2709 results about "Naked eye" patented technology

Gaming chips 30 have an IC tag 34 which is embedded therein, and a special bar code 101 invisible to the naked eye, which is printed thereon. A server calculates the number of gaming chips 30 based on individual information of the IC tag 34 that was read out by a reader 38, based on individual information of the special bar codes 101 read out by a bar code scanner 102, based on weight data acquired at a weighing device 40 and based on image data processed in a camera 103. Further, the server checks a partial number or the total number of gaming chips 30 thus calculated, and outputs the check results from a display or speaker.

The invention discloses a three-dimensional enhancing realizing method for multi-viewpoint free stereo display, which comprises the following steps: 1) stereoscopically shooting a natural scene by using a binocular camera; 2) extracting and matching a characteristic point of an image of a main camera, generating a three-dimensional point cloud picture of the natural scene in real time, and calculating a camera parameter; 3) calculating a depth image corresponding to the image of the main camera, drawing a virtual viewpoint image and a depth image thereof, and performing hollow repairing; 4) utilizing three-dimensional making software to draw a three-dimensional virtual model and utilizing a false-true fusing module to realize the false-true fusing of the multi-viewpoint image; 5) suitably combining multiple paths of false-true fused images; and 6) providing multi-viewpoint stereo display by a 3D display device. According to the method provided by the invention, the binocular camera is used for stereoscopically shooting and the characteristic extracting and matching technique with better instantaneity is adopted, so that no mark is required in the natural scene; the false-true fusing module is used for realizing the illumination consistency and seamless fusing of the false-true scenes; and the multi-user multi-angle naked-eye multi-viewpoint stereo display effect is supplied by the 3D display device.

The present invention realizes a naked eye three-dimensional video image display device that alleviates a jump point. In the naked eye three-dimensional video image display device of the invention, a slit of a parallax barrier is arranged in a zigzag or curved shape and the edge of the slit has a shape of an elliptic arc, so that a moderate view mix is generated to alleviate the jump point. Since a perforated parallax barrier is designed after an area to be viewed on a pixel arrangement surface is determined, the parallax barrier can be appropriately provided with an effect of the viewmix.

In order to produce on the table of a diamond gemstone (7), an information mark which is invisible to the naked eye using a x10 loupe, an ultraviolet laser (1) having a wavelength of 193 nm is used in association with a mask (2) to irradiate the surface of the stone (7) at a fluence of less than 2 J / cm2 per pulse and with not fewer than 100 pulses, in the presence of air which reacts with the diamond (7) and causes the mark to be formed without any darkening which is visible when viewing using a microscope.

The invention discloses a method and device for visualization of layering data. The method and device includes generating a tree data structure in a data set HD according to internal layering relation, generating a fan-shaped structure through a self-adaptive radioactive ring algorithm by each node in layers lower than node threshold in the generated tree data structure, enable each node in layers higher than or equal to the node threshold in the generated tree data structure to generate a sub radioactive ring, namely a necklace ring through a necklace ring algorithm in interaction mode and mapping and displaying the radioactive ring and the necklace ring on a display plane. The method and device resolves the problem that space utilization rate of a central area in the radioactive ring is low, peripheral areas are crowd, and fan area is small and cannot be recognized by naked eyes in the existing visualization method. The method and device achieves the effect that data layering structure is shown to users to the largest extent in limited space and enables the users to obtain detail information on any layer and structure information between layers by means of interaction.

A card embodying the invention includes marks which are randomly formed within a dedicated region of the surface of the card. The randomly formed marks may, for example, include; (a) partial-holes extending a short distance from a surface of the card; (b) through-holes extending between the top and bottom surfaces of the card; (c) burn marks, or (d) ink marks. The marks are of a size and nature such that they are not readily visible to the naked eye. The invention includes illumination apparatus for illuminating the card to reliably sense the optical pattern of the randomly formed marks. In accordance with one aspect of the invention, a reader / writer includes means for generating an array of light to uniformly illuminate the back surface of the card so as to pass light through the through-holes or through the partial holes. In accordance with another aspect of the invention, a reader / writer includes a light source for illuminating the front surface of the card containing the randomly formed marks and projecting the light onto the dedication region of the card at an acute angle and sensing means for capturing the light signals reflected from the random marks while ignoring the light reflected from the portion of the card not containing a mark.

