176 results about "Visual Disturbance" patented technology

Aspects of the present disclosure relate aids for the visually impaired. An apparatus to assist a visually impaired person in navigating an environment includes a head-worn computer, a radar system mounted on the head-worn computer and positioned to measure distances to objects in the environment within an angular field in front of the visually impaired person wearing the head-worn computer, and a processor adapted to process the measured distances from the radar system and to identify objects in the environment that are within the angular field in front of the visually impaired person. The processor is further adapted to generate feedback cues to the visually impaired person in correspondence to the measured distances within the angular field in front of the visually impaired person as the visually impaired person moves his head from side to side while navigating the environment.

A portable electronic device system provides features to assist a visually impaired or elderly end-user. The system includes a protective case for the portable electronic device, which facilitates the handling and usability of the device for visually impaired or elderly end-users. The case includes a replaceable extension unit, enabling many different sorts of extension unit accessories to be swapped in and out. The system includes a software application executable on the portable electronic device, which enables the device to switch to another and simpler user interface which also enables control of the features or functions provided by the specific extension unit that has been fitted.

The chromatic vision correction resin glasses with reduced concave reflection is manufactured according to the following steps. First, the resin eyeglass is dyed chemically to meet the requirements of 4 sorts (21 kinds) of chromatogram correction curves. Second, the convex of resin eyeglass is coated in a vacuum environment with a CF film, the thickness of which should be controlled to make the light permeability of the dyed resin eyeglass decrease about 10% to lower the reflection of its concave. Third, in order to reduce concave reflection further, it is practicable to coat the concave with permeance promotion film by evaporation. This technique can eliminate the visual disturbance of eyes imaging which occurs in the surrounding of intensive light. As a result, the effect of chromatic vision correction is improved. Meanwhile, it also can diminish the production cost, increase productivity, so that it not only achieves the aim of chromatic vision correction, but also has the effect of eyes' protection.

This disclosure relates to an electronic device for compensating for a visual impairment. The electronic device comprises a display to display a graphical user interface to a user and an input port to receive a request for modifying the graphical user interface to compensate for a visual impairment of the user. The device further comprises a processor to modify the graphical user interface to compensate for a visual impairment of the user by replicating an optical effect of one or more optical lenses. A visually impaired user can operate the device because the processor modifies the interface to compensate for the visual impairment. Without the modification of the interface, it would be difficult for the user to operate the device because the visual impairment causes the interface to appear blurred.

The invention is in use for providing device and method of graphics text information for crowd of visual disturbance. In the device, mouse, keyboard or pick-up head through series-parallel ports or USB port are connected to computer. Through mouse, keyboard or pick-up head, operator selects expectant graphics text. Through series-parallel ports or USB port, signal of graphics text output from computer is connected to a haptic stimulus device of jet flow. Through control cable, output signal of the haptic stimulus device of jet flow is connected to haptic display of jet flow. Finally, information of graphics text in haptic mode of jet flow acts on skin surface of operator. The operator obtains knowledge and haptic cognition about surrounding environment. Using confluent characters of pressure-temperature of jet flow stimulus, the invention can provide haptic display of heat sensation or information of color graphics text.

The invention discloses a corner point detecting and matching-based medicine recognition system and a corner point detecting and matching-based medicine recognition method. According to the adaptive-threshold multi-scale AGAST algorithm, the corner point features of a medicine image are detected, and then a plurality of corner points are obtained. Based on improved FREAK description operators, the corner points of the medicine image are described by utilizing binary feature description character strings. The medicine image is trained, and then a medicine library corresponding to feature descriptors and the medicine information is established. Based on the feature descriptors of a training image and a target image, the hamming distance between the two images is calculated, so that two images are matched. Therefore, corresponding medicines can be recognized. In various complex environments, the system and the method are high in recognition speed and accuracy. Meanwhile, the visually impaired people can be better helped.

A process for providing upset recovery training (URT) includes using a sustained-G multi-axis platform (e.g., a centrifuge-based simulator). Various embodiments of the present invention address an important aspect of URT that is not present in the prior art, namely the placing of physiological stresses on the trainees during URT, such as sustained motions including, but not limited to, sustained, elevated G-forces and continuous rotational cues. Elevated, sustained, G-forces and continuous rotational cues can create many physiological challenges to aircrew. These challenges can include motion discomfort, disorientation, and visual disturbances. Embodiments of the present invention provide URT that includes physiological stresses on the pilot. If a pilot learns the correct procedures for recovery from an upset, as in the prior art URT programs, but cannot execute the procedures in the real world because he or she has not been prepared for the physiological environment to be faced, then safety is compromised. Embodiments of the present invention address this deficiency.

