40 results about "Colour Vision" patented technology

A color display system is provided that may be suitable for use in a navigation system. The color display system includes a controller that selects a color scheme for the images and / or text displayed by a color display device in response to an indication of the user's ability to distinguish colors. The color display system further includes a user interface arranged to exchange information with the user, which may include color vision deficiency information indicating the user's ability to distinguish colors. Using the information regarding the user's ability to distinguish colors, the color display system may be configured to modify at least one parameter of the display's color scheme in response to a user's color vision deficiency information.

In a method of and an apparatus for detecting three-dimensional defects in the automatic inspection of moving surfaces by means of a color vision system the surface of a moving test specimen which is to be inspected is illuminated with light of different colors simultaneously from at least two different directions, such that edges of three-dimensional defects on the surface appear with a different coloring, and on the basis of the altered coloring, at least two channels of the color image are evaluated to detect three-dimensional defects and to differentiate same from planar defects.

Disclosed is a method for evaluating the qualities of the user's color vision by means of the FM chromaticity test or directly measuring the defective factors of the user causing the color blindness. Thus it modifies the color composition of a video displaying apparatus according to a numerical analysis of the color and degree of color blindness specific to each dichromatic individual, so that he may perceive the same colors as the normal person. Also discloses is an apparatus for performing the method steps described herein.

Disclosed embodiments relate to techniques for color gamut mapping when an input signal transmitting color visual images has a different color gamut than does the output display device. Polynomial rubber-sheet mapping may be used to translate the input color gamut to the output color gamut on a hue-by-hue basis within a three-dimensional perceptual color space. Also, a memory color look-up table may be used to preserve memory colors in the input gamut which are capable of reproduction within the output gamut. By using such techniques alone or in combination, it may be possible to more effectively map an input color gamut to a different output color gamut with improved calorimetric accuracy.

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.

Disclosed are a method of compensating colors in an image display device for users with color vision deficiency and a device of the same, enabling the users with color vision deficiency to view display images as vividly and naturally as normal users. The method for compensating colors in an image display device includes a step of determining whether a user is partially color blind or normal, and a step of controlling gain values of a plurality of color signals depending upon the user's color perceptivity so as to compensate colors displayed on a screen, if the user is determined to be partially color blind.

An image storage apparatus comprises: a photograph information analysis processor for outputting photograph information perception data quantitatively associated with perception terms (language) relating to photograph images; and a color perception analysis processor for outputting color perception data quantitatively associated with perception terms relating to colors of the images. The output data are stored in the storage apparatus. When receiving search terms of photograph information and color perceptions of retrieval target images, an image retrieval apparatus compares the search terms with image content language data stored in the storage apparatus to narrow the language data, and extracts images in descending order of priority (scores) of the perception terms corresponding to the search terms with reference to photograph information and color perception data attributed to the retrieval target images and including the narrowed language data. Images best meeting the perception requirements of users can be stored and retrieved accurately at high speed.

The present invention relates to a system, device and a method for objective visual field testing and in particular, to such a system and method in which provides objective chromatic perimetry test or color vision test using a pupillometer.

Disclosed are a method of compensating colors in an image display device for users with color vision deficiency and a device of the same, enabling the users with color vision deficiency to view display images as vividly and naturally as normal users. The method for compensating colors in an image display device includes a step of determining whether a user is partially color blind or normal, and a step of controlling gain values of a plurality of color signals depending upon the user's color perceptivity so as to compensate colors displayed on a screen, if the user is determined to be partially color blind.

A color vision characteristic detection apparatus has a storage section, a generation section, and a presenting section. The storage section stores a basic color chart containing portions colored in colors different from each other. The generation section performs a predetermined conversion processing with respect to the basic color chart to generate an adjusted color chart for one color vision characteristic type so that it is difficult for a person who has a visual characteristic of the one color vision characteristic type to distinguish the adjusted color chart from the basic color chart. The presenting section presents the basic color chart and the adjusted color chart to a user.

