261 results about "Projection space" patented technology

A fastening element capable of being attached to a panel by deforming the panel is disclosed. A barrel portion is tubular with an open free end and has an axis defining a circumference. A radial flange portion is integral with the tubular barrel portion opposite the free end and defines a circumferential surface. The radial flange portion includes a plurality of projections spaced apart and extending outwardly from the circumferential surface. Each of the projections defines at least one wall generally perpendicular to the circumference about the axis of the barrel portion.

A system (100) and method (160) for activating a touchless control is provided. The method can include detecting (162) a movement of a finger in a touchless sensing field, identifying (164) an activation cue in response to the finger movement, and activating (166) a touchless control of an object in response the activation cue. The method can include focusing the touchless sensing field (210) to produce a touchless projection space (220). An activation cue can be a positioning of a finger (302) within a bounded region (304) of the touchless projection space for a pre-determined amount of time. In one arrangement, cursor (124) navigation and control can be provided in accordance with touchless finger movements.

A tray system composed of a vertical stack of trays especially adapted to contain, and protect surgical instruments being carried from a sterilizer to an operating site. The trays may have various heights and be arranged in any order in the stack. Each tray includes a plurality of latches, each latch having an arm swingably mounted to the tray and terminated by a projection spaced a selected distance D1 above the tray rim or top when the latch is swung to its latching position. Each tray also includes a corresponding plurality of latching surfaces located under the latches on that tray. The distance D2 between the seating surfaces and latching surfaces of each tray corresponds substantially to the distance D1 of that tray. This enables the latch arms of each tray to be latched to the latching surfaces of an overlying tray in the stack or to a cover so as to form a closed compact transportable package. Different latch embodiments for securing the trays together are also disclosed.

The method of interference cancellation in a CDMA wireless communication system comprises receiving an incident digital signal containing a user signal transmitted on a CDMA user physical channel and an interfering signal, projecting said incident digital signal onto a projection space orthogonal to the space containing said interfering signal, filtering said projected signal with a filter matched to the CDMA user physical channel for detecting the data contained in said user signal.

Disclosed are a variety of methods and computer systems for use in the analysis of gene and protein expression data. Also disclosed are methods for the definition of the cellular state of cells and tissues from multidimensional physiological data such as those obtained from gene expression measurements with DNA microarrays. A variety of classification methods can be applied to expression data to achieve this goal. Demonstrated is the application of several statistical tools including Wilks' lambda ratio of within-group to total variance, Fisher Discriminant Analysis, and the misclassification error rate to the identification of discriminating genes and the overall classification of expression data. Examples from several different cases demonstrate the ability of the method to produce well-separated groups in the projection space representing distinct physiological states. The method can be augmented and is useful in disease diagnosis, drug screening and bioprocessing applications.

The present invention provides a method of binocular depth perception based on active structured light, adopting a coded pattern projector to project a coded pattern for structured light coding of the projective space or target object (characteristic calibration), then obtaining the coded pattern by means of two cameras on the same baseline and respectively located symmetrically on both sides of the coded pattern projector, after preprocessing and projection shadow detection, estimating the block matching movement in two modes based on the image blocks (binocular block matching and automatic matching) to obtain the offset of the optimal matching block, finally working out the depth value according to the formula for depth calculation and compensating the depth of the projection shadows to generate high-resolution and high-precision depth information.

The invention relates to an image rendering method. The image rendering method includes the following steps that a depth map, a normal map and a color map of an image needing to be rendered are obtained; the coordinates and the depth values in the projection space and the coordinates and the normal vectors in the world space of all points in the image needing to be rendered are obtained; according to the color map, color information of all the points in the image needing to be rendered is obtained; illumination calculation is carried out to obtain pixel colors of all the points in the image needing to be rendered; pixels are output to obtain the rendered image. The invention further relates to an image rendering device used for achieving the method. Compared with the prior art, the two-dimensional rendering speed and the three-dimensional rendering effect are combined to achieve the effects that 2D face pictures are adopted for displaying appearances of objects, and 3D shielding and lighting effects are adopted for scenes, and therefore the two-dimensional rendering speed and the three-dimensional rendering effect can be achieved.