The invention provides an intelligent guiding system based on image recognition and used for the blind, belonging to the technical field of artificial intelligence. According to the invention, a userterminal comprises an information collection module which collects video image data, voice navigation instructions, real-time motion data and real-time position information in front of a person with visual impairment in real time. A cloud server comprises a cloud navigation module for generating a navigation route according to the voice navigation instructions and the real-time position information, and a cloud decision module used for detecting a target object in the advancing direction of the visually-impaired person according to a first target detection model and generating a cloud feedbackinstruction to guide the visually-impaired person to advance in a voice broadcast mode. The user terminal further comprises a local decision module which detects the target object in the advancing direction of the visually-impaired person according to a second target detection model and generates a local feedback instruction to guide the visually-impaired person to advance in a voice broadcast mode when the cloud decision module does not respond in time. According to the invention, various obstacles and traffic lights can be effectively identified, and visually-impaired people can be assistedin accurately perceiving a surrounding environment.

The present invention relates to an intrastromal corneal device for reshaping the curvature of the cornea comprising a substantially circular structure having a convex surface provided with openings for biological exchange between the layers of the cornea, said substantially circular structure comprising the shape of a circular segment or of a spherical/aspheric cap provided or not with a central opening. Said device further comprises means for promoting the reshaping of the cornea, so that it assumes a curvature closer to the intended curvature, thus providing a significant reduction of visual disturbances caused by corneal ectatic conditions such as keratoconus.

Provided is an ophthalmic nanoemulsion composition and a method for preparing the same which increases the solubility of cyclosporine as an active ingredient and improves the stability of the ophthalmic composition by mixing cyclosporine, a nonaqueous solvent, an emulsifier, and an aqueous solvent, and a method for preventing or treating dry eye syndrome using the same. The ophthalmic nanoemulsion composition is characterized by having an average particle size of 200 nm or less, preferably 100 nm or less, and having a very narrow particle distribution. Therefore, sterilizing filtration is available, stability is improved, and the composition has superior effect in clinical treatment of dry eye syndrome while minimizing foreign body sensation and visual disturbance, and thus the ophthalmic nanoemulsion composition of the present disclosure can be effectively used as an ophthalmic composition.

The invention discloses a binocular camera-based real-time step detection method. The method comprises the following steps of: obtaining depth information of two images acquired by a binocular camerathrough a parallax between the two images, and reconstructing the depth information under a camera coordinate system into a three-dimensional point cloud under a world coordinate system by combining anine-axis gyroscope (gravitational acceleration, gyroscope, magnetometer); segmenting a point cloud formed by a road and other point clouds through a plane fitting method; and carrying out plane fitting on the point cloud formed by the road so as to judge whether the road is flat or formed by steps. The method is capable of detecting upper steps, lower steps and distances from the steps to users,so as to help the persons with visual disturbance (blind persons and persons with poor eyesight) to go up and down steps and then ensure the personal safety; the method adopts passive detection, so that the power consumption is low and other persons are not interfered; and through comprehensively considering possible interference factors in various practical environments, the method has the advantages of being high in speed, high in precision and high in cost performance.

Contrast sensitivity is an informative measure of visual function, but current tools for assessing it are limited by the attentional, motor, and communicative abilities of the participant. These participants are often less able to engage with psychophysical tasks or follow an experiment's instructions, and alternative approaches have disadvantages that limit their usefulness in clinical settings. Here, we describe an efficient new measure of contrast sensitivity—‘Curveball’—that continuously infers stimulus visibility through smooth eye tracking instead of perceptual report. The procedure rapidly lowers stimulus contrast in real time until the threshold is found. The task is repeatable, well-correlated with results from conventional psychophysical methods, and sensitive to improvements in visual acuity from refractive correction. The procedure requires minimal instruction to administer and takes only five minutes to estimate a full contrast sensitivity function (CSF), which is comparable to the best existing methods available for healthy adults. Our technique relies on a minimum level of smooth tracking ability, which could limit its usefulness for participants with specific visual impairments, and we discuss potential solutions to this problem. Overall, our findings indicate that Curveball is a promising means of accurately assessing contrast sensitivity in previously neglected populations.

A method to measure gaze tracking behavior comprising, displaying, on a display, one or more variable-contrast, variable-spatial-frequency stimuli each moving from a first location to a second location. Generating ordered sequences of stimuli (“sweeps”) that are incremented upon detected tracking behavior. Generating, by an eye-tracking monitor, a gaze position signal as the visual stimulus moves from the first position to the second position, the gaze position signal detecting a position of one or both eyes. Filtering the gaze position signal by identifying gaze position samples that are not consistent with the limitations of the human eye and/or visual system. Calculating a trajectory-match score for each stimulus on each frame from comparison of that stimulus's position to the gaze position signal over a time window. Identifying the visual function of the subject in response to the trajectory-match scores. Wherein the variable-contrast stimulus increases in contrast. Wherein the variable-contrast stimulus decreases in contrast. Wherein the variable-contrast stimulus alters in a step-wise manner by multiplying the current contrast by a variable between 0.5-1.5 on each frame. Wherein the variable-contrast stimulus is exchanged for the next stimulus in that sweep sequence. Wherein indirect progress along similar sweeps is inferred and recorded. Interpolating a contrast sensitivity function (CSF) from a set of one or more sweep sequences. Detecting, empirically, the subset of one or more sweep sequences that is most informative about the CSF for a given population.

