86 results about "Chromatic vision" patented technology

A method for automatic partial correction of the color contrast and intensity of color images. The images are processed in a manner similar to that by which the visual system processes signals related to color vision, to achieve better color contrast and to enhance achromatic contrast intensity for both still and video images.

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.

In one embodiment, a method is disclosed that includes selecting a first color sample within a target area in a first image of a first object displayed by a display device; selecting a second color sample within a target area in a second image of a second object displayed in the display device; comparing the first color sample against the second color sample to determine a measure of color difference or a measure of color equivalence between the first color sample of the first object and the second color sample of the second object; and displaying the results of the comparison to a user in the display device. One or more of these functions may be performed with a processor.

The invention discloses embodiments related to the improvement of user color resolution of a perspective display device. For example, according to a disclosed embodiment, a virtual image is constructed and displayed on the perspective display device, and is superimposed on a realistic image, wherein a user sees the realistic image through the perspective display device. The virtual image is configured to strengthen the site of a color, which is not well distinguished by the user, in the realistic image. The virtual image is superimposed on the realistic image in the manner of registration with the realistic image in the view of the user, and the virtual image is displayed.

The invention discloses a color vision correcting lens, color vision correcting equipment and a manufacturing method of the color vision correcting lens. The color vision correcting lens comprises a lens body, wherein an all-dielectric multilayer membrane pack with a selective spectrum transmission cutting-off feature is deposited on the front side of the lens body, a visible-band broadband antireflection multilayer membrane pack is deposited at the back of the lens body, the transmission of the band of 545-555 nanometers is not larger than 1%, the transmission of the band of 435-450 nanometers is 15-25%, and the transmission of the band of 640-655 nanometers is 25-35%. The color vision correcting lens has the advantages that appropriate high-refraction-index and low-refraction-index membrane design is selected, transmission is allowed to be cut off at specific bands while rest visible bands can transmit without obstruction, all environment representation information, brightness information and rich color information are obtained, the color vision abnormality of target groups is weakened greatly, and the quality and satisfaction of learning, work and life of the target groups are increased; the color vision correcting lens is compact in structure, simple to manufacture, low in cost and convenient in large-scale production.

The present invention relates to a laminated polarizing plate set and to an IPS mode liquid crystal display device comprising same. More particularly, the present invention relates to a laminated polarizing plate set comprising positive A plates arranged on an upper polarizing plate and on a lower polarizing plate, wherein each positive A plate has a front surface phase difference value (R0) of 10 to 100 nm, and a refractive index ratio (NZ) of 0.9 to 1.1, and has a slow phase axis arranged parallel to the absorption axis of a polarizer. The present invention also relates to a liquid crystal display device comprising the laminated polarizing plate and to an IPS mode liquid crystal.; The laminated polarizing plate set according to the present invention has superior physical resistance and maintains the designed phase difference compensating effects even when the plate set is exposed to a high-temperature, high-humidity environment over a long period of time, and therefore the IPS mode liquid crystal display device comprising the plate set can ensure a wide viewing angle even in a high-temperature, high-humidity environment, and improves chromatic vision at a surface thereof that is tilted.

The invention discloses a design method for an optical device. Through employing a transmission spectrum design of selecting a coloring agent and the concentration of the coloring agent and carrying out the correction of blue and yellow color weakness and blindness, the method can correct the color perception of a person with the blue and yellow color weakness and blindness, and maintains or slightly changes the position of a color sense white point of a user while improving the blue and yellow color resolution.

The invention provides an advantageous system and corresponding method for measuring a plurality of aspects of vision. It is a computer-implemented, user-interactive system which can be used by practitioners such as opticians to measure and assess a patient's visual acuity. It comprises a handheld computing device arranged and configured to present at least one optotype to a user (patient) within a gamified environment. This aspect of the invention provides the advantage that it is more easily used by certain types of patients, such as children, the elderly or those suffering from medical/clinical conditions who would typically struggle to use traditional measuring tools. In a preferred embodiment, the optotype has at least one characteristic selected to facilitate the measurement of at least one, or preferably at least two, aspects of visual function; and the invention is arranged to detect the user's response to the optotype to provide a measurement of at least one or at least two aspects of visual function. Advantageously, this can be achieved in one ‘sitting’. The plurality of aspects of visual function can include visual acuity, central visual field, contrast sensitivity, stereopsis and/or colour vision, detection acuity of vision, resolution acuity of vision (spatial resolution or identification of static of dynamic directionality), recognition acuity of vision, hyperacuity of vision, temporal acuity of vision, spectral acuity of vision. The at least one optotype is repeatedly presented to the user, and the at least one characteristic is altered upon each repetition. The repetition may continue until a threshold or limit is reached. The at least one characteristic relates to the level of detail, contrast, colour, position or movement of the at least one optotype.