The invention discloses a three-dimensional position reconstructing method based on an ISAR (inverse synthetic aperture radar) image sequence for a scattering point, which comprises the following four links: a target ISAR image gives the distribution information of a target strong scattering point in a radial direction and a transverse direction based on a distance-Doppler high resolution basic principle; data correlation gives a corresponding relationship between two-dimensional projection points in the ISAR image sequence and is realized by utilizing a flight path initialization method through extracting the one-dimensional radial distance information of all the scattering points in an image sequence; an observing matrix is obtained through the following steps: obtaining a target ISAR image sequence through a period of time of sampling, and after the data correlation, and combining the two-dimensional position coordinates of all the corresponding projection points in a sequence to form the observing matrix, so as to form three-dimensional reconstructed known information; and a position matrix is solved through the following step: solving the optimal estimation of a three-dimensional position matrix of a target scattering point from a subspace through carrying out singular value decomposition on the observing matrix and by utilizing a rank theory and using the orthogonality of a projection space as a constraint condition, so as to obtain a target three-dimensional reconstructed image.

The coupling apparatus for structural members includes a paired couplers for coupling structural members with each other, and each coupler includes a cylindrical main body, engaging projections spaced apart from each other at predetermined intervals in a circumferential direction at an end of the body and projecting along the center line of the body, and engaging hooks projecting in one circumferential direction at the projecting end portions of the projections. At least one coupler further includes a coupling direction changing mechanism which couples the at least one coupler with a predetermined position of a structural member corresponding thereto so that the center line of the body of the at least one coupler can be orientated in a desired direction.

A light guide member (120) includes a columnar main body (130) of a predetermined length, which is made of a transparent material and has a substantially uniform cross section. A first end (121) and a second end are provided at respective ends of the main body (130), and LED elements (200) are arranged to face the first end (121) and the second, respectively. The main body(130) includes a smooth mirror circumferential surface formed with a plurality of recesses (131) or projections spaced from each other in the longitudinal direction and arranged within a predetermined range in the circumferential direction. Due to the recesses or projections, throughout the length of the main body (130) , light emitted from the LED elements (200) and introduced into the main body (130) through each of the first end (121) and the second end is emitted from a region of the circumferential surface of the main body (130) which faces the range formed with the recesses (131) or the projections.

Projection data acquired with an x-ray CT system is filtered using a bilateral filter to reduce image noise and enable the acquisition at lower x-ray dose without the loss of image diagnostic quality. The bilateral filtering is performed before image reconstruction by producing a noise equivalent data set from the acquired projection data and then converting the bilateral filtered values back to a projection data set suitable for image reconstruction.

The invention discloses a method, a device and a system for sensing depth of symbol array surface structured light. The method comprises the following steps: using a laser pattern projector for projecting a coding pattern composed of symbol arrays to a target object or a projection space; using an image sensor for acquiring and obtaining a continuous input symbol coding pattern sequence, firstly decoding an input symbol coding pattern and then performing symbol matching calculation on a symbol-identified input symbol decoding pattern and a distance-known reference symbol decoding pattern to obtain an optical parallax value, wherein a decoding process comprises pretreatment, symbol location, symbol identification and symbol correction; generating depth point cloud information of the target object or the projection space presented in grid forms in combination with a depth calculation formula. The method, the device and the system disclosed by the invention can be used for rapidly acquiring high-resolution and high-precision depth information of the target object or the projection space in a dynamic scene and providing convenience for implanting or embedding a module mode into intelligent equipment so as to realize three-dimensional modeling, three-dimensional map generation and the like.

The invention discloses a multi-projector combined display based feedback brightness correction method, belonging to the field of multi-projector combined display based large-screen high-resolution display technologies. The multi-projector combined display based feedback brightness correction method is characterized by being realized in a closed-loop feedback brightness correction system consisting of a projector array, a digital camera, a server and a client computer, wherein the server obtains grids for geometry correction through the relation between a characteristic point image and characteristic points of a projection space, sends an initial template to a client, and circularly performs the process of brightness decay, projecting, image acquisition and template updating to obtain a template with corrected brightness; and the client performs geometry correction and brightness correction for every image transmitted by the server so as to obtain a seamlessly spliced big picture on a large screen. The combined display based feedback brightness correction method has the advantages of simpleness for operation and natural picture.