The invention provides an indoor location and navigation method based on LED lighting. Each LED has a programmable ID code, each LED lamp has a different and unique emitting power change mode, a visible data light signal which can be identified by a receiving end is formed, and the programmable ID codes are emitted in the form of time division multiplexing; the receiving end parses the received data light signal, and calculates the received power from different LED lamps; and the initial 3D coordinates of the receiving end are calculated according to a location algorithm, and the initial 3D coordinates are modified through a nonlinear fitting algorithm. The invention correspondingly provides an indoor location and navigation device applied to the method. The brightness change of the LEDs cannot be identified with the naked eye, and thus, an LED lighting system is built. The method can still provide precise location service for users when an individual LED is abnormal. By correcting the coordinates through the nonlinear fitting algorithm, centimeter-level location accuracy is guaranteed.

The present invention provides methods of obtaining panoramic images that appear most natural to the naked eye by executing a mathematically precise image processing operation on a wide-angle image acquired using a wide-angle lens that is rotationally symmetric about an optical axis, and devices using the methods. Imaging systems using this method can be used not only in security surveillance applications for indoor and outdoor environments, but also in diverse areas such as video phones for apartment entrance doors, rear view cameras for vehicles, visual sensors for unmanned aerial vehicles and robots, and broadcasting cameras. Also, it can be used to obtain panoramic photographs using digital cameras.

Invisible information are recorded in the form of pixels invisible to the naked eye and at a print density invisible to the naked eye.

The invention discloses a naked eye 3D virtual reality display system and display method thereof. According to the system and the method, movement information of a player is collected by employing a VR (Virtual Reality) sensing unit; a triggering or control instruction is issued to a three-dimensional rendering unit, thereby triggering or controlling the three-dimensional virtual scene of the three-dimensional rendering unit; the three-dimensional rendering unit renders a binocular image and sends the image to a VR display unit; therefore, the player has immersive virtual reality experience; moreover, through adoption of a practical stereo camera array and through combination of a green screen image matting technology, the player himself / herself is placed in the digital virtual scene, and the player and the virtual scene are displayed in a naked eye 3D display mode; the scene currently experienced by the player can be observed by a spectator without any other auxiliary device in a third angle of view mode; the spectator can manually adjust the watching location and angle of the third angle of view; the spectator can watch the condition generated in the virtual scene according to own interest and can observe and anlayze the whole virtual scene omni-directionally.

Disclosed is a light guiding plate formed with fine recesses and a backlight unit utilizing the same. There are formed on a bottom surface of a transparent acryl resin substrate a number of fine recesses, which are unable to be distinguished with the naked eye, in order to reflect on front surface of the plate a source light introduced through at least one side surface. The fine recesses are formed by means of a sandblasting process. The amount of the fine recesses jetted per unit hour is uniformly maintained. The number of sands collided into unit area per unit hour and impact energy of the sands are higher the further away from the side through the source light is introduced. Accordingly, density, average depth and average size of the recesses are gradually higher the further away from the light introduced side. Also, area, average complexity of the contour of the recesses and average complexity of the surface profile of the recesses are increased. Therefore, as a light getting out of the front surface of the plate is uniformly diffused, a diffusion sheet is not needed in composing a backlight unit for an advertising film or a LCD panel by utilizing the plate.

A visual simulator for a spectacle lens including: a lens design data acquirer that acquires lens design data on design items of a spectacle lens including a prescription for a spectacle wearer's naked eye; a lens designer that designs the spectacle lens based on the lens design data; an original image data acquirer that acquires an original image data for the simulation; an image processor that processes the original image data acquired by the original image data acquirer and generates image data representing an image viewed through a lens processed based on the frame data; a display that comprises a screen that displays the image based on the image data generated by the image processor; a partial enlargement information acquirer that acquires partial enlargement information of a visual field, the partial enlargement information including a distance from a spectacle lens wearer to the screen of the display and a dimension of the screen, wherein a processing mode of the image processor includes: an entire display mode in which the visual field based on the shape data is entirely displayed on the screen of the display; and a partial display mode in which a part of the visual field determined by the distance from the spectacle wearer to the screen of the display and the dimension of the screen acquired by the partial enlargement information acquirer.

