Abstract: The present teaching relates to generating search result information. In one example, at least one search result is obtained in response to a search query. Based on the at least one search result, a search result organization style may be determined, the search result organization style comprising a framed structure including a first plurality of frames. An objective function for organizing the at least one search result may be determined. A second plurality of content items from the at least one search result may be identified based on the objective function. An assignment for one or more content items from the second plurality to at least one frame in the framed structure may be determined based on the objective function. Presentation information may be generated indicating a manner by which the one or more content items are to be presented based on the assignment and the search result organization style.

Abstract: A computed tomography (CT) imaging apparatus includes a radiation source configured to emit X-rays; a plurality of photon-counting detectors configured to detect X-rays emitted by the radiation source and generate a photon counting signal based on the detected X-rays; and processing circuitry to obtain a kV-waveform used by the radiation source to generate the X-rays during a scan of an object, and adjust at least one energy threshold dividing the photon counting signal into a plurality of spectra bins in accordance with the obtained kV-waveform.

Abstract: A computed tomography (CT) method and apparatus including a radiation source configured to produce radiation directed to an object space, and a plurality of detector elements configured to detect the radiation produced from the radiation source through the object space and generate projection data. A rotation mount is configured to rotate the radiation source around the object space. Processing circuitry is configured to cause the rotation mount to rotate the radiation source, and to receive the projection data. The projection data includes a plurality of projection data sets. The processing circuitry calculates a set of weights based on the projection data sets, calculates a set of pre-weights based on the weights, and minimizes a penalized weighted least-squares cost function to produce a reconstructed image. The cost function is a sum of a weighted least-squares term, weighted using the weights, and a penalty term weighted using the pre-weights.

Abstract: The present teaching relates to providing a search result. In one example, a search request is received from a user. A plurality of content items is determined based on the search request. One or more content items are selected from the plurality of content items. A framed structure having at least one sub-component is generated. A correspondence is determined between the one or more content items and the at least one sub-component. Each of the one or more content items is arranged with respect to a corresponding sub-component. A search result is generated based on the one or more content items and the framed structure. The search result is provided.

Abstract: A method and apparatus for estimating a parameter vector including a plurality of parameters of a detector response model of a photon-counting detector. The method includes calculating a modeled spectrum based on an input spectrum and an initial value of the plurality of parameters. For each detector, a difference between the normalized photon count of the measured spectrum and the normalized modeled spectrum is calculated. A root mean square error (RMSE) between the measured and modeled spectra is obtained by squaring the normalized difference and weighting the normalized difference by a weighting factor. The parameter vector is updated until an optimum RMSE value is achieved. Upon determining optimal values of the parameter vector, measured data that is obtained via a patient scan is corrected based on the optimal parameter vector.

Abstract: A computed tomography (CT) apparatus and a method for identifying photon-counting detectors that are polarized due to high flux, thereby rendering the photon-counting detector inoperable. The data obtained from the photon-counting detectors that are determined to be polarized is skipped during an image pre-reconstruction phase. The data is further assigned a weight of zero during an image reconstruction phase in order to avoid imaging artifacts in the reconstructed CT image.

Abstract: A method and apparatus is provided to reconstruct a collective image of a multiple method/geometry imaging system (e.g., a hybrid computed tomography system having energy-integrating detectors arranged in a third-generation geometry and photon-counting detectors arranged in a fourth generation geometry), wherein a splitting-based iterative algorithm using modified dual variables is used in the image reconstruction. Whereas a separate image for each method/geometry of the multiple method/geometry imaging system can be obtained by solving the distinct system-matrix equation corresponding to each respective method/geometry, the collective image is obtained by simultaneously solving a collective optimization problem including all respective system-matrix. The collective image is obtained more efficiently using variable splitting to subdivide the optimization into subproblems that are solved in an iterative fashion.

Abstract: A method and apparatus is provided to decompose spectral computed tomography (CT) projection data into material components using singles-counts and total-counts projection data. The singles-counts projection data more accurately solves the material decomposition problem, but can produce multiple results only one of which is correct. The total-counts projection data generates a unique result, but is less precise. The total-counts projection data is used to disambiguate the multiple results of the singles-counts projection data providing a unique results that is also precise.

Abstract: Photon counting detectors are sparsely placed at predetermined positions in the fourth-generation geometry around an object to be scanned in spectral Computer Tomography (CT). An X-ray emitting source rotates radially outside the sparsely placed photon counting detectors. Furthermore, the integrating detectors are placed in the third-generation in combination to the sparsely placed photon counting detectors at predetermined positions in the fourth-generation geometry.

Abstract: An apparatus is provided that includes a digital processing circuit to obtain a digital signal corresponding to an output signal of a photon-counting detector; determine, from the obtained digital signal, a plurality of X-ray photons received by the photon-counting detector during a measurement period; determine a corresponding energy level of each of the plurality of X-ray photons; determine, based on the corresponding energy level, a corresponding weight for each of the plurality of X-ray photons; and calculate a sum of the corresponding weights of the plurality of X-ray photons.