Air vehicles and associated aerodynamic structures are provided which include ridged solar panels to both reduce the drag and increase the solar energy harvested by the solar panel. The air vehicle may include an airframe and a solar panel carried by the airframe and defining an exterior surface thereof. The solar panel may include a plurality of ridged structures extending in a lengthwise direction. The ridged structures may be arranged such that a majority of the airflow over the exterior surface flows in the lengthwise direction. The plurality of ridged structures may include a plurality of lengthwise extending projections spaced about by respective valleys.

The invention provides an image processing method for detecting a similar round by using improved hough transformation. The method comprises the following seven steps of: preprocessing an image, extracting an edge and filtering out noises, weighing along a gradient direction and projecting the hough transformation, performing low-pass smooth filtering on a projection space, contracting and binaryzing, positioning a circle center and estimating a radius. Compared with the conventional method for detecting the round by using the hough transformation, the method has the advantages that: on the one hand, the requirement of an algorithm on a memory is reduced and the algorithm efficiency is improved; on the other hand, the performance of the algorithm for detecting irregular similar round objects is improved; meanwhile, the detection precision of the algorithm under the condition of a larger variation region of the round radius is enhanced.

The invention discloses a SAR image target identification method based on authentication non-linear dictionary learning. The SAR image target identification method is mainly used for solving the problem of the prior art of low identification precision. The SAR image target identification method is characterized in that 1, a training set SAR amplitude image random face characteristic is extracted, and is used as a training sample, and is mapped to a projection space in a non-linear way; 2, an authentication code matrix is built according to the category number of the training sample; 3, an authentication characteristic training linear SVM classifier is acquired by using the authentication non-linear dictionary learning; 4, a to-be-tested SAM amplitude image random face characteristic is extracted, and is used as a testing sample, and is mapped to the projection space; 5, trained dictionaries are renormalized, and the sparsity of the testing sample, which is acquired by using a KOMP method, is used to express a vector; 6, the authentication characteristic of the testing sample is extracted, and is input in the trained SVM classifier, and then the category of the target in the to-be-tested SAM amplitude image is acquired. The SAR image target identification method is advantageous in that the precision of the target identification is improved, and the SAR image target identification method is used for the classification identification of the target in the SAR image.

A multipurpose projector is provided with a fiber bundle including a plurality of cores fixedly arranged on an input plane and an output plane, laser beam sources for emitting laser beams having directivities, an optical guide unit for modulating the laser beams emitted from the laser beam sources and guiding the modulated laser beams to the input plane of the fiber bundle, a projection lens for enlarging and projecting the laser beams emerging from the output plane of the fiber bundle to a display space, and a projection angle adjusting mechanism disposed on the side of the output plane of the fiber bundle for adjusting projection angles of the laser beams projected from the projection lens. Thus, the projector can have its projection space freely operated and enlarged to extend its application not only to image display, but also to illumination and decoration with colored light.

There is provided a pedestrian protection air bag system M1 in which air bags accommodated on a cowl each have a recessed portion which avoids a hinge mechanism and project from lateral side edges of a lower surface of a hood panel at a rear end thereof so as to cover front sides of front pillars. The hood panel is configured to be raised on a rear end side thereof so as to form a projection space for the air bags between the cowl and the rear end of the hood panel, while when in normal use, the hood panel is made to be opened upwards at a front end side thereof by means of the hinge mechanisms provided near the left and right edges at the rear end thereof. The hinge mechanisms, cases which cover the folded air bags and actuators for raising the hood panel are provided sequentially in that order towards the front on the lateral side edge of the hood panel at the rear end thereof.

The invention relates to distortion and perspective correction of vector projection display. A method to represent graphical images upon a transparent windscreen head up display of a vehicle describing an operational environment for the vehicle includes monitoring data describing critical information in the operational environment for the vehicle, monitoring a location of a viewpoint of an operator of the vehicle, determining a desired graphic to represent the critical information in a viewing space based upon the data and the viewpoint, transforming the desired graphic in the viewing space into a projected graphic in a projection space defined by the surface of the windscreen, transforming the projected graphic in the projection space into patterns of projected light in a projector space, and generating commands to a graphics projection system based upon the patterns of projected light.

