Abstract:
An uncomfortable sound pressure estimation system includes: a biological signal measurement section for measuring an electroencephalogram signal of a user; a sound stimulation output section for presenting a sound stimulation group to the user, the sound stimulation group including a first sound, a second sound, and a third sound which are pure tones of the same frequency and which consecutively decrease in sound pressure within a predetermined range; an extraction section for, from the electroencephalogram signal in a predetermined zone defined based on a point of presenting at least one of the second sound and the third sound as a starting point, extracting an N1-P2-amplitude related or wavelet-coefficient related characteristic amount of event-related potential of the electroencephalogram signal; and a determination section for determining an uncomfortable sound pressure at the frequency of the sound stimulation group based on the characteristic amount extracted by the extraction section.
Abstract:
An exemplary UCL estimation system including: an output section configured to present to a user a first sound, and a second sound after lapse of a first predetermined time from a point of presenting the first sound, the first sound having a sound pressure within a predetermined sound pressure range, and the second sound having a same sound pressure as that of the first sound; a measurement section configured to measure an electroencephalogram signal of the user; an extraction section configured to extract, from an electroencephalogram signal measured within a second predetermined time from a point of presenting the second sound, a characteristic amount of an event-related potential of the signal; and an estimation section configured to estimate, by referring to a predetermined relationship between characteristic amount values of event-related potential and uncomfortableness threshold values, an uncomfortableness threshold value corresponding to the extracted characteristic amount of the potential.
Abstract:
A people stream analysis apparatus includes an image information capturer that captures an external appearance image of a person, a person recognizer that recognizes the person from the external appearance image, a store inferrer that identifies from the external appearance image a possession carried by the person, and infers from the identified possession a store from which the possession has been obtained, a memory that stores, in an associated form, person information indicating the recognized person, store information indicating the inferred store, and time information indicating time at which the external appearance image has been captured, and an arrival store order determiner that determines an order of stores in which the person has visited, based on a change in a time sequence of listing of stores indicated by the store information stored on the memory.
Abstract:
A freshness estimation method includes obtaining an absorbance spectrum that is obtained by irradiating an eye of a fish with light having all or part of a wavelength band from 315 nm to 450 nm; and estimating freshness of the fish by using a shape of the obtained absorbance spectrum.
Abstract:
A biosignal measurement apparatus includes: a potential difference measurement unit that measures a potential difference between a plurality of electrodes of an electrode unit placed on a user's chest; an ECG analysis unit that obtains an electrocardiogram (ECG) indicating a temporal variation of a cardiac potential of the user, from the potential difference measured by the potential difference measurement unit; an impedance measurement switching unit that determines a start timing of a first period which is a period not including an R wave, using the ECG obtained by the ECG analysis unit; an impedance measurement unit that measures an impedance between the plurality of electrodes in the first period; and a respiratory calculation unit that calculates respiratory information related to respiration of the user, based on a temporal variation of the impedance measured by the impedance measurement unit.
Abstract:
A master-slave device grips an object and performs a task while being in contact with a to-be-treated object. A force detection unit measures force information given to a slave mechanism. A force correction determination unit determines a force correction part serving as information from correction start to end times of force information transmitted to a master mechanism and, as a correcting method to perform correction, a first method determining a gain such that a reduction in absolute value of force information at the force correction part is maintained for a predetermined period of time or a second method determining a gain such that a reduction and an increase in the absolute value are repeated within a range that is not more than a value by reducing the absolute value. A force correction unit corrects information of a type of a force based on the force correction part and the gain.
Abstract:
A three-dimensional (3D) video display apparatus includes: a viewing action detecting unit which detects whether or not a viewing state of a user who views a plurality of 3D video display screens with a viewing target being changed between the 3D video display screens has changed a predetermined number of times or more in a predetermined time period; and a control unit which restricts user's viewing action of viewing a 3D video image displayed by an image display unit when the viewing action detecting unit detects that the viewing state of the user has changed the predetermined number of times or more in the predetermined time period.
Abstract:
In a speech discrimination ability determination system, an MMN determination section acquires, with respect to each of the first and second speech sounds, difference information between the event-related potential acquired during its output with the first occurrence frequency and the event-related potential acquired during its output with the second occurrence frequency, and determines whether a negative component exists in the difference information in predetermined time ranges after the first and second speech sounds are output. When the determination result indicates that the negative component exists, a discrimination ability determination section determines that the user discriminates the first and second speech sounds.
Abstract:
Provided is a three-dimensional image display system including: eyeglasses including a type information transmission unit which transmits type information of the eyeglasses and a potential information transmission unit which transmits a biopotential of a viewer as potential information; and a three-dimensional display TV including a type information reception unit which receives the type information, an electrode position determination unit which determines, based on the received type information, a position of an electrode included in the eyeglasses, a potential information reception unit which receives the transmitted potential information, and a wearing conditions determination unit which determines wearing conditions of the viewer wearing the eyeglasses, based on the determined electrode position and the received potential information.
Abstract:
A visual fatigue level measuring device includes: a video presenting unit which presents 3D video; a test period determining unit which determines two or more time periods each of which is for a test for measuring a level of visual fatigue; an eye movement obtaining unit which obtains data indicating eye movements of left and right eyes of a player with respect to the presented video; an eye movement extracting unit which extracts, from the obtained eye movement data, eye movement data in each of the two or more time periods determined by the test period determining unit; an eye movement comparing unit which compares eye movements in the two or more time periods based on the extracted data; and a fatigue level determining unit which determines the level of visual fatigue of the player based on the comparison result.