961 results about "Intrinsics" patented technology

The present invention provides a broad band retardation plate that can be fabricated by a simple process and uniformly retards light incident of the entire visible light region. The retardation plate contains materials including positive or negative intrinsic double refraction values. When retardation values in wavelengths of 450 nm, 550 nm, and 650 nm are defined as Re(450), Re(550) and Re(650), respectively, the retardation plate satisfies the relational expression of Re(450)<Re(550)<Re(650). The retardation plate has a first layer comprising a positive material and a second layer comprising a negative material. The first layer and second layers have double refraction, and are laminated such that lag axes of the both layers are orthogonally crossed. It is preferable that the positive material is a norbornene based polymer and the like.

The invention discloses a non-planar network fracturing construction control method for a fractured reservoir, which includes the step: firstly, performing pre-fracturing evaluation by (1) obtaining the intrinsic fracture development degree and directions according to FMI (formation micro-scanner image) logging and conventional logging data, (2) determining man-made fracture directions, (3) judging the angle relation between man-made fractures and intrinsic fractures, and (4) judging the non-planar network fracturing formation adequacy; secondly, establishing a stress field inversion constrained optimization model by utilizing a numerical value inversion method combining multi-well constrained optimization and finite elements so as to obtain numerical simulation of three-dimensional geostress states and rock mechanical parameters of a fractured reservoir area; thirdly, selecting corresponding construction parameters, and fracturing strata so as to force the intrinsic fractures and holes to open as large as possible; and fourthly, according to the opened equivalent number and openness of the intrinsic fractures explained by test fracturing, selecting grain sizes and use amount of propping agents matched with the intrinsic fractures or the holes, and leading fracturing fluid carrying the propping agents to enter the intrinsic fractures or the holes.

Techniques for improving the performance of a quantum processor are described. Some techniques employ improving the processor topology through design and fabrication, reducing intrinsic/control errors, reducing thermally-assisted errors and methods of encoding problems in the quantum processor for error correction.

Methods for classifying and for evaluating the prognosis of a subject having breast cancer are provided. The methods include prediction of breast cancer subtype using a supervised algorithm trained to stratify subjects on the basis of breast cancer intrinsic subtype. The prediction model is based on the gene expression profile of the intrinsic genes listed in Table 1. This prediction model can be used to accurately predict the intrinsic subtype of a subject diagnosed with or suspected of having breast cancer. Further provided are compositions and methods for predicting outcome or response to therapy of a subject diagnosed with or suspected of having breast cancer. These methods are useful for guiding or determining treatment options for a subject afflicted with breast cancer. Methods of the invention further include means for evaluating gene expression profiles, including microarrays and quantitative polymerase chain reaction assays, as well as kits comprising reagents for practicing the methods of the invention.

The invention relates to a multiple-template matching identity recognition method based on an ECG (Electrocardiogram) under an electrocardiogram abnormality state, and belongs to the technical field of biological characteristic identity recognition. The ECG data of a user to be recognized is compared with the data of a registered user in a template library to obtain an identity recognition result. The key technology of the method comprises the following steps: carrying out electrocardiosignal preprocessing for eliminating noise interference; carrying out electrocardiosignal decomposition to separate an electrocardiogram waveform of each period; carrying out standardized processing for independently achieving standardization on time and amplitude scales; carrying out characteristic extraction: in the step, characteristics are extracted by wavelet transform, and clustering analysis is carried out by an ISODATA (Iterative Self-organizing Data Analysis Techniques Algorithm) so as to construct an ECC template library; and carrying out correlation analysis: in the step, correlation between ECG test data and each template is calculated, an optimal matching template is selected, and finally, an identity recognition result is obtained. The multiple-template matching identity recognition method provided by the invention utilizes the intrinsic electrocardiosignal of a human body to recognize an identity, and the ECG data under the abnormality state is considered.

Methods and apparatus for camera calibration based on multiview image geometry. A lens profiling module may estimate two or more mathematical models for correcting aberrations in images in a single pass from a set of calibration images captured with a camera/lens combination. For example, the module may estimate the lens aberrations of geometric distortion, lateral chromatic aberration, and vignette models in a single pass. The module may determine point correspondences, 3D transformations, and camera intrinsics for views of calibration charts captured in the images. The module estimates the mathematical models for the two or more types of aberrations from the information determined from the views of the calibration charts. The module may automatically determine an optimal model complexity when estimating the mathematical models. The estimated models may be written or appended to a lens profile for the camera/lens combination used to captured the calibration images.

