31 results about "Color vision deficiencies" patented technology

Disclosed are a method and a system that adaptively transform visual contents inputted from a network, in accordance with the visual characteristics of a terminal user. A visual characteristics descriptor that describes the information of the user visual characteristics in a predetermined format is proposed. The descriptor includes the information of the color vision deficiency type and the color vision deficiency degree. The color vision deficiency may be described in numerical degree or textual degree. The invention adaptively transforms visual contents differently in accordance with the color vision deficiency type.

An input control device and an image forming apparatus capable of proving an easy-to-use operating environment even for a user having difficulties operating such conventional devices and apparatuses due to his/her height, color vision deficiency, weak vision, use of a wheelchair, and the like is disclosed. In the input control device, based on the detected distance between an instruction item on the display and an operation direction means (such as a user's finger), the display mode of the instruction item is changed (by, for example, changing positions, colors, and combinations). Further, as the operation direction means approaches, the size of the instruction item on the display becomes larger, thereby improving the operability especially for a user with color vision deficiency or weak vision.

An object of the present invention is to provide a visual aid network system for supporting people with color vision deficiency, using high functionality, conveniently portable size, and proliferation of mobile phones equipped with a digital camera. A visual aid network server of the present invention comprises: image data receiving means for receiving image data from a portable terminal; user data storing means for storing the image received by the image data receiving means; image color data analyzing means for obtaining the image data from the user data storing means to generate color data of the image; and color data transmitting means for transmitting the color data generated by the image color data analyzing means to the portable terminal.

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 embodiment of the invention discloses an image display method and device, a terminal and a storage medium, and the method comprises the steps: displaying at least one color vision detection imagewhen a color vision detection instruction is received; receiving user feedback information corresponding to the at least one color vision detection image; determining a target color to be corrected according to the at least one color vision detection image and user feedback information corresponding to the at least one color vision detection image; determining a compensation parameter of the target color based on a preset algorithm; and according to the target color and the compensation parameter of the target color, performing color correction and display on a to-be-displayed image. Accordingto the image display method and device, the terminal and the storage medium provided by the embodiment of the invention, the audio-visual experience of a user with abnormal color vision is improved.

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.

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 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.

The invention discloses an image processing method and device, equipment and a storage medium. The method comprises the steps: obtaining an input image, and carrying out the color detection of the input image, and obtaining a color detection result of the input image; generating a pixel matrix according to a color detection result if the color detection result shows that the color vision abnormal region exists; obtaining a target color value of the color vision anomaly region according to a preset color matrix and the pixel matrix; according to the target color value, carrying out color conversion on boundary pixel points of the color vision anomaly region; according to the method, only the colors of the boundary pixel points of the color vision abnormity area are refilled, and the color of the image is locally adjusted, so that the color weakness patient can be helped to capture information in the image, and people with normal vision cannot be influenced to view the image. The possibility of enjoying film watching without barriers is provided for families or groups with color weakness patients.

The invention relates to a red color blindness correction lens and a preparation method thereof. The lens contains an acrylate/spiropyrane/nanometer cobalt oxide three-layer composite core-shell structure optooptic material, wherein the core is cobalt oxide nanometer microspheres, the microspheres are coated with a spiropyrane compound represented by a formula I, and the shell is acrylate; the mass ratio of the cobalt oxide nano microspheres to the spiropyrane compound to the acrylate is 1: (1.2-1.4): (0.8-1); the mass ratio of the core-shell structure optooptic material to the lens resin base material is 1: (30-200); and the optooptic material has light filtering and color complementing effects in the lens. The color of the lens is darker under indoor normal light, so that the color purity of a red wave band spectrum and the dimension of a color vision vector space can be enhanced, the color discrimination ability of a red color blindness patient is improved, and color vision abnormity is corrected; the lens can rapidly fade to be light or colorless when coming outdoors, so that it is ensured that the patient looks true objects. The lens has the advantages of high color saturation, good color discrimination effect, comfort in wearing and the like.

The invention relates to a detection method for color discrimination ability. The detection method comprises the following steps of: step 1, preliminary judgment of color weakness: preliminarily judging the color vision condition of a testee; step 2, subdivision of red and green color weakness: accurately measuring the red and green color vision ability defects of the testee; step 3, detailed analysis of color vision perception: obtaining color discrimination ability values of the testee at different angles; step 4, confirmation of color vision defect degree: detecting the color discrimination ability defect degree of the testee; step 5, spectrum-based color perception: performing spectrum-based treatment on detection data and/or results to draw a corresponding curve graph. The detection method can accurately and efficiently detect the color discrimination ability defect degree of a patient, so that the color vision of the patient can be corrected in the later period.

The invention belongs to the field of teaching application of information technology, and provides a barrier-free VR teaching resource color optimization method for people with abnormal color vision, which comprises the following steps: (1) constructing a color cognitive factor system; (2) constructing a color evaluation model; and (3) generating a color scheme optimization model. According to the method, the requirements of people with abnormal color vision are comprehensively considered, various types of tasks are designed, and color cognition differences are analyzed; a color evaluation model is constructed by using an integrated learning method; the color scheme is optimized by firstly subdividing color pattern spots on an image and then screening the color pattern spots. According to the method, when non-professionals design and optimize VR teaching resources, the universality of a color scheme is achieved, and the fairness requirement of the educational resources is met.

The invention relates to a blue color weakness correction lens and a preparation method thereof, wherein the lens contains an acrylate/spiropyrane/nano copper oxide three-layer composite core-shell structure optooptic material, the inner core is a copper oxide nano microsphere, the microsphere is coated with a spiropyrane compound represented by a formula I, and the shell is acrylate; the mass ratio of the copper oxide nano microsphere to the spiropyrane compound to the acrylate is 1:(1.1-1.3):(0.9-1); and the mass ratio of the core-shell structure optooptic material to the lens resin base material is 1:(30-200). The optooptic material has light filtering and color complementing effects in the lens. The color of the lens is dark under normal indoor light, the color purity of a blue band spectrum and the dimension of a color vision vector space can be enhanced, the color discrimination ability of a blue color weakness patient is improved, color vision abnormity is corrected, the lens can rapidly fade to be light or colorless when coming outdoors, and it is ensured that the patient looks true objects. The lens has the advantages of high color saturation, good color discrimination effect, comfort in wearing and the like.

The invention relates to an organic/inorganic nano-composite microsphere optooptic material and an application thereof, wherein the material is an acrylate/spiropyrane/transition metal oxide nano microsphere three-layer composite core-shell structure, an inner core is a transition metal oxide nano microsphere, the microsphere is coated with a spiropyrane compound represented by a formula I, and the shell is acrylate; and the mass ratio of the transition metal oxide nano microsphere to the spiropyrane to the acrylate is (2-4):(2-3):(1-2). The material can be added into a resin optical material or an optical lens as a light-filtering color-complementing material. The color of the lens is darker under normal indoor light, the spectral color purity of a certain wave band and the dimension of a color vision vector space can be enhanced, the color discrimination ability of a color blindness patient is improved, color vision abnormity is corrected, the lens can rapidly fade to be light or colorless when coming outdoors, and it is ensured that the patient looks true objects. The material has the advantages of high color saturation, good color discrimination effect, comfort in wearing and the like.