Abstract: A forensic detector for remotely sensing a porphyrin-containing substance on a surface of an object is provided. The forensic detector includes an excitation light source for generating an excitation light beam, plural optical elements, one or more sensors for measuring a first and second radiation powers, and a computer processor. The excitation light beam has an excitation wavelength capable of exciting porphyrin to luminesce at a target wavelength centered between 665-675 nm. The first and second radiation powers are in non-overlapping wavelength regions of the object-originated light beam. The computer processor is configured to compute a SNR according to the first radiation power and a background noise power level, and to determine if the porphyrin-containing substance is present on the surface according to the SNR. The background noise power level is obtained from the one or more second radiation powers.

Abstract: Systems and methods in which multi-dimensional metric monitoring is used with respect to multi-wavelength scattering for smoke detection are described. A multi-dimensional metric may dynamically track a slope of a relationship between scattered light of multiple wavelengths of scattered light being monitored. A multi-dimensional metric monitoring smoke detection algorithm may utilize multi-dimensional thresholds with respect to monitoring of the multi-dimensional metric for initiating a fire alarm and resetting the fire alarm. An optical measuring chamber utilized for providing multi-wavelength scattering signals utilized in deriving a multi-dimensional metric for smoke detection may be configured for wide-scattering-angle signal collection, such as using a light trapping sub-chamber having a light-guide diaphragm assembly configured for wide-scattering-angle signal collection.

Abstract: A method for extracting information from a table includes steps as follows. Characters of a table are extracted. The characters are merged into n-gram characters. The n-gram characters are merged into words and text lines through a two-stage GNN mode. The two-stage GNN mode comprises sub steps as: spatial features, semantic features, CNN image features are extracted from a target source; a first GNN stage is processed to output graph embedding spatial features from the spatial features; and a second GNN stage is processed to output graph embedding semantic features and graph embedding CNN image features from the semantic features and the CNN image features, respectively. The text lines are merged into cells. The cells are grouped into rows, columns, and key-value pairs based on one or more adjacency matrices, a row relationship among the cells, a column relationship among the cells, and a key-value relationship among the cells.

Abstract: Computer implemented methods and computerized apparatus for identifying planes of a 3D object in a 3D scene are provided. The method comprises receiving a point cloud and performs plane segmentation. In one embodiment, the point cloud is voxelized into a plurality of voxels of equal dimensions and the plurality of voxels are classified into three categories, wherein each first category voxel satisfies a planar requirement and a first neighborhood constraint, each second category voxel satisfies the planar requirement and a second neighborhood constraint, and each third category voxel does not satisfy the planar requirement.

Abstract: A wireless power transmitter has electromagnets and a transmitter coil mounted on a moving plate. Current in the main DC circuit is switched into the electromagnets by transistors that control the amount and direction of current through the electromagnets to control the strength and polarity of electromagnetic fields generated by the electromagnets. A controller initially drives a high gate voltage onto transistors to cause the electromagnets on the transmitter to generate a maximum attractive force with magnets on the receiver, causing the moving plate to move the transmitter coil into closer alignment with the receiver coil. A power factor is measured on both receiver and transmitter to estimate the power transfer efficiency. The controller then reduces the gate voltage by a step size and the power factors are measured again. The gate voltage continues to be adjusted to optimize the power transfer efficiency until reaching a maxima.

Abstract: The present invention includes systems and method for generating Virtual IDs (VIDs) and corresponding Virtual ID Chains (VICs) to anonymize and represent transactions between users, data sources, Virtual ID Management Platforms (VMP), and Third-Party Service Providers (TSPs). VIDs of embodiments are virtualized identifiers that may be used to anonymously and uniquely identify transaction participants. VIDs may be generated in a distributed manner as a party receiving transaction-related information generates a VID corresponding to the sending party. VICs of embodiments are virtualized arrays of VIDs that represent the sequence of interactions between parties to a transaction. VICs are preferably stored in association with transaction logs descriptive of the transaction represented by each VIC to facilitate subsequent processing. A VIC may be iteratively resolved to obtain one or more non-virtualized identifier corresponding to transaction participants represented by the VIC.

