159 results about "Checkerboard pattern" patented technology

A system mounted on a vehicle for performing vehicle control applications and driver warning applications, the system including a camera configured to acquire a plurality of images of the environment in front of the camera. The camera includes a filter wherein the filter is installed at the focal plane of the camera and wherein designated portions of the filter transmit selective light wavelength. The preferred filter has a checkerboard pattern. The system further including an image processor capable of analyzing in real time a plurality of respective image sequences acquired from at least one of the portions of the filter and is capable of detecting yellow lane markings on a concrete road surface.

A solid-state imaging device includes a color filter unit disposed on a pixel array unit including pixels two-dimensionally arranged in a matrix and a conversion processing unit disposed on a substrate having the pixel array unit thereon. The color filter unit has a color arrangement in which a color serving as a primary component of a luminance signal is arranged in a checkerboard pattern and a plurality of colors serving as color information components are arranged in the other area of the checkerboard pattern. The conversion processing unit converts signals that are output from the pixels of the pixel array unit and that correspond to the color arrangement of the color filter unit into signals that correspond to a Bayer arrangement and outputs the converted signals.

Circuits, systems and techniques for testing a One-Time Programmable (OTP) memory are disclosed. An extra OTP bit can be provided as a test sample to be programmed. The programmed extra OTP bit can be read with any virgin cells in the OTP memory alternatively to generate a stream of logic 0 and logic 1 data so that every row or column path can be tested and the outcome can be observed in a pseudo-checkerboard pattern or other predetermined pattern. By carefully setting control signals, checkerboard-like pattern can be generated without actual programming any OTP cells in the memory array.

The present invention relates to a high precision method, model and apparatus for calibrating, determining the rotation of the lens scope around its symmetry axis, updating the projection model accordingly, and correcting the image radial distortion in real-time using parallel processing for best image quality.

The solution provided herein relies on a complete geometric calibration of optical devices, such as cameras commonly used in medicine and in industry in general, and subsequent rendering of perspective correct image in real-time. The calibration consists on the determination of the parameters of a suitable mapping function that assigns each pixel to the 3D direction of the corresponding incident light. The practical implementation of such solution is very straightforward, requiring the camera to capture only a single view of a readily available calibration target, that may be assembled inside a specially designed calibration apparatus, and a computer implemented processing pipeline that runs in real time using the parallel execution capabilities of the computational platform.

This invention provides a system and method for automatic (non-manual) calibration of one or more cameras employs a tessellating calibration plate having a checkerboard tile pattern and a plurality of 2D codes embedded within the checkerboard pattern. Each 2D code encodes the (X,Y) coordinates that identify tile calibration feature locations in the pattern, and the remaining, surrounding tiles allow measurement of the corner positions as calibration features. One or more vision system camera(s) can be calibrated to a single coordinate system automatically. During calibration, an image of at least a portion of a calibration plate is acquired, the encoded data is decoded for at least one 2D code within the field of view of each camera and then the position of the field of view is determined on the calibration plate for each camera using the 2D code data and the checkerboard tile pattern.

A full color complementary metal oxide semiconductor (CMOS) imaging circuit is provided. The imaging circuit comprises an array of photodiodes including a plurality of pixel groups. Each pixel group supplies 3 electrical color signals, corresponding to 3 detectable colors. The circuit also includes a color filter array overlying the photodiode array employing less than 3 separate filter colors. Each pixel group may be enabled as a dual-pixel including a single photodiode (PD) to supply a first color signal and stacked PDs to supply a second and third color signal. In one aspect, the color filter array employs 1 filter color per pixel group. In another aspect, the color filter array employees 2 filter colors per pixel group. In either aspect, the color filter array forms a checkerboard pattern of color filter pixels. For example, a magenta color filter may overlie the stacked PDs of each dual-pixel, to name one variation.