The invention discloses an unmanned perception system based on hardware synchronization and a working method thereof. The device comprises at least more than one laser radar, at least more than one color vision camera, at least one grayscale vision camera and at least more than one inertial measurement unit (IMU), and at least more than one hardware synchronization circuit board. The system comprises the laser radars, an industrial computer of a system environment operated by visual software and the like. Hardware synchronization is carried out on the inertial measurement unit, the laser radarand the visual cameras at the same time; the types of synchronous sensors are multiple, the types of obtained data are rich, a high-performance single-chip microcomputer is adopted for processing signals, the time difference generated by hardware is of the microsecond level, and the synchronization precision is high. According to the system, all sensors and a control processing system are integrated on one movable platform, so that a traditional automobile can be conveniently transformed, and the unmanned perception system based on the hardware synchronization can be conveniently installed.

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 an intelligent visual function training method. The intelligent visual function training method comprises the steps that an input module acquires the vision value and the hypochromatopsia degree of a trainee, as well as the ball game name and the training method; a first image generation module, a three-dimensional colour vision training module and a visual training module generate corresponding game scenes respectively according to the information obtained by the input module, and the game scenes are displayed in a display module; a control module compares the information of the trainee obtained by an acquisition module and information of a storage module, controls a second image generation module to generate corresponding game scenes, and also controls the three-dimensional colour vision training module to carry out light conversion, and the results are displayed in the display module, so that the eyes of the trainee are automatically subjected to the vision training following the light movement of a simulation luminous body in the simulation ball-hitting process. The invention further provides an intelligent visual function training instrument which comprises a human body sensor, a racket sensor, a storage, a processor and the display. The method and the instrument have the advantages that the training process is interesting, the training effects are good, and the functions of vision training, body building and entertainment are integrated.

Appliance comprising a housing, wherein a part of said housing is optically transmissive, said optically transmissive part having an exterior surface through which light travelling through the optically transparent part is transmitted, so as to cause the transmitted light to be visible upon viewing the exterior surface. The appliance further comprises a controllable light source assembly, capable of producing light in a variety of colors, and configured to couple produced light into the optically transmissive part of the housing. The appliance also includes a control unit, and a color vision system, configured to optically observe an environment of the appliance, and to output data relating to colors of the observed environment to the control unit. The control unit is configured to control a housing color to be produced by the light source assembly, whereby said housing color is determined in dependence of the data received from the color vision system.

The present invention discloses a control device of luminous lamp group accompanied by music playback which can be used in digital equipment. Said invention includes the following components: central control module, trichromatic luminous lamp group, look-up table, trichromatic luminous lamp control signal generation module and luminance control module. Said invention also provides the concrete function and action of the above-mentioned every component, and also provides the effect and application of said control device.

Disclosed embodiments relate to techniques for color gamut mapping when an input signal transmitting color visual images has a different color gamut than does the output display device. Polynomial rubber-sheet mapping may be used to translate the input color gamut to the output color gamut on a hue-by-hue basis within a three-dimensional perceptual color space. Also, a memory color look-up table may be used to preserve memory colors in the input gamut which are capable of reproduction within the output gamut. By using such techniques alone or in combination, it may be possible to more effectively map an input color gamut to a different output color gamut with improved calorimetric accuracy.

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.

A system for coding images, and more particularly, to a system for compressing images to a reduced number of bits by employing a Discrete Cosine Transform (DCT) in combination with a visual model.

The invention provides a color visual effect device and a color visual effect generation method. The color visual effect device comprises a multi-primary-color light source, a light source drive circuit, a display panel and a panel drive circuit. The light source drive circuit is connected with the multi-primary-color light source, the panel drive circuit is connected with the display panel, the display panel is arranged above the multi-primary-color light source, and the light source drive circuit and the panel drive circuit are connected together. Each primary color of the multi-primary-color light source occupies one time slot, all the primary colors of the multi-primary-color light source are displayed through the same pixel point of the display panel, and all the primary colors of the multi-primary-color light source are arranged in the time sequence and transmitted to the display panel through the multi-primary-color light source for color synthesis. The structure of a traditional color liquid crystal display screen is changed, a color film filter is omitted, a light source is changed into the multi-primary-color light source, color synthesis is achieved in a time division mode, the display resolution ratio is greatly increased, and the complexity and the cost of production and the process are reduced.

