摘要:
It is made possible to determine a speech discrimination ability of a user width a high precision. From an electroencephalogram signal of a user, a speech discrimination ability determination system acquires: an event-related potential based on a point of outputting a first speech sound being output with a first occurrence frequency as a starting point; an event-related potential based on a point of outputting the first speech sound being output with a second occurrence frequency as a starting point; an event-related potential based on a point of outputting a second speech sound being output with the first occurrence frequency as a starting point; and an event-related potential based on a point of outputting the second speech sound being output with the second occurrence frequency as a starting point. With respect to each of the first and second speech sounds, an MMN determination section acquires 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.
摘要:
A distance measurement system comprises multiple distance measurement devices, including a LiDAR sensor and at least one other distance measurement device, and a storage device storing three-dimensional point cloud data based on distance measurement data acquired by each of the multiple distance measurement devices. The LiDAR sensor comprises a light-emitting device that can change an emission direction of a light beam, a light-receiving device that detects reflected light from the light beam and outputs a signal indicating a detection result, and a processing circuit that controls the light-emitting device and the light-receiving device to generate the distance measurement data on a basis of the signal outputted from the light-receiving device. The processing circuit references the point cloud data to determine at least one empty area in the point cloud data, and measures distance in the empty area by causing the light-emitting device to emit the light beam toward the empty area.
摘要:
This invention solves the problem that objects in the field of view of reading glasses using multifocal lenses for correcting ocular refractive errors such as presbyopia appear distorted. This image display device (3) is provided with the following: a distance computation unit (101') that computes the distance to a subject in a field-of-view image; a visual-acuity-information acquisition unit (103) that stores visual-acuity information for the user in advance; a corrected-image generation unit (105) that generates and outputs a corrected image on the basis of the field-of-view image and an eye image generated from the field-of-view image, the distance information, and the visual-acuity information; and a display unit (120) that displays the corrected image by superimposing same onto the user's field of view. Since the corrected image is superimposed without the use of lenses, lenses being the cause of the abovementioned distortion, the user can see close objects clearly.
摘要:
A sensing device comprises a light source, a light-receiving device comprising at least one light-receiving element that performs photoelectric conversion, and a processing circuit that controls the light source and the light-receiving device. The processing circuit causes the light source to emit light to a scene at least once, causes the light-receiving device to receive reflected light in each of a plurality of exposure periods, the reflected light being resulting from the emitted light, generates, based on received-light data from the light-receiving device, luminance data that indicates distributions of amounts of reflected light corresponding to the respective exposure periods and that are used for generating distance data for the scene, and outputs the luminance data and timing data indicating timings of the respective exposure periods.
摘要:
A ranging apparatus includes a light emitting apparatus, a light receiving apparatus, and a processing circuit that controls the light emitting apparatus and the light receiving apparatus and that processes a signal outputted from the light receiving apparatus. The processing circuit causes the light emitting apparatus to emit first light that illuminates a first range in a scene, causes the light receiving apparatus to detect first reflected light produced by illumination with the first light and output first detection data, determines, on the basis of the first detection data, one or more second ranges that are narrower than the first range, causes the light emitting apparatus to emit second light that illuminates the second ranges, causes the light receiving apparatus to detect second reflected light produced by illumination with the second light and output second detection data, and generates and outputs distance data on the second regions on the basis of the second detection data.
摘要:
An image display device includes: an eyeball angular velocity calculation unit that calculates an eyeball angular velocity of a viewer viewing an object by an equation: eyeball angular velocity = (2 arctan (s/2d))/t, using a movement distance moved by the object included in a moving image between two sequential frames on a screen, a time interval between the two sequential frames, and a viewing distance, a distance between the viewer and the screen; a determination unit that determines whether the calculated eyeball angular velocity is not less than a lower limit of an eyeball angular velocity in a saccadic eye movement; an image processor that (a) stops the moving image or replaces the moving image with a single color image when it is determined that the calculated eyeball angular velocity is not less than the lower limit, (b) does not stop the moving image and does not replace the moving image with the single color image when it is determined that the eyeball angular velocity is less than the lower limit.
摘要:
A distance measurement apparatus comprises a light emitter that emits light toward a scene, a light receiver that includes at least one light-receiving element and detects reflected light from the scene produced by the emission of light with the at least one light-receiving element, and a signal processing circuit that generates and outputs, for each frame, output data including measurement data indicating the positions or distances of a plurality of points in the scene on the basis of a signal outputted by the light receiver. The output data includes reference time data indicating a reference time determined for each frame and time difference data determined for each point, the time difference data indicating the difference from the reference time.