2658 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.

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 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.

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.

The present invention discloses a naked eye 3D video system for backing a vehicle and vehicles including the system. The naked eye 3D video system includes: two cameras for being installed on the rear of the vehicle and configured to capture images of the scene behind the vehicle respectively; a processor configured to divide the images captured by the two cameras into image strips in equidistance respectively, and integrate alternatively the divided image strips together into a integrated image in the manner of interleave; and a display device for being installed on the instrument panel of the vehicle, and configured to display the integrated image in the form of three dimensions for a driver to watch with the naked eye. The above naked eye 3D video system for backing a vehicle provided by the present invention can make the driver see clearly any obstacle in the scene behind the vehicle and understand spatial distribution information between the vehicle and the obstacle.

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.

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 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.

The invention provides a method of directly using eyes to qualitatively detect Cu<2+> in a solution. The method comprises the following steps: terminal alkynyl functionalized mercaptan and terminal azido functionalized mercaptan are synthesized respectively; sodium citrate is used as a stabilizer to prepare gold nano-particles with the particle size of 14 nanometers; monomolecular layers of which the tail ends are provided with acetylene linkage and azide groups are self-assembled and formed on the surfaces of the gold nano-particles respectively by a ligand exchange method; the gold nano-particles subjected to two types of surface modification are mixed and added with blue vitriod and reducing agent; Cu(I) formed through reduction is taken as a catalyst, so as to allow the acetylene linkage to have cyclization reaction with the azide groups and cause the gold nano-particles to be accumulated; and the Cu<2+> in the solution is detected by observing the changes of the color and precipitation phenomenon of the gold nano-particles through naked eyes. The method can detect the existence of the Cu<2+> in a mixed solution with a plurality of metal cations. The method is characterized in good function of detecting and identifying ions, obvious phenomenon and simple operation.

The invention relates to a custom-pressure expandable naked eye packer applied to the technical field of fracture and acidulation oil and gas wells. The lower end of an upper joint is connected with a central tube; the lower end of the central tube is connected with a lower joint, a sealing mechanism is sleeved on the central tube; in the sealing mechanism, an upper connector and a lower connector are respectively vulcanized on the inner walls of both ends of a rubber tube; in a setting mechanism: an upper circular hook cap is sleeved on the outer wall of the lower end of the upper joint; thelower end of the upper circular hook cap is connected with the upper end of a hydraulic cylinder; a circular space between the hydraulic cylinder and the central tube is internally provided with a circular limit ring and a circular setting piston; the lower end of the hydraulic cylinder is connected with an overdraught cap and provided with a uniflow valve; in a decapsulating mechanism, the innerwall of the lower end of a pushing cap is sleeved on the central tube, and the lower end thread of the pushing cap is connected with a lower circular hook cap; and the inner wall of the lower circular hook cap is sleeved on the central tube and fixed with the central tube through a decapsulating pin. The invention has the advantages of meeting the modification requirements of the naked eye oil and gas well on monolayer fracturing and acidified delamination, preventing the rubber tube from expanding unlimitedly in the naked eye and taking the action of protecting the rubber tube.

The invention discloses an integral imaging naked eye three-dimensional autostereoscopic LED (light emitting diode) display system and a display screen thereof. The display system comprises a computer, an integral imaging naked eye three-dimensional autostereoscopic LED display screen connected with the computer, and a camera array which is used for acquiring image element array generated by an image element for the computer, wherein the image element array is displayed in the LED display screen through the computer. The LED display screen comprises a plurality of image units which are in array assembly together; the image unit comprises a planoconvex lens, a light blocking membrane arranged at the periphery of the planoconvex lens, and a plurality of LED pixel lamps; one surface of the planoconvex lens is a plane, and the other surface is a convex surface; the LED pixel lamps are arranged on the plane, and the lighting center of the LED pixel lamps is positioned on a focal plane of the planoconvex lens. By the integral imaging naked eye three-dimensional autostereoscopic LED display screen adopting the technical scheme, panorama three-dimensional imaging technology is perfectly combined with the LED display system through integral imaging, a typoscope is unnecessary; the viewing distance is more flexible, and the crosstalk degree is little.

The invention relates to a naked eye free three-dimensional displaying technology, which arms at synthetizing corresponding three-dimensional images by meeting following requirements: 1, an included angle between surface-mounting direction of grating and the vertical direction is at an arbitrary value; and 2, the technology is suitable for a parallax barrier mode and a lens cylindrical surface mode, and simultaneously is capable of being applied to rectify angle error generated by grating surface-mounting. The technical scheme adopted by the synthetizing algorithm based on naked eye three dimensional displaying technology comprises the following steps: setting a dot pitch of a displayer as delta, a resolution ratio as W*H, a grating pitch as d, an inclination angle as alpha, and viewpoints as N, thus the initial arranged positions of sub-pixels of each row are determined to be consistent with initial positions of subsamplings: delta h equals to 3h*tan alpha equivalent to N (2); circulating for H times with row serving as a unit, and finally generating a three-dimensional composite image. The synthetizing algorithm based on naked eye three-dimensional displaying technology is mainly applied to free three-dimensional displaying.