remotely detected characteristic signal information extraction device, method of extracting information from remotely detected characteristic signals and computer program

摘要

Remotely Detected Characteristic Information Extracting Device, Method of Extracting Information from the Remotely Detected Characteristic Signals, and Computer Program The present invention relates to a device and method of extracting information from the characteristic signals detected remotely. a data stream (24) that may be derived from electromagnetic radiation (14) emitted or reflected by an object (12) is received. data stream (24) comprises a frame sequence (66, 70, 92, 94; 108, 110, 112, 122, 124; 164, 166, 168), at least some of the frames comprise a frame section (68). , 72; 174, 180, 186) representative of a region of interest (56) that can be assigned to object (12). region of interest (56) exhibits a continuous or discrete characteristic signal (136; 192) including physiological information (200) indicative of at least one at least partially periodic vital signal (20; 208). the frame sequence (66, 70, 92, 94; 108, 110, 112, 122, 124; 164, 166, 168) also comprises a disturbance signal portion at least partially indicative of unwanted object movement. the characteristic signal (136; 192) can be stabilized by deriving a derived signal form (78, 88, 98, 100, 102, 172, 176) from some frames of said frame sequence (66, 70, 92). 94, 108, 110, 112, 122, 124, 164, 166, 168) by downsizing. a change of position (74,178) of a present derived signal form (88, 98, 100, 102; 176) relative to a previous derived signal form (78,172) can be estimated. a present frame section (72; 180, 186) may be determined in consideration of the estimated position change (74, 178). thus, the region of interest 56 can be traced to at least partially compensate for unwanted object movement. therefore, the disturbance signal portion may be compensated at least partially. the characteristic signal (136; 192) may be extracted from the frame sequence (66, 70, 92, 94; 108, 110, 112, 122, 124; 164, 166, 168) in respect of a sequence of determined frame sections (68, 72; 174, 180, 186). 1/2