The present invention relates to security label (12) for securing or authenticating goods or services or a security document. Currently radio frequency ID cards, having an inductive loop and a microchip containing security information, are used. However, such RF ID cards are expensive to manufacture. Therefore it is proposed to use a security label or document (12) including a terahertz image or tag (14, 15, 76) which may beta hologram. Security information can then be read by reflection or transmission of terahertz radiation which is not visible to the unaided eye. The terahertz image or tag may be covered by a material (66, 68) opaque to visible light, but transparent or transmissive of terahertz wavelengths, making it difficult for potential fraudsters to investigate the terahertz image. A method of making such a security label or document, a security or authentication method and system using terahertz radiation are also disclosed.

A system for detecting an obstruction in the travel of a vent, such as a window glass in an opening of a vehicle, includes a reference element. The reference element is typically coded and either visible or invisible to the naked eye or emits a light signal which extends along at least a part of the perimeter of the opening. A detector, such as a matrix camera, detects the reference element at each point of at least a part of the perimeter of the opening. The system allows detection of an obstruction in the travel of the vent, regardless of variations in light or level of contrast, improving the quality of the detection.

The invention provides a method for generating three-dimensional virtual animation scenes watched through naked eyes, and relates to machining of three-dimensional images with an animation effect. The method comprises the steps of measuring a display space, collecting information of the light environment of the display space, setting up a three-dimensional digital model of the three-dimensional space size of the display space, making virtual objects and cartoons needing to appear, rendering the made virtual objects and cartoons, setting projection in the display space, carrying out final proof-reading, and limiting watch angles and watch distances. The method combines an actual space and a virtual space, so that audiences do not need to wear any auxiliary devices to watch the three-dimensional virtual animation scenes through the naked eyes.

A medical dressing for chest wounds, including a one-way valve that can be covered so as to protect against intrusion of airborne contaminants and to prevent passage of fluids in either direction, and including indicia visible using night vision devices but not visible in visible light to the naked eye in some embodiments. The indicia visible using night vision devices may be included in other medical apparatus, as well, so that the medical dressings or other apparatus can be used effectively during darkness, in combat situations, without being seen by enemy combatants not equipped with night vision devices.

The invention provides a visualized rapid nucleic acid testing method based on a CRISPR-Cas12a system and an application. Specially, a fluorescent or naked eye visualized detection system for detecting target nucleic acid molecules comprises (a) Cas12a protein; (b) sgRNA which leads the Cas12a protein to be specifically bound to the target nucleic acid molecules; and (c) a nucleic acid probe whichcontains a detectable marker, wherein when the nucleic acid probe is cut by a Cas12a protein bypass, a detectable signal is generated. The detection system and method have the advantages of being rapid, sensitive, high in specificity, visualized through naked eyes and suitable for rapid field detection and the like.

The invention discloses a fire occurrence determining method and a fire occurrence determining device based on an unmanned aerial vehicle. The fire occurrence determining method comprises the steps that: the system which mainly consists of the unmanned aerial vehicle (UAV), a remote server and a control system on the ground is adopted, the unmanned aerial vehicle flies to a fire alarm region according to GPS position information of a fire alarm point, shoots a field video image and a thermal infrared image of the alarm point, and sends the field video image and the thermal infrared image to the remote server through a 4G mobile cellular network; the remote server receives data and obtains the real-time field video and thermal infrared image; and a result whether a fire occurs is obtained through naked eye identification or subjecting the thermal infrared image to comparison by means of a classifier. The fire occurrence determining method and the fire occurrence determining device can send out the unmanned aerial vehicle timely after receiving an alarm, save a large amount of manpower and material resources of fire fighting, can master field condition of the fire occurrence point quickly, provide reliable and effective real-time information for carrying out the rescue operation, and compensate for the defect that the existing method of confirming fire occurrence lacks of a method of confirming fire occurrence through aerial photography by means of the unmanned aerial vehicle.