Ophthalmic lens for improved colour perception comprising a first organic optical filter having a reflection band with a reflection peak comprised in the range [400 nm-460 nm], and a second organic optical filter F2, different from F1, having a reflection band with a reflection peak comprised in the range [530 nm-650 nm].

The invention discloses an image texture detail enhancement method for the color vision disorder. The method comprises the following steps: (1) converting an image color space into an LMS color space;(2) respectively extracting details of L, M and S channels in an LMS space for a patient with the color vision disorder of a specific type; (3) adding the details extracted in the step (2) to color channels which are corresponding to the image processed in the step (1) and can be perceived by other two color impaired people of the type, the obtained image being a final enhanced image; and (4) converting the LMS color space back to the RGB color space for display or storage. According to the texture detail enhancement method provided by the invention, the richness of image detail textures of apatient suffering from the color vision disorder at a visual angle is well improved, and since part of texture details of the image are extracted, the image quality and visual perception after colorcorrection are improved while the authenticity of the image is ensured.

A computer-implemented method for modifying one or more contents of an electronic learning system for a user impaired by a colour vision deficiency. The method includes: generating a vision profile for the user, the vision profile indicating at least a type of the colour vision deficiency, identifying, from the one or more contents, a content to be modified, the content including at least two portions formed of a first colour and a second colour, respectively, the first colour being different from the second colour but the first colour being at least partially indistinguishable from the second colour by the user due to the colour vision deficiency, identifying a content transformation to be applied to the content based on the vision profile, the content transformation including one or more adjustments of the content to accommodate the colour vision deficiency impairing the user; and applying the content transformation to the content.

Methods of using anti-integrin peptides for a) improving best corrected visual acuity of an eye of a subject suffering from non-exudative age related macular degeneration and/or b) improving color vision in an eye of a subject suffering from impaired color vision and/or for treatment of other disorders.

The present invention relates to optical lens for correcting color vision for individuals with color vision deficiency comprising a substrate and an absorbing dye which has at least a minimum light transmission factor at a wavelength ranging from 515 nm to 80 nm that is lower than or equal to 40% and quickly varying transmission around 500 nm and around 595 nm.

The invention discloses an image processing method and device, computer equipment and a medium. The method comprises the steps that: the visual auxiliary information of a target user is obtained, wherein the visual auxiliary information at least comprises a target color vision disorder type and a color vision auxiliary recognition degree; color vision disorder prediction is performed on a to-be-displayed initial image by adopting the target color vision disorder type to obtain a color vision disorder view, wherein the color vision disorder view comprises target pixel points which the target user perceives abnormally; according to the color vision auxiliary recognition degree and the target color vision disorder type, target color values of the target pixel points in the color vision disorder view are corrected; and the corrected view and the initial image are fused, so that a visual auxiliary image can be obtained, and the visual auxiliary image is outputted. According to the image processing method and device, the computer equipment and the medium of the invention, the recognition degree of the image can be effectively improved, the user can be well assisted to carry out image recognition understanding, and thus the user viscosity is effectively improved.

An eyewear lens is described that provides polarization filtering and spectral filtering using polarization interference. The lens produces enhanced saturation and colorfulness, increasing enjoyment when observing commonly encountered imagery. The lens can be configured to optimize accuracy/efficiency when performing a task involving colored imagery, and can improve performance in sports. The lenscan further be helpful for color scrimination by those with certain types of color vision deficiency.