Abstract: Described is a method of processing a signal received at an uplink control information (UCI) receiver in a wireless communication system. The method comprises processing a signal received on an uplink (UL) at said UCI receiver to transform said received signal into a likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) and determining a maximum magnitude ?max value from said likelihood calculation. The method includes comparing said maximum magnitude ?max value to a selected, calculated or predetermined scaled threshold S·? where ? is a threshold and S is a scaling factor for the threshold ?. The comparison step is such that, where |?max|2>S·?, the method comprises determining that the signal received comprises a linear block encoded signal. In the method, prior to said comparison step, the scaling factor S is selected from a plurality of scaling factor options.

Abstract: A method for inter-blockchain communication, comprising: receiving from a sender node in a sender blockchain a data message for transmission to a receiver node in a receiver blockchain; encrypt and encapsulate by an encryption module the data message into an event, wherein the event comprising an exposed header containing information for routing the event through the blockchains and identifying the sender and the receiver nodes; broadcasting the event to a communication bridge comprising multiple bridge nodes; transferring the event through the bridge nodes to an event exchange module of the receiver blockchain; validating the event by a validation module; decrypting and decapsulating the validated event by a decryption module into a decrypted data message; and recording the decrypted data message into the receiver blockchain ledger for reading by the receiver node. The multiple bridge nodes ensure redundancy for the reliable delivery of events in the inter-blockchain communication.

Abstract: Described is a method and device for processing a signal received at an uplink control information (UCI) receiver in a wireless communication system. The method comprises processing a signal received on an uplink (UL) at said UCI receiver to transform said received signal into a likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N). The likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) may comprise a multi-dimensional discrete Fourier transform (DFT) (?1 . . . ?i . . . ?N) of said received signal. The multi-dimensional may be formed as a Hadamard Transform. The method includes determining a maximum magnitude ?max value from said likelihood calculation of possible transmitted codewords (?1 . . . ?i . . . ?N) and then comparing said ?max value to a selected, calculated or predetermined scaled threshold c·? where ? is a threshold and c is a scaling factor for the threshold ?.

Abstract: A multilayered optical security device has a resonant waveguide grating (RWG) layer on an under layer having a hologram. The RWG layer has plural RWGs for generating one or more patterns. Each RWG has first and second RWG portions, with diffraction gratings of different grating periods, for light coupling-in and coupling-out, respectively. Using the RWGs minimizes interference to a holographic image generated by the under layer. This advantage is especially useful when the holographic image carries digital data such as in digital holographic encryption where an encrypted hologram is used in the under layer. The digital data may contain biometric information such as a fingerprint. In each RWG portion of an individual RWG, scattering elements in a grating are curved to thereby enhance an angular tolerance in azimuthal angle during observing the patterns by an observer while the individual RWG is still selective in elevation angle.

Abstract: A method for estimating camera orientation relative to a ground surface. Line segments are detected from an image captured by a camera. A first virtual cube having three orthogonal vanishing points with a random 3D orientation is superimposed on to the image. The line segments of the image are classified grouped into 3D-directional groups. A second virtual cube is superimposed on to the image with an initial 3D orientation. An optimal 3D orientation of the second virtual cube is computed by iteratively changing the 3D orientation of the second virtual cube and measuring perpendicular distances of the three orthogonal vanishing points to the three line segment groups in each iteration starting with the initial 3D orientation, wherein the optimal 3D orientation of the second virtual cube being one that provides shortest perpendicular distances. Co-variances of the orthogonal vanishing points of the second virtual cube at the optimal orientation are computed.

Abstract: Systems and methods which use an optical sensor and an electromagnetic sensor in cooperation for detecting concentrations of one or more materials in solutions are described. In operation according to embodiments of a cooperative optical and electromagnetic sensor material concentration detector, both an optical sensor and electromagnetic sensor are used in cooperation to detect a concentration of a material having a physical feature that is otherwise incompatible with one or the other sensors and/or a material for which measurement is affected by another material present in the sample. Embodiments are, for example, configured to provide a cooperative implementation of optical and electromagnetic sensors operable to detect concentrations of metal ions and acid in a solution, such as for use in real-time material concentration detection.

Abstract: A method for summarizing text with sentence extraction including steps as follows. Sentences are extracted from a document including text by a natural language processing (NLP) based feature extractor. A word vector set with respect to each of the sentences is generated by a processor. The word vector set with respect to each of the sentences is used to generate a n-grams vector set and a phrase-n vector set with respect to each of the sentences. A word score representing similarity between the word vector sets, a n-grams score representing similarity between the n-grams vector sets, and a phrase-n score representing similarity between the phrase-n vector sets are computed. The word, n-grams, and phrase-n scores are combined to compute an edge score. Text features are selected from the sentences using the edge scores of the sentences, so as to output a summary of the document.