A system and method for obtaining multispectral images of fresh meat at predetermined wavelength bands at a first time, subjecting the images to analysis in an image analysis system comprising a computer programmed to perform such analysis, and outputting a forecast of meat tenderness at a later point in time. Predetermined key wavelength bands are precorrelated with a high degree of prediction of meat tenderness and / or other properties of meat and are used in the multispectral system and method. A system and method for determining the key wavelengths is also disclosed. The multispectral imaging system and method is suitable for use in an industrial setting, such as a meat processing plant. The system and method is useful in a method for determining quality and yield grades at or near the time of imaging in lieu of visual inspection with the unaided human eye, increasing efficiency and objectivity.

Security films that are useful for pharmaceutical packaging. In particular, anti-counterfeiting security films having a luminescent composition on or in a fluoropolymer layer, which luminescent composition luminesces upon the application of ultraviolet radiation in the 200 nm to 300 nm range, in which the luminescent component is optionally and preferably not viewable to the unaided eye. The films are particularly useful for the formation of anti-counterfeiting blister packaging in compliance with FDA regulations.

An apparatus and method for providing confidential viewing of a fundamental image on an image display device utilizing spatial multiplexing image modification, whereby fundamental image components of the fundamental image are spatially multiplexed or combined with appropriately determined inverted image components thereof, and aligned with adjacent display regions / pixels of an image display device so as to neutralize the fundamental image and generate a combined image that appears substantially featureless to the naked eye. The display pixels aligned with the fundamental image components are cross-polarized relative to the adjacent pixels aligned with the inverted image components, thereby providing for extraction of the fundamental image by an authorized viewer wearing appropriate eyewear polarized to correlate with the state of polarization of the pixels aligned with the fundamental image components. Enhanced security may be provided by utilizing a variable polarizer to alter the state of polarization of the respective display regions, or by altering the position of fundamental and inverse image components to align with differently polarized display regions. Extraction of the fundamental image may then be accomplished by using active polarized eyewear synchronized to correlate in polarization with the pixels aligned with the fundamental image components.

The invention discloses transverse wide-visual field tridimensional display method and system based on a spliced light field. The method comprises the steps of: obtaining image sources necessary for aligned observation of different view points in the transverse direction of a tridimensional scene; utilizing a plurality of projection display units to project a planar directional diffuser screen in an alignment manner; and enabling an observer to move along the transverse direction to view different transverse parts of the tridimensional scene spliced by vertical images formed by the aligned projection of different projection display units so as to realize transverse wide-visual field tridimensional display. The system comprises a projection tridimensional display unit, a planar directional diffuser screen and a control computer. The projection unit is structured by pixel region division of a two-dimensional display unit and a corresponding lens and aperture array right ahead, and the planar directional diffuser screen is projected in an alignment manner. The method and system disclosed by the invention have the advantages of being capable of generating a tridimensional image with fine transverse parallax capable of being observed in a wide view field range in the transverse direction. Compared with the single naked eye stereoscopic display, the multi-screen splicing arrangement can expand the view angle and increase the spatial scale and enjoyment range of the tridimensional image.

Provided is a ultra-high-sensitivity assay in which the assay can be made on a commonly used assay apparatus such as an absorptiometer and a plate reader or with naked eyes. The high-sensitivity assay in which the assay can be made on a commonly used assay apparatus or with naked eyes can be provided by combining an enzyme cycling method using thio-NAD(P) as a coenzyme, a labeling enzyme and a substrate for the labeling enzyme optimally, and by amplifying thio-NAD(P)H, which is a signaling substance, exponentially and then quantifying the thio-NAD(P)H colorimetrically.

The invention discloses a portable and fast sample joint inspection device consisting of a sample suction head (1) and a test tube (2) connected with the back end of the sample suction head (1), wherein, the front end of the sample suction head (1) is provided with a tubule suction nozzle (12) provided with a suction port (13) used for sucking samples; the front end of the suction nozzle (12) can be sheathed with a rubber protecting cap (14); the cavity(17) of the suction head is respectively filled from forth to back with the sample of filter material (3) and the sample of water absorbent material (4); a fixation column of test paper (5) is arranged in the test tube (2); one to a plurality of sample test paper strips (6) are fixed on the fixation column of test paper (5); the tail end of the test tube is provided with a seal cover (7) for enclosing the tested waste in the test tube (2) without leakage. When each sample test paper strip (6) enclosed and fixed in the device goes through sample suction for once and the same background detection, a plurality of indexes of the samples can be jointly detected at the same time by naked eyes in a plurality of minutes, therefore, a plurality of sample tests become simpler, safer and faster, and can avoid cross interference. The tested waste remains sealed in the test tube to be more beneficial to avoiding pathogen spreading and iatrogenic infection as well as treating waste materials in an environment protection way.