An eye mask or face mask incorporating sources of spatially alternating yet static magnetic fields provides magneto-therapy to the eyes and/or face. In one embodiment, an eye mask is provided that has an opaque eye plate and opaque rearwardly projecting cushion about its perimeter. A sheet of alternating magnetic material provides alternating magnetic fields when travel is made in any direction. The eye mask may be attached to the face by elastic straps or other means which may be adjusted for comfort. The perimeter cushion serves to hold the eye mask away from the eyes and projecting eyelashes of the wearer so that greater comfort is achieved. The opaque nature of both the eye plate and the cushion serves to keep light out, allowing the eyes to enjoy a dark environment, especially appropriate for sleep. The eye mask may be worn during lengthy periods of repose such as sleeping. In an alternative embodiment, a face mask incorporating alternating magnetic field forces may have optional eye apertures as well as nose and mouth apertures. Elastic straps serve to hold the face mask to the wearer's face. Alternative embodiments of sources of alternating magnetic fields may be achieved through the use of magnets in a triangular or square checkerboard pattern or alternating patterns of circle-centered toroids having alternating magnetic fields.

A microlens array with reduced or no empty space between individual microlenses and a method for forming the same. The microlens array is formed by patterning a first set of microlens precursors in a checkerboard pattern on a substrate. The first set of microlens precursors is reflowed and cured into first microlenses impervious to subsequent reflows. Then, a second set of microlens precursors is patterned in spaces among the first microlenses, reflowed and cured into second microlenses. The reflows and cures can be conducted under different conditions, and the microlenses may be differently sized. The conditions of the reflows can be chosen to ensure that the focal lengths of microlenses are optimized for maximum sensor signal.

An apparatus and method are provided for accurately recording measurements of a window and producing accurate window treatments. A reference strip is provided having measurement indicia thereon, such as a checkerboard pattern of squares of predetermined sizes. The reference strip may be placed proximate a window and photographed. The size of the window may be accurately determined from the resulting photograph using the associated reference strip. The window may also be measured and the measurements stored as biographic data and associated with the photograph to form an accurate and verifiable window biography. The biography may be provided to another party, such as a treatment manufacturer, who verifies the measurements of the biographic data using photograph and produces a suitable window treatment according to the measurements.

Techniques are disclosed herein for programming memory arrays to achieve high program/erase cycle endurance. In some aspects, only selected word lines (WL) are programmed with other WLs remaining unprogrammed. As an example, only the even word lines are programmed with the odd WLs left unprogrammed. After all of the even word lines are programmed and the data block is to be programmed with new data, the block is erased. Later, only the odd word lines are programmed. The data may be transferred to a block that stores multiple bit per memory cell prior to the erase. In one aspect, the data is programmed in a checkerboard pattern with some memory cells programmed and others left unprogrammed. Later, after erasing the data, the previously unprogrammed part of the checkerboard pattern is programmed with remaining cells unprogrammed.

An image sensor includes near-infrared cut filters formed over an array of photosensitive elements in a predetermined pattern. The near-infrared cut filters may be formed over one half of a photosensitive element in a split pixel arrangement, over one half the photosensitive elements in the array, over every other photosensitive element in the array, and/or in a checkerboard pattern.

A multi-band focal plane array architecture operative to detect multiple spectral image. The multi-band focal plane array architecture has an integrated readout circuit, a plurality of first detectors integrated in the readout circuit and a plurality of second detectors deposited on the readout circuit. Preferably, the first detectors are operative to detect visible signals and the second detectors are operative to detect infrared signals. The first and second detectors are arranged in a checkerboard pattern, in alternate rows or columns, or at least partially overlapped with each other to realize simultaneous detection in two different wavelength bands. The architecture may also have an additional integrated readout circuit flip-chip bonded to the integrated readout circuit. By forming a plurality of third detectors on the additional integrated readout circuit, a tri-band focal plane array may be realized. In one embodiment, a dual-band focal plane array architecture by forming two arrays of detectors on two individual integrated readout circuit and flip-chip bonding these two readout circuits.