Embodiments herein include systems, methods and articles of manufacture for calibrating a camera. In one embodiment, a computing system may be coupled to a calibration apparatus and the camera to programmatically identify the intrinsic properties of the camera. The calibration apparatus includes a plurality of light sources which are controlled by the computer system. By selectively activating one or more of the light sources, the computer system identifies correspondences that relate the 3D position of the light sources to the 2D image captured by the camera. The computer system then calculates the intrinsics of the camera using the 3D to 2D correspondences. After the intrinsics are measured, cameras may be further calibrated to in order to identify 3D locations of objects within their field of view in a presentation area. Using passive markers in a presentation area, computing system may use an iterative process that estimates the actual pose of the camera.

This invention relates to a method of making flat sheet asymmetric membranes, including cellulose diacetate/cellulose triacetate blended membranes, polyimide membranes, and polyimide/polyethersulfone blended membranes by formulating the polymer or the blended polymers dopes in a dual solvent mixture containing 1,3 dioxolane and a second solvent, such as N,N′-methylpyrrolidinone (NMP). The dopes are tailored to be closed to the point of phase separation with or without suitable non-solvent additives such as methanol, acetone, decane or a mixture of these non-solvents. The flat sheet asymmetric membranes are cast by the phase inversion processes using water as the coagulation bath and annealing bath. The dried membranes are coated with UV curable silicone rubber. The resulting asymmetric membranes exhibit excellent permeability and selectivity compared to the intrinsic dense film performances.

A method constructs a classifier from training data and detects moving objects in test data using the trained classifier. High-level features are generated from low-level features extracted from training data. The high level features are positive definite matrices on an analytical manifold. A subset of the high-level features is selected, and an intrinsic mean matrix is determined. Each high-level feature is mapped to a feature vector on a tangent space of the analytical manifold using the intrinsic mean matrix. An untrained classifier is trained with the feature vectors to obtain a trained classifier. Test high-level features are similarly generated from test low-level features. The test high-level features are classified using the trained classifier to detect moving objects in the test data.

A method and apparatus for cardioverting the atrium of a human heart that includes insertion of first and second elongated electrodes tranvenously into the heart and associated vessels. One electrode is preferably located in the coronary sinus and great vein of the heart. The other electrode is preferably located in the vicinity of the right atrium of the heart, spaced from the electrode located in the coronary sinus. In response to detection of fibrillation or in response to manual triggering, a defibrillation pulse is applied between the first and second electrodes to effect atrial cardioversion. Further, after delivery of a successful defibrillation shock, the width of intrinsic p-waves are monitored and bi-atrial pacing is temporarily initiated if the width exceeds a preset or programmable threshold.

A remote support site having a detector internally collecting information on a user-selectable intrinsic broadcast characteristic of a media-playing set or television and a server enabling specification of a preferred setting for such characteristic from this information. A method including maintaining a remote site, therefrom internally collecting information from the set about a user-selectable intrinsic broadcast characteristic, and therefrom specifying a preferred setting for such characteristic. A similar method but information detected upon user request about user-adjustable component for selecting on-screen characteristic and final step is remotely adjusting component. A similar method but information is about broadcast characteristic potentially selectable initially by user instead remotely specified initially. A similar method but information is about plural broadcast characteristics and final step is remotely providing settings for each. Two methods on menu-free TV control via remote and a method listing possible broadcast outcomes so user can readily target outcome to resolve.

This invention provides a system and method to validate the accuracy of camera calibration in a single or multiple-camera embodiment, utilizing either 2D cameras or 3D imaging sensors. It relies upon an initial calibration process that generates and stores camera calibration parameters and residual statistics based upon images of a first calibration object. A subsequent validation process (a) acquires images of the first calibration object or a second calibration object having a known pattern and dimensions; (b) extracts features of the images of the first calibration object or the second calibration object; (c) predicts positions expected of features of the first calibration object or the second calibration object using the camera calibration parameters; and (d) computes a set of discrepancies between positions of the extracted features and the predicted positions of the features. The validation process then uses the computed set of discrepancies in a decision process that determines whether at least one of the discrepancies exceeds a predetermined threshold value. If so, recalibration is required. Where multiple cameras are employed, extrinsic parameters are determined and used in conjunction with the intrinsics.

Aspects of the present invention include systems and methods for recalibrating projector-camera systems. In embodiments, systems and methods are able to recalibrate automatically the projector with arbitrary intrinsic and pose, as well as render for arbitrarily desired viewing point. In contrast to previous methods, the methods disclosed herein use the observing camera and the projector to form a stereo pair. Structured light is used to perform pixel-level fine reconstruction of the display surface. In embodiments, the geometric warping is implemented as a direct texture mapping problem. As a result, re-calibration of the projector movement is performed by simply computing the new projection matrix and setting it as a camera matrix. For re-calibrating the new view point, the texture mapping is modified according to the new camera matrix.