Abstract: There is disclosed an apparatus for visually inspecting gemstones. The apparatus contains a first light source, a sample stage adapted to receive a gemstone thereon, and a rotating stage located below the sample stage. The rotating stage is adapted to rotate relative to the sample stage. Embodiments of the invention therefore provide a portable and automatic gemstone inspecting apparatus that provides multiple inspection methods centrally without the need to use other external devices.

Abstract: The present invention provides an anomaly detection method and apparatus based on a neural network which can be trained on undamaged normal vehicle images and able to detect unknown/unseen vehicle damages of stochastic types and extents from images which are taken in various contexts. The provided method and apparatus are implemented with functional units which are trained to perform the anomaly detection under a GCAN model with a training dataset containing images of undamaged vehicles, intact-vehicle frame images and augmented vehicle frame images of the vehicles.

Abstract: The present disclosure describes methods, devices, and non-transitory computer readable storage medium for recognizing a human action using a graph convolutional network (GCN). The method includes obtaining, by a device, a plurality of joint poses. The device includes a memory storing instructions and a processor in communication with the memory. The method also includes normalizing, by the device, the plurality of joint poses to obtained a plurality of normalized joint poses; extracting, by the device, a plurality of rough features using a modified spatial-temporal GCN (ST-GCN) from the plurality of normalized joint poses; reducing, by the device, a feature dimension of the plurality of rough features to obtain a plurality of dimension-shrunk features; refining, by the device, the plurality of dimension-shrunk features based on a self-attention model to obtain a plurality of refined features; and recognizing, by the device, a human action based on the plurality of refined features.

Abstract: Described is a method of decoding a physical sidelink control channel (PSCCH). The method comprises: for a PSCCH candidate in a resource grid, processing a received demodulation reference signal (DMRS) in a subframe of the resource grid associated with the PSCCH candidate to determine one or more potential PSCCHs for decoding, each of the one or more potential PSCCHs being identified by resource block (RB) position in the resource grid and a corresponding DMRS cyclic shift (ncs) value. This step is repeated for at least one other DMRS in the subframe to determine one or more potential PSCCHs for the at least one other DMRS. Then, a subset L of PSCCHs is selected from the potential PSCCHs. The selected subset L of PSCCHs together with their corresponding DMRS cyclic shift (ncs) values are made available for use in a decoding process for the received channel signal.

Abstract: Computer implemented methods and computerized apparatus for posture, dimension and shape measurements of at least one 3D object in a scanned 3D scene are provided. The method comprises receiving a point cloud and performs 3D geometric feature extraction. In one embodiment, the 3D geometric feature extraction is based on a 3D hybrid voxel-point structure, which comprises a hybrid voxel-point based normal estimation, a hybrid voxel-point based plane segmentation, a voxel-based geometric filtering, a voxel-based edge detection and a hybrid voxel-point based line extraction. Through the process of 3D geometric feature extraction, the geometric features are then passed to the geometric-based dimension and shape measurements for various applications. After 3D geometric feature extraction, a further process of feature-based object alignment is performed.

Abstract: A long-range wireless network extends the battery life of the most remote end devices by forming pairs with a relayer end device that relays data from the remote end device to a gateway. The battery life of the relayer is reduced to extend the battery life of the remote end device. An analysis server selects pairs of end devices that have a difference in battery levels above a threshold, and require less transmission energy from the remote end device to the relayer than to the gateway. Energy or path losses are estimated based on geographic locations of end devices and terrain or obstacles. Redundant pairs from a remote end device are eliminated by selecting the relayer requiring the lowest transmission energy. A new configuration is sent to the remote end device. New configurations with higher Spreading Factors (SF) compensate for pairs with larger path losses to the relayer.

Abstract: An active filter reduces Electro-Magnetic Interference (EMI) created by current flowing through a power line. The active filter connects to the power line at a single node through a connection capacitor. A sense current flows through the connection capacitor when the power line current changes. This sense current is applied to a non-inverting input of an op amp to drive a power amplifier circuit through a filter capacitor. The power amplifier circuit increases the current drive of the op amp to charge a transfer capacitor that converts the power amplifier output current to a transfer voltage. The transfer capacitor is connected to the connection capacitor so that the transfer voltage is injected back into the power line through the connection capacitor as an injected voltage that compensates for the sensed current. Op amp gain is adjustable by variable resistors that connect to the inverting input of the op amp.