The invention discloses a full-network low-dose CT imaging method and a device based on a convolution residual network. Firstly, the method obtains a plurality of sets of corresponding CT original projection data under low-dose and normal-dose. Secondly, a convolution residual network (CNN1) is established in the projection space, which inputs low dose CT projection data and outputs processed datato reduce the noise and artifacts in low dose CT projection data and improve the signal-to-noise ratio. Then, the projection data is reconstructed into the image space by FBP based on Ramp filter kernel, and the image space is reprocessed based on convolution residual network (CNN2) to reduce the artifacts and noise in the low dose data. The invention can effectively reduce artifacts and noises in low-dose CT data, the data quality can meet the requirements of clinical analysis, diagnosis and the like, and improves the image quality of low-dose CT imaging.

Disclosed are a device for user interaction with a combined projector and camera and a method and a device for user interaction for recognizing an actual object to augment relevant information on a surface or a periphery of the actual object. The device for user interaction, includes: at least one projector-camera pair in which a projector and a camera are paired; a motor mounted in the projector-camera pair and configured to control a location and a direction of the projector-camera pair; and a body including a computer capable of including a wireless network and configured to provide connection with an external device, and a projection space and a photographing space of the projector-camera pair overlap each other.

Imaging system and method are presented. Emission scan (ES) and anatomical scan (AS) data corresponding to a target volume in a subject are received. One or more at least partial AS images are reconstructed using AS data. An image-space certainty (IC) map representing a confidence level (CL) for attenuation coefficients of selected voxels in AS images and a preliminary attenuation (PA) map based on AS images are generated. One or more of selected attenuation factors (AF) in projection-space are initialized based on PA map. A projection-space certainty (PC) map representing CL for the selected AF is generated based on IC map. An emission image of the target volume is initialized. The selected AF and emission image are iteratively updated based on the ES data, PC map, initial AF, and / or initial emission image. A desired emission image and / or AF values are determined based on the iteratively updated AF and / or emission image.

There is provided a pedestrian protection air bag system M1 in which air bags accommodated on a cowl each have a recessed portion which avoids a hinge mechanism and project from lateral side edges of a lower surface of a hood panel at a rear end thereof so as to cover front sides of front pillars. The hood panel is configured to be raised on a rear end side thereof so as to form a projection space for the air bags between the cowl and the rear end of the hood panel, while when in normal use, the hood panel is made to be opened upwards at a front end side thereof by means of the hinge mechanisms provided near the left and right edges at the rear end thereof. The hinge mechanisms, cases which cover the folded air bags and actuators for raising the hood panel are provided sequentially in that order towards the front on the lateral side edge of the hood panel at the rear end thereof.

The invention relates to a light emitting keyboard. The light emitting keyboard comprises a base board, a light source circuit layer, a switch circuit layer with a plurality of switch units, and a plurality of key caps which correspond with the plurality of switch units. Each key cap has a transparent area and a key cap projection space. A key cap gap, a plurality of light emitting assemblies in each key cap projection space and a plurality of light guiding plates are arranged between two adjacent key caps, wherein the plurality of light guiding plates are arranged in the key cap projection spaces in a manner of being separated from each other. A light guiding plate gap is arranged between two adjacent light guiding plates. The light guiding plate clearance at least extends below the key cap gap. The plurality of light emitting assemblies correspond with the plurality of light guiding plates, thereby supplying light to corresponding light inlet surfaces of the light guiding plates. Furthermore each light guiding plate guides the light to be emitted out of each upper light outlet surface, thereby emitting the light out of the transparent area of the corresponding key cap. Therefore, the light guiding plates which are separated from each other form an independent light guiding mechanism, thereby limiting the light so that the light can only be transmitted in the corresponding key cap projection space and preventing optical interference between adjacent buttons.

