b, 116c, 116d). Consequently, an enhanced characteristic signal (72; 135) is generated by combining the extracted characteristic sub-signals (74a, 74b, 74c, 74d; 122).La présente invention concerne un dispositif et un procédé d'extraction d'informations physiologiques d'un rayonnement (15) électromagnétique détecté de manière à distance émis ou réfléchi par un sujet. Un courant de données (24) déduit d'un rayonnement (14) électromagnétique détecté est reçu, le courant de données (24) comprenant une séquence (102) d'échantillons de signal (104) représentant une région d'intérêt (58 ; 108) présentant un signal caractéristique continu ou discret (128) comprenant des informations physiologiques indicatives d'au moins un signal vital au moins partiellement périodique (20 ; 138, 142). La séquence (1