Abstract: The present disclosure provides a lighting method, system, and streetlamp. The present disclosure may enable the streetlamp to illuminate according to the location of the vehicles, so as to avoid the wasting of electrical energy due to activation of the streetlamp during no passing of vehicles for a long time, by transmitting travelling information for indicating longitude and latitude of an adjacent vehicle by the vehicle, and providing illuminating for the roads upon determining that the vehicle is in the illumination coverage of the streetlamp by the processor in the streetlamp.

Abstract: An apparatus and method of processing X-ray projection data obtained using photon-counting detectors and having multiple spectral components. The processing of the projection data includes correcting for nonlinear detector response, where the detector response model includes: pileup, ballistic deficit effects, polar effects, and characteristic X-ray escape. The processing of the projection data also includes a material decomposition mapping the projection data from spectral components into material components corresponding to high-Z and low-Z materials. The material decomposition includes a noise balancing process where the allocation of spectral components between a high-energy and a low-energy combination of spectral components is adjusted such that both high- and low-energy components have signal-to-noise ratios of similar magnitude. For computed tomography (CT) applications, material decomposition can be followed by image reconstruction and then image post-processing and presentation.

Abstract: The present disclosure provides a traffic light for cooperative vehicle-infrastructure and a method for controlling the same. The traffic light for cooperative vehicle-infrastructure includes: a communication module, a central processing module, a Global Positioning System GPS module and a scheduling module. The communication module is configured to receive a set of messages sent by vehicles periodically. The GPS module is configured to locate the position of the traffic light. The central processing module is configured to perform calculations and analyses on the received set of messages and the position of the traffic light, dynamically set lasting times of red and green lamps of the traffic light, and send a control signal carrying the set times to the scheduling module. The scheduling module is configured to control the lasting times of the red and green lamps of traffic light according to the control signal carrying the set times.

Abstract: The present disclosure provides a vehicle-based network data transmission method and device. The method includes: receiving, by a server, a request from a current vehicle for acquiring network data; obtaining information of a virtualized base station group according to the request; and transmitting, by the server, the network data to the current vehicle through the virtualized base station group.

Abstract: The present disclosure provides an auto-parking system. The system includes a data acquiring unit, a center-processing unit, and a vehicle control unit, wherein the data acquiring unit and the center-processing unit may be provided in a parking lot, the vehicle control unit may be provided in the vehicle, the center-processing unit may be communicationally connected with the data acquiring unit in a wired way, and the center-processing unit may be communicationally connected with the vehicle control unit in a wireless way. The auto-parking system provided by the present disclosure may reduce the parking cost for the user of the vehicle, since it is necessary for each vehicle to only install a vehicle control unit.

Abstract: The present disclosure provides data transmitting and receiving methods, transmitter, receiver and CAN bus network. The present disclosure may enhance the security of CAN bus messages and solve the technical problem of leakage of information due to that the CAN bus may be vulnerable to attacks by encrypting the data field in the CAN bus message and thereby the data field may be transmitted in cipher-text during transmission. The reason is that in the related art, the CAN bus messages are always transmitted in plain-text and thus the CAN bus messages may be intercepted, hacked or counterfeited. More particularly, when the counterfeited messages appear on the CAN bus, vehicle braking may be caused, the gear box and engine may be out of control, which may threaten the safe in driving. With the technical solution of the present disclosure, such accidents may be avoided.

Abstract: The present disclosure provides a method for vehicle data processing and a vehicle terminal, thereby solving the problem of the prior art that a driving vehicle cannot obtain the road condition ahead in time. The method includes: taking image data of road condition ahead via a camera when it is detected that a current road condition meets a share condition; obtaining current geographic position information as road condition position information via positioning; generating a corresponding driving data share packet by taking the image data of road condition and the road condition position information as road condition data; and sending the driving data share packet to a vehicle temporary network as a broadcast message for sharing the driving data share packet with peripheral devices. The driving data share packet is sent to vehicles in the vehicle temporary network, so that a driving vehicle may obtain the road condition information ahead in time.

Abstract: Embodiments of the disclosure provide a vehicle speed monitoring method and device. The method comprises: acquiring limited speed information of a current road; calculating the instantaneous speed of a current vehicle; and judging whether the instantaneous speed of the current vehicle is greater than the limited speed of the current road, and if so, outputting speeding information; wherein the current vehicle has diameter information of wheels, and the step of calculating the instantaneous speed of the current vehicle comprises: acquiring the time used for the wheels to run one cycle; and calculating the instantaneous speed of the current vehicle according to the diameter information of the wheels and the time used for the wheels to run one cycle.

Abstract: Embodiments of the present disclosure provide a driving behavior evaluating method and device. The method specifically includes: according to an acquired driving data information, determining a driving behavior corresponding to the driving data information; and sending a prompt information when determining that the driving behavior is a dangerous driving behavior. According to the embodiments of the present disclosure, the prompt information is sent when the driving behavior is determined to be a dangerous driving behavior, so that traffic accidents are avoided.

Abstract: The present disclosure provides a differential positioning method based on an intelligent vehicle infrastructure cooperative system and the intelligent vehicle infrastructure cooperative system. The system includes: a road side unit for obtaining a differential positioning correction parameter and broadcasting the differential positioning correction parameter to an on board unit within a preset range; and the on board unit for obtaining original positioning data of the on board unit, and correcting the original positioning data based on the differential positioning correction parameter to obtain final positioning data of the on board unit.