Abstract: A method of monitoring hand washing by individuals comprises monitoring the movements of individuals in an area using one or more sensors, identifying the performance of an act by an individual that requires the hands of the individual to be washed and determining whether the hands of the individual are washed after the performance of the act, wherein the determining includes tracking the motion of that individual using the one or more sensors. Sensors comprising arrays of thermal detectors are preferred, but other types of sensor could be included.

Abstract: A system and method of identifying changes in behavior of a human subject comprises monitoring the movements of the subject within a space using one or more sensors, processing signals from the sensor(s) to determine values for one or more parameters associated with one or more patterns of behavior of the subject, using values for the one or more parameters accumulated over a period of time to establish one or more models of a typical pattern of behavior for the subject, monitoring the ongoing behavior of the subject to obtain current values for one or more of the parameters; and using the current values and the model(s) of a typical pattern of behavior to identify atypical behavior of the subject. An alert may be generated if the current value of one or more of the parameters is outside the acceptable limit(s). Advantageously low resolution thermal imagers are used so as to minimise intrusiveness and invasion of privacy.

Abstract: A method of monitoring hand washing by individuals comprises monitoring the movements of individuals in an area using one or more sensors, identifying the performance of an act by an individual that requires the hands of the individual to be washed and determining whether the hands of the individual are washed after the performance of the act, wherein the determining includes tracking the motion of that individual using the one or more sensors. Sensors comprising arrays of thermal detectors are preferred, but other types of sensor could be included.

Abstract: A method of identifying the presence of turbulence in fluids, e.g. for distinguishing flames from other hot bodies, examines the correlation between adjacent pixels of an array viewing the fluid and particularly the proportion of negative correlation in the presence of strong positive correlation.

Abstract: A method of identifying the presence of turbulence in fluids, e.g. for distinguishing flames from other hot bodies, examines the correlation between adjacent pixels of an array viewing the fluid and particularly the proportion of negative correlation in the presence of strong positive correlation.