A color vision characteristic detection apparatus has a storage section, a generation section, and a presenting section. The storage section stores a basic color chart containing portions colored in colors different from each other. The generation section performs a predetermined conversion processing with respect to the basic color chart to generate an adjusted color chart for one color vision characteristic type so that it is difficult for a person who has a visual characteristic of the one color vision characteristic type to distinguish the adjusted color chart from the basic color chart. The presenting section presents the basic color chart and the adjusted color chart to a user.

The present invention discloses an autoamtic quantitative test system of color visual discriminatory acuity. Said system comprises main computer PC machine, color CRT display, lower jaw support, special-purpose respose keyboard, photoelectric scaling system and printer, and the main computer PC machine is respectively connected with color CRT display on central position of whose screen a color irritation test block formed from four 1 degree X 1 degree small squares can be formed, special-purpose response keyboard, printer and photoelectric scaling system by means of RS-232 serial interface, and the lower jaw support is placed in the front of colour CRT display. Said invention utilizes the computer-controlled colour CRT analogous color simulation display technique and other test measures to test color discrimination of visual sense of human eye.

The invention provides a press operator target for facilitating visual verification of colour accuracy in printed colour matter against an ideal colour proof. The invention also includes so-called Light / Master / Dark (“LMD”) standards for visually accessing colour variation that is acceptable in a particular print design and to aid a press operator in decision making in order to achieve a better proof to print match. Finally the aforementioned items are assembled into a colour proof assembly, which includes the press operator target, as well as the LMD standards.

A dithering pattern that is generated based on a spatial operation is used for a Bit-Depth Extension (BDE) technique for preventing contouring artifacts in an image displayed by a display having a bit-depth that-is less than the bit-depth of the image. The dithering pattern can be based on achromatic visual model or a spatio-chromatic visual model. The dither pattern is formed by shaping a pseudo-random noise signal by an equivalent noise visual model that is based on an array of pixels. Alternatively, the array of pixels is based on an image, or a determinate array of pixels.

This invention is for directly modulating a beam of photons onto the retinas of patients who have extreme vision impairment or blindness. Its purpose is to supply enough imaging energy to retinal prosthetics implanted in the eye which operate essentially by having light (external to the eye) activating photoreceptors, or photoelectrical material. The invention provides sufficient light amplification and does it logarithmically. While it has sufficient output light power, the output light level still remains at a safe level. Most preferred embodiments of this invention provide balanced biphasic stimulation with no net charge injection into the eye. Both optical and electronic magnification for the image, as for example, using an optical zoom lens, is incorporated. Otherwise, it would not be feasible to zoom in on items of particular interest or necessity. Without proper adjustment, improper threshold amplitudes would obtain, as well as uncomfortable maximum thresholds. Therefore, to adjust for these, a way of proper adjustment for the threshold amplitudes and maximum comfortable thresholds is provided. Furthermore, to the extent that the individual stimulation sites in the retina give different color perceptions, upon stimulation, then colors of the viewed scene is correlated with specific stimulation sites to provide a certain amount of color vision.

A co-punctual center color (such as co-punctual point PTD) is set from a color which cannot be seen or is hardly seen. A gray scale gradation value corresponding to a color difference of the color of the pixel for the co-punctual center color is calculated on pixel unit form the color original image and a gray scale is created. According to this gray scale, a gray scale image or a gradation image of the similar color is created and displayed. Alternatively, a color name of the point specified in the color original image is displayed. By executing the processing by using a camera-equipped mobile telephone, a color-sense abnormal person can identify the color which he / see cannot correctly see and know the color name without feeling any constraint.

An information obtaining method includes (1) presenting a first visual stimulus to a living body, (2) obtaining brain activity data in the primary visual cortex and a color vision related area during presentation of the first visual stimulus, (3) presenting a second visual stimulus different from the first visual stimulus to the living body, (4) obtaining brain activity data in the primary visual cortex and the color vision related area during presentation of the second visual stimulus, and (5) obtaining brain activity information on the basis of the ratio between the brain activity data in the primary visual cortex, obtained in (2), and the brain activity data in the primary visual cortex, obtained in (4), and the ratio between the brain activity data in the color vision related area, obtained in (2), and the brain activity data in the color vision related area, obtained in (4).

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.

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 a system, device and a method for objective visual field testing and in particular, to such a system and method in which provides objective chromatic perimetry test or color vision test using a pupillometer.