Abstract: Provided are a method and system for noncontact vision-based 3D cognitive fatigue measuring. The method comprises: acquiring pupil images of a subject exposed to visual stimuli; extracting a task evoked pupillary response (TEPR) by using the pupil images; detecting dominant peaks from the TEPR; calculating latency of dominant peaks; and determining cognitive fatigue of the subject by comparing a value of the latency to a predetermined reference value.

Abstract: A Method of producing a realistic virtual avatar by using a change in a pupil size according to heartbeats. The method tracks and records, in real time, a change in a pupil size of the actual user according to heartbeats of the actual user and applies the same to an eye model of a virtual avatar so as to synchronize the pupil size of the eye model with the pupil size of the actual user.

Abstract: A method of extracting heart information from a body micro-movement is provided. The method includes a face tracking step, a frame difference averaging step, smoothing filtering step, and a sliding peak detection step.

Abstract: A white noise generating apparatus for stress relaxation and concentration improvement includes: a headset including a microphone for outputting the voice to a communication line, a sound outputting unit for outputting the voice inputted from the communication line, and a sensing unit which is capable of sensing at least one of a pulse wave, a skin current, a skin temperature, and a white noise generator including a stress calculating unit for calculating a stress index from the voice outputted from the microphone, a white noise generating unit for generating white noise and outputting same to the sound output unit, and a control unit for controlling the white noise generating unit to output white noise sound according to the stress index calculated from the stress calculating unit so that the stress level may be normal.

Abstract: A social intimacy determining method includes detecting electrocardiogram (ECG) data from at least two subjects; detecting heart rhythm pattern (HRP) data from ECG signals of the two subjects; and determining a relationship (intimacy) between the two subjects by comparing the FIRP data of the two subjects.

Abstract: A method for determining a social relationship includes detecting electrocardiogram (ECG) data from at least two subjects, detecting heart rhythm coherence (HRC) data from the ECG signals of the two subjects, and determining a relationship (intimacy) between the two subjects by comparing the HRC data of the two subjects.

Abstract: An apparatus and a method for determining a drowsy state include an information acquirer acquiring physiological information of a user, a mode determiner setting an operation mode among modes categorized according to variable applied to determine a drowsy state of the user. A threshold determiner sets a threshold for an application variable of the set mode based on data in a reference table stored in database (DB). A physiological index calculator calculates a measurement value for each of the application variables based on state information of the user acquired in real time from the information acquirer. A state determiner determines the drowsy state of the user by comparing a user table generated from the measurement value calculated for each of the application variables with the reference table.