A gaze detection apparatus performs a calibration operation including displaying a target image in multiple positions on a display screen sequentially, setting, in the display screen, corresponding areas corresponding to the target images displayed on the display screen sequentially, and calculating positional data of points of regard in display periods in which the respective target images are displayed; and determines, with respect to each of the target images, whether the positional data of the point of regard that is calculated in the calibration operation is present within the corresponding area.

A gaze detection apparatus performs a calibration operation including displaying a target image in multiple positions on a display screen sequentially, setting, in the display screen, corresponding areas corresponding to the target images displayed on the display screen sequentially, and calculating positional data of points of regard in display periods in which the respective target images are displayed; and determines, with respect to each of the target images, whether the positional data of the point of regard that is calculated in the calibration operation is present within the corresponding area.

An electroactive device may include a primary electrode, a secondary electrode overlapping at least a portion of the primary electrode, and a tertiary electrode overlapping at least a portion of the secondary electrode. The electroactive device may also include (i) a first electroactive polymer element including a first elastomer material disposed between and abutting the primary electrode and the secondary electrode, and (ii) a second electroactive polymer element including a second elastomer material disposed between and abutting the secondary electrode and the tertiary electrode. Various other devices, methods, and systems are also disclosed.

Embodiments of the present disclosure relate to computer storage, methods, and systems for the optimization of accessible color themes. Systems and methods are disclosed that leverage the use of confusion lines to identify and highlight relationships between colors that may be inaccessible (e.g., indistinguishable) for a person with a vision impairment, such as a color vision deficiency. In some embodiments, a graphical user interface is provided that, based on a selection of colors in a color wheel, visually indicates curves of confusion for each color in the selection of colors. Each curve of confusion visually indicates a confusion of colors for a type of vision impairment, such as a CVD.

A method identifies at least one malfunctioning nozzle in a digital printing press, the digital printing press including a plurality of nozzles. The method includes printing a design on a substrate, acquiring at least one image of the printed design and identifying at least one artifact in the acquired image. The method further includes identifying the malfunctioning nozzle and classifying the at least one malfunctioning nozzle according to the at least one of the acquired image of the printed design, at least a portion of a nozzle pattern and at least a portion of a uniformity pattern.

Methods and systems for administering a modular and/or flexible eye test to patients are presented that leverages on the visualization, processing, and eye tracking capabilities of a head mounted display (HMD). In an embodiment, a method for evaluating the pupillary responses includes using a head mounted display (HMD) worn by a patient to expose a first eye to light stimulation in accordance with a relative afferent pupillary defects (RAPD) eye test, an imaging device of the HMD receiving image data of the first eye, then exposing a second eye to the same RAPD eye test and receiving image data of the second eye, and generating at least one test result by using the image data of the first eye and the image data of the second eye.

The invention relates to the evaluation of the perception of colors by mammals with a view to obtaining a characteristic biomarker of each tested subject. It takes advantage of the slow pupillary oscillatory response to generate an objective neurological signature of this perception of colors. A method based on pupil frequency tagging is used at a tagging frequency F.sub.tag adapted to the pupil response speed. A dynamic two-color stimulus is displayed, this stimulus comprising a two-color pattern the colors of which are inverted at the frequency F.sub.tag, one of the colors gradually varying in a range of possible values. From the pupillary response, a signal representative of the oscillation power of the pupil is generated. The minimum of this signal corresponds to the relative iso-luminance of the tested pair of colors.

The invention generally relates to devices that demonstrate the function of ophthalmic lenses that modify human color perception and to methods and devices that simulate color vision deficiency or color blindness.

An illumination light adjusting system according to the present disclosures includes a color vision characteristics storage configured to store color vision characteristics of a user, and a wavelength characteristics changing unit configured to change wavelength characteristics of illumination light based on the color vision characteristics stored in the color vision characteristics storage.

A system can include a non-transitory memory to store machine readable instructions and data, and a processor to access the non-transitory memory and execute the machine-readable instructions. The machine-readable instruction can include a global module that can be programmed to generate a visual field map (VFM) model that can include a set of visual function map parameters for an entire visual field for a subject. The global module can be programmed to update the set of visual function map parameters corresponding to updating a shape of the VFM based on subject response data generated during each administration of a vision test to a subject.