30 results about "Sight-reading" patented technology

The present invention is a novel apparatus for use as a training aid for devices that are aimed using line-of-sight methods, such as firearms and telescopes. A need exists for a removable aid that will improve the various aspects of targeting and device handling by the trainee. The present invention satisfies this need by placing a small, high-resolution electronic display within the line-of-sight of a device and adding other electronics to drive the display. The display and the additional electronics are used to provide many functions that are useful in training.

A color measurement instrument that is capable of both spot reading and strip reading. The instrument includes a handheld unit and a docking unit. When removed from the docking unit, the handheld unit is used for spot reading. When docked in the docking unit, the handheld unit and the docking unit are used together for strip reading. The handheld unit includes a self-storing target that is deployed for spot reading and stored for strip reading. The handheld unit also includes a self-storing calibration plaque that is deployed for calibration and stored otherwise. When docked, the handheld unit teeters on the docking unit between a normally closed position and a manually selectable open position to accommodate a variety of sample thicknesses.

A method for emulating prerecorded images may comprise acquiring at least one organ timing signal reading representing an activity state of an organ with at least one organ timing signal detector, acquiring a plurality of images with a medical imaging system, associating each of the plurality of images with an organ timing signal reading, removing any of the organ timing signal readings and associated images that are not representative of a normal organ configuration, and outputting a sequence of the representative images for a display.

The invention provides an apparatus and method for notating music for a harmonica. The apparatus incorporates a vertical staff in which vertical lines or tracks represent individual notes, the length of which represents duration of the note, and the horizontal location represents the physical location of the corresponding hole in a harmonica. The invention provides a rapid means of learning to play a harmonica and, for experienced players, provides a means for sight reading a new piece of music. The invention further provides ways of representing the dynamics of both pitch and loudness and a convenient way to manually transcribe musical selection for archival purposes.

The present invention discloses a method for fast reading and precise interpolation of mass target characteristic data, including: 1. Calculating the bi-station radar scattering cross section of the target, and storing the first-order and second-order derivative information of the radar scattering cross section at the frequency endpoint at the same time; 2. 1. Determine and read the useful bistatic radar cross-section range according to the target state; 3. Interpolate the incident elevation angle, incident azimuth angle, scattering pitch angle and scattering azimuth; 4. Organize the data format of the bistatic radar cross-section ; 5. Send the organized bi-station data into the graphics processing unit for one-dimensional frequency interpolation; 6. Determine whether the interpolation of the incident elevation angle, incident azimuth angle, scattering elevation angle, and scattering azimuth angle has been completed; 7. The interpolated data generated by the graphics processing unit is passed back to the central processing unit. The invention adopts the Lagrangian interpolation method to realize fast reading of massive target characteristic data, avoid large-scale reading of data, improve interpolation precision, and save repeated calculations.

The invention provides a device and method for achieving eye-tracking of virtual display screens by means of crossratio invariability. The device comprises the virtual display screens. Four auxiliary light sources and one camera are arranged for each virtual display screen, wherein the four auxiliary light sources are located on the left side and right side of the display screen to form a rectangle, and the camera is located below the display screen. The method comprises the steps of acquiring the pupil center and light spot position of an image through an image processing module, estimating the positions of the light sources in the screens through calibration by means of an eye-tracking module, and calculating a viewpoint according to the light sources, the pupil center and the light spot position. Based on the one camera and four light sources for each display screen, the positions of the virtual light sources in the virtual display screens are estimated through calibration, and eye-tracking is achieved by means of crossratio invariability.

The invention relates to a method for measuring longitudinal distances of sight of human eyes. The method includes particular steps of 1, creating an eccentric photographic measuring device comprising a camera, an infrared light source, an infrared filter lens, a telescope, a human face support, an infrared cut-off filter and the like; 2, detecting pupil boundaries, acquiring pupil regions by means of processing by the aid of run algorithms and acquiring boundaries by means of equation fitting; 3, computing the internal brightness distribution of pupils, and computing ratios of certain longitudinal lengths of the pupil regions to the lengths of integral longitudinal axes; 4, measuring longitudinal distances, acquiring the longitudinal distances of the sight by the aid of pre-measurement calibration parameters and current brightness distribution conditions of the pupils by means of computing. Average values of gray values of the integral pupil regions are used as threshold values, and the certain longitudinal lengths of the pupil regions are larger than the threshold values. The method has the advantages that information of the longitudinal distances can be obtained during sight tracking, accordingly, the sight can be truly three-dimensionally tracked, and the method further can be used for improving the precision of the traditional two-dimensional sight tracking systems; the method is low in computational complexity, and quick measuring and real-time tracking effects can be realized.

The invention discloses a free-space head-wearing eye-tracking system. The free-space head-wearing eye-tracking system comprises a head-wearing video collection device, a unit for evaluating the binocular optic axis through stereoscopic vision and a binocular vision and fixation point evaluation unit; the head-wearing video collection device collects four ways of near-infrared eye video and one way of scene video simultaneously, and the four ways of the near-infrared eye video comprise two ways of the near-infrared eye video of the left eye of a wearer who wears the head-wearing video collection device and two ways of the near-infrared eye video of the right eye of the wearer who wears the head-wearing video collection device; coordinates of pupils of both eyes and cornea center are evaluated directly through a stereoscopic vision method, and a binocular optic axis straight line equation is calculated; a binocular visual axis straight line equation is evaluated according to an eyeball Kappa angle and the binocular optic axis straight line equation, a fixation point coordinate is calculated, the position of a fixation point in the scene video is mapped and marked, and the Kappa angle is a fixed included angle between the optic axis and the visual axis of each eyeball.

The invention relates to a sighting method of a sighting telescope at different initial velocities. The sighting telescope is placed on a crossbow or a gun barrel, an object which is a certain distance away from the sighting telescope is selected to serve as a sighting object, and an image of the object is arranged on a reticle of the sighting telescope through the sighting telescope and is located at the position, at a sighting position matched with the object in distance, on the reticle; and the certain initial velocities are set, a multiple adjusting twist ring is adjusted to adjust the image of the object on the reticle until the image of the object on the reticle can right guarantee the shooting accuracy, and then sighting is completed. The sighting method has the beneficial effects that the manners that the multiple adjusting twist ring is adopted and the sighting point of the reticle is used in a matched manner to achieve sighting are adopted to adapt to the different initial velocities, the relatively-accurate sighting effect is achieved through the multiple adjusting twist ring, the method is unique, and operation is easy.

The purpose of my invention / method is to create good keyboard sight reading musicians. By marking skips between notes according to the method set forth in my detailed description and then playing them on the keyboard, the musician is able to develop good sight reading skills. The difference between my method and others is that my method uses letter names of notes only to find the beginning location of a piece of music and this is done through the use of a note / keyboard chart. All other reading is done by use of spacing and direction through recognition of skips on the staff. It is essential to the success of my method that letter names NOT be used because they interfere with the spatial and directional understanding of notes needed to sight read well. My method is useful at all levels because it is structured, concrete, and cumulative.