The invention discloses a pair of color blindness and color amblyopia correction glasses and a preparation method thereof, and belongs to the field of optical materials. The correction glasses comprise a substrate lens and nanoparticles mixed in the substrate lens, each nanoparticle comprises a metal nanometer core capable of generating surface plasma and a film shell layer wrapping the surface of the metal nanometer core, and the film shell layer wraps the surface of the metal nanometer core through self-polymerization reaction. The size of each metal nano-core is preset, and the size of the metal nano-core corresponds to a target to-be-filtered spectrum interval of the correction mirror. According to the invention, accurate narrow-band absorption can be realized on the spectrum by adjusting the size of the nanoparticles doped into the substrate lens, so that the technical problems that the existing color blindness correction glasses cannot realize accurate color filtering according to the specific color blindness condition and the color vision correction effect is limited are solved.

The invention belongs to the technical field of display, and discloses a color conversion method and device, equipment and a storage medium. The method comprises the following steps: acquiring a perception setting instruction of a user; determining the color vision disorder degree of the user according to the perception setting instruction; determining a corresponding color disorder mode according to the color disorder degree; determining a to-be-converted color in a to-be-converted image according to the color barrier mode; and converting the to-be-converted color into a corresponding color to obtain a target color of the to-be-converted image. By means of the mode, the corresponding color barrier modes can be determined according to different color vision disorder conditions of different users, the colors which cannot be perceived by the users are converted into the pictures with the best user impression according to the color barrier modes, the users can distinguish all the colors of the pictures, and the user experience is greatly improved.

The invention relates to an abnormal color vision test chart synthesis method based on false homochromatic search. The method mainly comprises the following steps: searching a false homochromatic pair; selecting a false homochromatic pair; generating a test image; the invention aims at a test pattern for testing the color vision condition of a subject in an abnormal color vision test , selects a false homochromatic pair in a color space by menas of the abnormal visual simulation algorithm, carries out binarization color filling on the abnormal vision test pattern, so that the abnormal color vision test pattern which is diverse in content, capable of being randomly repeated and specific in abnormal color vision type is generated, and compared with an existing manual drawing method or a computer-assisted semi-manual drawing method, the method is flexible, random, simple and controllable, and has specificity for different abnormal color visions.

The invention relates to a preparation method of an organic/inorganic nano composite microsphere optooptic material, wherein the preparation method comprises the steps: I, weighing an acrylate monomer, a spiropyrane compound represented by a formula (I) and transition metal oxide nanoparticles according to a mass ratio of (1-2):(2-3):(2-4); II, adding an emulsifier, transition metal oxide nanoparticles and a sodium acetate saturated aqueous solution into water; III, adding a cross-linking agent into the reaction system, introducing nitrogen, and adding a spiropyrane compound solution; and IV, adding an acrylate monomer, adding an initiator at the temperature of 65-90 DEG C, carrying out heat preservation polymerization for 12-18 hours, filtering, washing and drying. The material prepared by the method is of a three-layer composite core-shell structure, and can be added into a resin optical material or an optical lens as a light-filtering color-complementing material. The lens material is dark in color under indoor normal light, can automatically enhance the spectral color purity of a certain wave band and the dimension of a color vision vector space, improves the color discrimination ability of a color blindness patient, and corrects color vision abnormality.

A color vision function test method based on visual evoked potential comprises: designing red-green rollover stimulating paradigms, designing a stimulating paradigm red-green brightness ratio gradient, setting up a brain-computer interface platform, presenting the stimulating paradigms, testing through SSVEP (steady-state visually evoked potential) color vision quantification, and feeding back theresults of color vision test. A series of SSVEP paradigms of different red-green brightness contrasts are designed herein; corresponding color vision qualitative and quantitative judgment indexes areprovided; an objective quantitative measuring method is provided for color vision function test in ophthalmologic examination.

The invention is directed to a contact lens for color blindness, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the pupil section comprising a dye containing layer which is enclosed between two clear layers so that the dye cannot leach out, wherein the dye filters out the specific wavelength bands between 545 nm and 575 nm to correct color vision blindness; wherein the iris section having a colored, printed, opaque, intermittent pattern, said pattern comprising: an annular pattern of a color and at least at least one other colored patterns extending across a portion of the iris section selected from a group of patterns consisting of outermost starburst pattern, outer starburst pattern and inner starburst pattern