Described herein are designs and design methods for intracorneal inlays with intrinsic dioper power (i.e., index of refraction different from the surrounding cornea tissue). The designs and design methods achieve a desired refractive change by a combination of the intrinsic diopter power of the inlay and the physical shape of the inlay, which alters the shape of the anterior cornea surface.

A digital image that includes first and second regions is processed. An intrinsic color of a given pixel located in an area of interest that is adjacent to at least one of the first and second regions is estimated by extrapolating from colors of multiple pixels in one of the first and second regions and multiple pixels in the other of the two regions.

A random intrinsic chip ID generation employs a retention fail signature. A 1^st and 2^nd ID are generated using testing settings with a 1^st setting more restrictive than the 2^nd, creating more fails in the 1^st ID bit string that includes 2^nd ID bit string. A retention pause time controls the number of retention fails, adjusted by a BIST engine, wherein the fail numbers satisfy a predetermined fail target. Verification confirms whether the 1^st ID includes the 2^nd ID bit string, the ID being the one used for authentication. Authentication is enabled by a 3^rd ID with intermediate condition such that 1^st ID includes 3^rd ID bit string and 3^rd ID includes 2^nd ID bit string. The intermediate condition includes a guard-band to eliminate bit instability problem near the 1st and 2^nd ID boundary. The intermediate condition is changed at each ID read operation, resulting in a more secure identification.

The invention provides a calibration method of a camera and inertial sensor integrated positioning and attitude determining system. The method comprises the following steps: calibrating the intrinsic matrix of the camera; shooting a plurality of images of a calibration object with known dimensions from different angles, and recording the roll angle and the pitch angle output by the inertial sensor when each image is shot; defining a world coordinate system, a camera coordinate system, an inertial sensor coordinate system and a geomagnetic coordinate system; calculating the rotation matrix from the world coordinate system to the camera coordinate system at the moment based on the image information and spatial information of the calibration object in each image; integrating the shot images pairwise, establishing an equation set with respect to the rotation matrix from the inertial sensor coordinate system to the camera coordinate system for each group, and solving the equation set to calculate the rotation matrix from the inertial sensor coordinate system to the camera coordinate system; and establishing an equation set with respect to the rotation matrix from the geomagnetic coordinate system to the world coordinate system for each image, and solving the equation set to calculate the rotation matrix from the geomagnetic coordinate system to the world coordinate system.

The invention discloses a calibration device for a robot hole forming platform vision measurement system, and further discloses a calibration method based on the calibration device. The method comprises the steps of building a calibration plate coordinate system and a tool coordinate system according to a calibration plate, building a two-dimensional transformation relation of the calibration plate coordinate system and the tool coordinate system on a calibration plate locking face according to the geometric positional relation of a middle hole and a spindle hole of a none-hole array, building a camera coordinate system on a calibration plate shooting face, conducting calibration on camera intrinsic parameters and calculation on camera external parameters according to a nine-hole array image shot by a camera, building a two-dimensional transformation relation of the camera coordinate system and the calibration plate coordinate system on the calibration plate locking face, thereby obtaining a two-dimensional hand-eye relation of the camera coordinate system and the tool coordinate system on the calibration plate locking face, and then obtaining a three-dimensional hand-eye relation between the camera coordinate system and the tool coordinate system by combining distance information, obtained through measurement of a camera coordinate system original point in the hole forming depth direction with distance information, obtained through measurement, of a tool coordinate system original point.

A first copy of an intrinsic ID of a first node may be stored on a second node. The first node may receive a challenge that causes it to generate a second copy of its intrinsic ID. The second copy and a random value may be used as inputs of a function to generate a first code. The first code is transmitted to the second node. The second node decodes the first code using its local copies of the random value and/or the intrinsic ID. The second node checks the decoded information against its local information and authenticates the first node if there is a match.

The invention provides a single phase ground fault section locating method in a small current grounding system, which includes the following steps: step 1, recording the zero mode voltage and the zero mode current of the previous period and the next period of the single phase ground fault time when the single phase ground fault occurs to the small current grounding system; step 2, selecting the highest frequency intrinsic mode function component after decomposing the transient zero mode power pure fault component of the single phase ground fault time through empirical mode decomposition; step 3, obtaining the approximate entropy proportionality factor of the highest frequency intrinsic mode function component of each detecting section through the approximate entropy value of the high frequency intrinsic mode function component of each detecting section; and step 4, comparing the approximate entropy proportionality factor of the highest frequency intrinsic mode function component of each detecting section with the preset first threshold in the main station, so as to find out the section with the single phase ground fault. The single phase ground fault section locating method has the characteristics of high detecting precision and universality, and can be widely applied to the power system.