The invention relates to a mobile phone and a method for prompting battery power consumption thereof. The method for prompting the battery power consumption comprises the following steps: a power consumption signal outputting step, in which the power consumption of the battery shown by a plurality of bars is calculated via a mobile phone battery power consumption calculating module, and the power consumption signal is output once correspondingly when one bar for showing the power consumption is decreased; a signal output device controlling step, in which a mobile phone power consumption control module receives the power consumption signal, outputs a corresponding image display signal to a display screen of the mobile phone and outputs a corresponding audio signal to a loudspeaker of the mobile phone or outputs a low-frequency vibration signal to a vibrator of the mobile phone; and a power consumption informing step, in which a prompting frame pops up on the display screen to prompt corresponding residual electric quantity, and simultaneously, the loudspeaker outputs a voice signal to prompt the corresponding residual electric quantity, or the vibrator vibrates to prompt. The method can remind a user of the power consumption state in time, and brings much convenience to normal use of the mobile phone for users with visual disturbance or mobility impairments.

The invention relates to the technical field of medicines, in particular to a tongue point encephalopathy therapy apparatus for treating encephalopathy and protecting health and beautifying, comprising a therapy head having a tongue-surface-shaped upper piece and a sublingual lower piece; the upper piece and the lower piece are connected at one end to form an integral holding structure; the upper piece and the lower piece are respectively provided with electronic points; electric pulse signals are provided through a control device to the electronic points. The invention adopts electric, magnetic, infrared, laser and physical vibration effects to stimulate the points on the tongue of a human body corresponding to the treatment of encephalopathy so as to play the role of treating the encephalopathy of the human body. The tongue point encephalopathy therapy apparatus has obvious effect in treating senile dementia, presenile dementia, spinocerebellar atrophy, parkinsonism, staggers, encephalalgia, trigeminal neuralgia, neurasthenia, insomnia, tristimania, cerebral palsy, infantile autism, hypophrenia, glaucoma, optic atrophy, amblyopia, inborn visual disturbance, tinnitus, deafness, paralysis vocal cord, aphonia, hoarseness, pollinosis, aging resistance, wrinkle reduction, internal secretion regulation, apoplexy (including sequela of brain damage, and the like), facioplegia, facial spasm, and the like.

A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.

The invention provides a filtering method and device. According to the application, a matched filtering strategy is determined for a data block in distorted video data regardless of an encoding end ora decoding end, and then the data block is filtered according to the filtering strategy matched with the data block, so that distortion of the distorted video data is removed, and visual impairment or false images caused by distortion are prevented.

The invention discloses a pleoptic device for curing vision disorder diseases in the ophthalmology department, which comprises an electric pulse generating device (10) used for generating the electric pulse for stimulating vision excitation, delivering visual information and generating visual effects, a pair of electrode plates (20) and a medicine patch (30) that is full of liquid medicine, wherein, the electric pulse generating device (10) is connected with the electrode plates (20) by a guide wire (15) and the electric pulse generated by the electric pulse generating device (10) is conducted onto the medicine patch (30) by the electrode plates (20). The medicine patch (30) contains the liquid medicine with ingredients for curing the vision disorder diseases in the ophthalmology department. The pleoptic device of the invention can effectively cure amblyopia and have a pleoptic effect on the vision disorder diseases in the ophthalmology department, such as cataract, glaucoma, optic atrophy, etc. In addition, the pleoptic device of the invention also has the eye health function.

The invention relates to the field of anti-counterfeit technologies, in particular to a two-dimensional code label with braille alphabets. The two-dimensional code label with the braille alphabets comprises a label body, a two-dimensional code I, a braille alphabet region and a two-dimensional code II; the two-dimensional code I and the two-dimensional code II are respectively arranged at two ends of the label body; the braille alphabet region is arranged in the center of the label body; the braille alphabets are printed in the braille alphabet region; by the design of the two-dimensional code I and the two-dimensional code II, the purpose of increasing the difficulty on counterfeiting of the two-dimensional code label is achieved; by the design of the braille alphabet region, a function of assisting in blind persons and other vulnerable groups suffering from visual disturbance to distinguish products by toughing with hands is fulfilled; the two-dimensional code I and the two-dimensional code II are printed in a spraying manner by printing ink with certain transparency in different colors, consumers can quite easily observe the stacking effect of the printing ink effectively, and meanwhile, the counterfeiting difficulty of the two-dimensional codes is increased; and the two-dimensional code label with the braille alphabets is user-friendly in design and high in counterfeiting difficulty, and has good application prospect and market value.