A two-dimensional silicon controlled rectifier (2DSCR) having the anode and cathode forming a checkerboard pattern. Such a pattern maximizes the anode to cathode contact length (the active area) within a given SCR area, i.e., effectively increasing the SCR width. Increasing the physical SCR area, increases the current handling capabilities of the SCR.

The invention provides a checkerboard pattern type stereo storage rack. A top layer of the checkerboard pattern type stereo storage rack consists of goods storage checks for goods storage and channel checks serving as lifting channels of material carrying devices, all spaces in the vertical direction of the storage checks are goods storage checks, all spaces in the vertical direction of the channel checks are channel checks, and any goods storage check is adjacent to at least one channel check. In work, an automatic trolley runs on the top layer of the storage rack and can linearly walk and move in tracks laid on the top layer of the storage in all directions, a rope used in an inner trolley can be put down when the trolley walks to the position above a designated channel check, and goods can be actively obtained or arranged in any goods storage checks in all direction according to an instrument after the inner trolley is lifted to a designed goods layer along the channels. All articles at all goods storage positions can be separately stored or taken by means of the checkerboard pattern type stereo storage rack, and the checkerboard pattern type stereo storage rack is especially suitable for storage of various one-piece articles and is good in flexibly and very high in space utilization rage and storage efficiency.

A transistor device structured such that the bulk, gate, drain, and source are all accessible from all four edges of the device and such that current distribution is uniform over the device is provided. The transistor is created with a four-metal CMOS process. A bulk connection can be made with Metal 1, which is all around the device. A gate connection can be made with Metal 2, which is all around the device. Additionally, a drain/source connection can be made with Metal 3, which is all around the device. A source/drain connection can be made with Metal 4, which is all around the device. Source/drain connections are made with two or more evenly distributed via stripes to connect the source/drain parts of the transistor fingers. The transistor structure may be used to create an array of transistors for a high power output stage, with the transistors arranged in a checkerboard pattern. The connections of each transistor are automatic by abutting edges of the transistors.

An integrated imaging element for an interferometer generates at least one image that includes multiple interference portions with different relative phase shifts interleaved in a pattern having a high spatial frequency in the image. The interleaved pattern is at least partially determined by the pattern of a high density polarizing array used in the integrated imaging element. In various embodiments, the multiple interference portions are interleaved in a checkerboard pattern across the entire surface of a detector device. As a result, various non-common mode errors present in various interferometers that generate separate non-interleaved images for each relative phase are reduced or eliminated because multiple phase-shifted interference image information for a small region of an object is provided within a small region on the detector device.

The inflatable, pressure alleviating, eggcrate mattress pad is a mattress pad that is placed on top of a conventional mattress. The mattress pad has an eggcrate-shaped surface and separate air channels inflate and deflate alternating air cells at different intervals and pressure levels. The air cells are alternately inflated or deflated in a checkerboard pattern so that as one air cell point is inflated, the adjoining air cell point is deflated. The mattress pad is also equipped with two inflatable wedges on the underside of the mattress pad. One wedge is on each side of the centerline of the mattress pad. When either of the wedges is inflated it will tip one side of the mattress upwards to assist turning over an immobilized patient.

The present invention discloses a solar concentrator reflection mirror shape detection device based on optical imaging. The device comprises a base, a light beam emitter, a transparent board target, a mirror surface adjuster, a fixed board target, an image capture device, a light receiving target and a data processing terminal. The mirror surface adjuster, the fixed board target and the image capture device are installed on the base. A mirror surface to be detected is installed on the mirror surface adjuster, and the light beam emitter is arranged above the mirror surface adjuster. The transparent board target is arranged between the light beam emitter and the mirror surface to be detected. Both the surfaces of the transparent board target and the light receiving target are provided with checkerboard patterns. The light receiving target is arranged above the mirror surface adjuster. The fixed board target is in the visual range of the image capture device. The image capture device is connected to the data processing terminal. According to the device, the mirror surface to be detected can be placed arbitrarily, the installation is convenient, and the application scope is very wide. The invention also discloses a solar concentrator reflection mirror shape detection method based on optical imaging.