A tray system composed of a vertical stack of trays especially adapted to contain, and protect surgical instruments being carried from a sterilizer to an operating site. The trays may have various heights and be arranged in any order in the stack. Each tray includes a plurality of latches, each latch having an arm swingably mounted to the tray and terminated by a projection spaced a selected distance D1 above the tray rim or top when the latch is swung to its latching position. Each tray also includes a corresponding plurality of latching surfaces located under the latches on that tray. The distance D2 between the seating surfaces and latching surfaces of each tray corresponds substantially to the distance D1 of that tray. This enables the latch arms of each tray to be latched to the latching surfaces of an overlying tray in the stack or to a cover so as to form a closed compact transportable package. Different latch embodiments for securing the trays together are also disclosed.

A system comprising: one or more transmitters to transmit an excitation energy into an object under observation; one or more detectors to generate projection space data encoding an energy received by the one or more detectors in response to the transmitted excitation energy into the object under observation; a controller to control the one or more transmitters to transmit the excitation energy and the one or more detectors to generate the projection space data; and an image reconstructor to receive the projection space data and to process the projection space data by: computing a first quantity characterizing a difference between the projection space data and predicted projection data; computing a second quantity corresponding to at least one impulse response, each impulse response corresponding to a reference voxel of unit-intensity; computing an update value using the first quantity and an inverted function of the second quantity; and reconstructing an object space image representing the object under observation using the update value.

The invention discloses a cross-media searching method based on discrimination correlation analysis. The method comprises the following steps of establishing a cross-media training database, carrying out feature extraction, mean-value pretreatment and linear projection transformation sequentially for different modal samples, and setting a target function according to a projection space; solving the target function to acquire a linear projection vector; establishing a cross-media test database; sequentially performing the feature extraction and mean-value pretreatment for a target to be searched; utilizing the linear projection vector to perform the linear projection transformation for the feature data after the mean-value pretreatment; and calculating an Euclidean distance between two modal data projection vectors, listing the Euclidean distance in ascending order, and acquiring a cross-media searching result. Due to the adoption of the method, dimensional reduction can be effectively performed for the feature data, so that the feature data can be widely applied to other multi-modal work, for example the multi-modal biological feature recognition.

The present invention discloses a panoramic projection system and method. The system includes a projection room, an image acquisition device, a control device and a projector group; the projection room is used for providing a projection space; the image acquisition device is used for acquiring a panoramic image / video and panoramically mapping the rectangular layout of the panoramic / video to a panoramic sphere and making the panoramic sphere externally tangent to the geometric model of the projection room; the control device is used for establishing a virtual camera which is located at the geometric center of the geometric model of the projection room and controlling the virtual camera to take pictures of the surfaces of the geometric model of the projection room; and the projector group islocated inside or outside the projection room and is used for projecting the pictures of the surfaces of the geometric model of the projection room shot by the virtual camera onto corresponding surfaces in the projection room. With the panoramic projection system and method provided by the invention adopted, the panoramic image can be panoramically projected onto a projected object, and therefore, when a user views a projection in the projected object, the immersive experience of the user can be increased.

Air vehicles and associated aerodynamic structures are provided which include ridged solar panels to both reduce the drag and increase the solar energy harvested by the solar panel. The air vehicle may include an airframe and a solar panel carried by the airframe and defining an exterior surface thereof. The solar panel may include a plurality of ridged structures extending in a lengthwise direction. The ridged structures may be arranged such that a majority of the airflow over the exterior surface flows in the lengthwise direction. The plurality of ridged structures may include a plurality of lengthwise extending projections spaced about by respective valleys.

A grease cover (50) for protecting grease spread on a bottom surface of a heat sink (20) includes a base wall (51), a plurality of sidewalls (52a, 52b, 52c, 52d), a protecting space (53) between the base wall and the sidewalls, a holding space in an upper portion of the protecting space, and two projections (54). The protecting space is for accommodating the grease. The holding space is for receiving the heat sink therein. The projections extend from two opposite sidewalls of the grease cover. A top surface of each of the projections spaces a distance from the base wall, for supporting the bottom surface of the heat sink to enable the grease away from the base wall, when the heat sink is received in the holding space.