The invention provides a directive color filter and a naked eye 3D display device. The directive color filter comprises a color filter and a directive functional structure layer. The color filter comprises a plurality of filtering units, and each filtering unit comprises at least three filtering subunits in different colors. The directive functional structure layer comprises a plurality of structure units, and each structure unit is arranged corresponding to one filtering unit. Each structure unit comprises at least three structure subunits. Each structure subunit is arranged corresponding to one filtering subunit. Each structure subunit comprises a plurality of nano diffraction gratings. The period and angles of orientation of the nano diffraction gratings in the same structure subunit are different, so that light in two colors would not be emitted by the same nano diffraction grating, and a light crosstalk problem would not occur. The directive color filter is easy to realize technically, so the multi-view naked eye 3D display device without visual fatigue based on a directive backlight technology can easily have practical applications.

The invention relates to a preparation method for an aspherical vision correction lens with controllable peripheral defocus. The preparation method comprises the following steps: (1) through the checking of human eye retina shape or human naked eye peripheral defocusing amount or human eye glasses-wearing peripheral defocusing amount, calculating and judging the conditions needed by forming myopization defocus of the human eye; (2) according to the conditions obtained by the myopization defocus, forming a distribution solution of refractive power of the vision correction lens changed along with the pore diameter; (3) according to the distribution solution of the refractive power of the vision correction lens, making the vision correction lens, so the refractive power distribution in the peripheral area of the whole eye refractive power formed on the retina is greater than that in the center area after the refractive power of the vision correction lens is attached to the human eye, and forming the myopization defocus before falling on the retina; using an aspheric surface to control the surface shape and curvature radius of an optic zone of the vision correction lens, so that the vision correction lens is evenly changed in the aperture direction according to the stated refractive power peripheral defocusing amount, the refractive power is increased along with the increase of the aperture, so the degree-controllable myopization defocus is provided to the human eye.

The present invention provides a spherical heliostat profile calibration method comprising the steps of placing an artificial light source (34) in the centre of the heliostat with the direction determined for emitting divergent beams that are approximately homocentric with the heliostat to cover the aperture of the heliostat; observing the light source imaging position on the reflecting surface of the heliostat through eyes or a telescope (36) using a position near the light source as an observing position; adjusting the incline angle of a sub-mirror (1) relative to a reference plane (32) by using a supporting mechanism of the sub-mirror to a proper angle at which the light source imaging occurs in the center area of the sub-mirror; adjusting all the incline angles of the sub-mirrors according to the prior step to complete the surface shape calibration of the whole heliostat. The method having no special requirement of surface planeness and profile error in the present invention is simple to perform and has a high efficiency. And heliostats can also be adjusted and calibrated at night by using the method.

The invention relates to maritime alarm equipment for personal use. Aiming at the technical problem of the prior laggard rescue means of implementers, the invention provides maritime personal emergency position indicating tracking equipment and a positioning method thereof so as to conveniently discover people falling in water by rescuers and improve the success rate of rescue. The maritime personal emergency position indicating tracking equipment is characterized in that: the maritime personal emergent position indicating tracking equipment mainly comprises a personal portable beacon set anda ship / airplane-borne search machine, wherein the search machine sends a query signal, and after receiving the query signal, the beacon set carried by the people falling in the water sends a radio beacon signal so as to provide the azimuth and distance information of the person falling in the water for the rescuers; the rescuers determine the position of the person falling in the water quickly through the azimuth and distance of the beacon signal measured by the search machine so as to improve the success rate of the rescue greatly, speed up the rescue process and change the current situations of long time and poor effect of the search and rescue due to naked-eye observation.