Processing images of at least one living being

摘要

A method of processing images of at least one living being, includes obtaining a sequence (19) of digital images taken at consecutive points in time. At least one measurement zone (26) comprising a plurality of image points is selected. For each measurement zone (26), a signal (28,30) representative of at least variations in a time-varying value of a combination of pixel values at at least a number of the image points for use in determining at least one of a presence and a frequency value of at least one peak in a spectrum of the signal (28,30) corresponding to a frequency of a periodic physiological phenomenon is obtained. The step (25) of selecting at least one measurement zone (26) includes analyzing information based on pixel data of a plurality of image parts in at least one of the images (19), each image part including at least one image point, and selecting each measurement zone (26) from contiguous parts determined to have similar characteristics.

主权项

1. A method of image processing of a scene with respect to at least one living being having at least one body part, comprising:
receiving a sequence of digital images representing the scene at successive points in time, each said digital image including a plurality of image parts, each image part including at least one image point, each image point having at least one pixel value; analyzing a plurality of image parts of at least one of the digital images so as to determine a set of contiguous image parts having similar characteristics; responsive to analyzing so as to determine a set of contiguous image parts, automatically selecting at least one measurement zone, the at least one measurement zone including one or more image points of at least one of said contiguous image parts; for at least one measurement zone, generating a signal representative of a time-varying average of the at least one pixel value of selected image points of the measurement zone; and determining at least one of a presence and a frequency value of at least one peak in a spectrum of the signal corresponding to a frequency of a periodic physiological phenomenon of a living being.