Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain an origin related to an X-ray scanner; determine a coordinate system based on the origin; determine coordinates of a second location of the X-ray scanner based on the origin and the coordinate system; obtain coordinates of a first location based on the origin and the coordinate system; and determine, based on the origin and the coordinates of the second location, positioning information of the X-ray scanner configured to cause the X-ray scanner to be positioned at the first location from the second location of the X-ray scanner.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain one or more images relating to the target in the object; determine one or more image target locations corresponding to the target based on the one or more images; determine a target position of the target based on the one or more image target locations corresponding to the target; and determine positioning information of an indicator or an X-ray source of the X-ray scanner based on the target position.

Abstract: A method may include obtaining an initial image that is captured by scanning a scan object using the imaging device. The method may also include performing an iteration process including one or more iterations. Each of the one or more iterations may include determining, according to a thickness model, an equivalent thickness associated with the scan object based on a brightness of a first image and the target brightness, determining one or more second exposure parameters corresponding to the equivalent thickness and the target brightness based on the thickness model, and generating a second image by directing the imaging device to scan the scan object based on the one or more second exposure parameters using the imaging device. The first image may be the initial image in a first iteration of the one or more iterations or an image generated in a previous iteration.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain one or more images relating to the target in the object; determine one or more image target locations corresponding to the target based on the one or more images; determine a target position of the target based on the one or more image target locations corresponding to the target; and determine positioning information of an indicator or an X-ray source of the X-ray scanner based on the target position.

Abstract: A video editing apparatus includes a recognition unit that recognizes a target that is captured in a video for a time period, a registration unit that registers therein the target, recognized by the recognition unit, in association with the time period, and a display that displays, in response to reception of information, an image in which the target associated with the time period and identified by the information is recognized.

Abstract: The present disclosure relates to a system and method for locating a target subject associated with an X-ray system. The X-ray system may include an X-ray source, a detection component, an arm, and a platform. The X-ray system may also include a first positioning component, a second positioning component, or a third positioning component. The first positioning component may be configured to determine a target point where a region of interest (ROI) of the target subject locates. The second positioning component may be configured to locate the target subject. The third positioning component may be configured to obtain location information of a target device associated with the target subject in real-time.

Abstract: A method may include obtaining an initial image that is captured by scanning a scan object using the imaging device. The method may also include performing an iteration process including one or more iterations. Each of the one or more iterations may include determining, according to a thickness model, an equivalent thickness associated with the scan object based on a brightness of a first image and the target brightness, determining one or more second exposure parameters corresponding to the equivalent thickness and the target brightness based on the thickness model, and generating a second image by directing the imaging device to scan the scan object based on the one or more second exposure parameters using the imaging device. The first image may be the initial image in a first iteration of the one or more iterations or an image generated in a previous iteration.

Abstract: A search method is disclosed, including obtaining, by one or more processors, query information, searching, by the one or more processors, index information based at least in part on the query information, the index information comprising information that pertains to application units, wherein the information that pertains to an application unit comprises content of the application unit and Uniform Resource Identifier of the application unit, determining, by the one or more processors, an application unit based at least in part on a search result, and running, by the one or more processors, the application unit.

Abstract: The present disclosure relates to systems and methods for positioning an X-ray scanner. The systems may perform the methods to obtain one or more images relating to the target in the object; determine one or more image target locations corresponding to the target based on the one or more images; determine a target position of the target based on the one or more image target locations corresponding to the target; and determine positioning information of an indicator or an X-ray source of the X-ray scanner based on the target position.

Abstract: A needle shield assembly for enclosing a needle cannula includes a needle cannula having a needle hub at a proximal end thereof and a sharp distal end. A needle shield adapter is mounted to the needle hub and a needle shield is connected to the adapter. The needle shield is moveable between a first position enclosing the needle cannula and a second position exposing the needle cannula for use.

Abstract: A self-powered wearable luminous device belongs to a technical field of the self-powered wearable device which is capable of achieving self-powering by collecting kinetic energy of the human body. A power generation module, an electronic component and a luminous component are connected with each other via wires and are installed within a wearable unit. The luminous component emits lights by collecting the energy generated by human motions. The present invention has simple structure and low manufacturing cost, is able to generate relatively stable and high brightness light, and achieves the self-power, so that the replacement of batteries is avoided.

Abstract: A spike strip for disabling vehicle tires is disclosed which is formed from a scissor arm assembly of a plurality of arms engaged at pivots. Moveably from a collapsed position to an elongated position the assembly has a plurality of spikes engaged thereon for puncturing vehicle tires. The spikes can be removed and replaced and can be formed into spike nets by an engaged cable.

Abstract: Computer instructions, computing device and method for processing seismic data under-sampled in an angle domain, the seismic data corresponding to a reverse time migration, three-dimensional, angle domain common image gather (ADCIG). The method includes receiving the seismic data; calculating, based on the seismic data, shot and receiver wave-fields with an RTM wave propagation engine; applying a wave-fields decomposition algorithm to obtain a propagation direction for the shot and receiver wave-fields; forming the ADCIG by applying an image condition to the shot and receiver wave-fields; determining that specular energies of the ADCIG are under-sampled around a reflection angle; during the step of forming the ADCIG, extrapolating the specular energies to a neighborhood of the reflection angle; and generating an image of a subsurface that is being surveyed based on the extrapolated specular energies.

Abstract: In a casting apparatus for external skeletal and joint fixation, a plurality of articulated segments may comprise a plurality of cuboid members threaded on a continuous cord having distal ends connected to actuators. The cuboid members may be disposed between guide members threaded on the cord. Actuation of the actuators applies a tension force to the cord, thereby compressing the cuboid members together to form rigid cuboid segments and maintain the casting apparatus in a rigid configuration for skeletal and joint fixation.

Abstract: In a casting apparatus for external skeletal and joint fixation, a plurality of articulated segments may comprise a plurality of cuboid members threaded on a continuous cord having distal ends connected to actuators. The cuboid members may be disposed between guide members threaded on the cord. Actuation of the actuators applies a tension force to the cord, thereby compressing the cuboid members together to form rigid cuboid segments and maintain the casting apparatus in a rigid configuration for skeletal and joint fixation.

Abstract: A system to process unstructured data is provided. An example system to process unstructured data comprises a receiver to access a source of unstructured data, an entity extractor to extract entity instances from the source of unstructured data and organize the extracted entity instances into an entity instance table, a pattern generator to generate a pattern comprising a key entity and one or more non-key entities associated with the key entity based on the entity instance table, and a dataset generator to generate a two-dimensional table based on the pattern and the entity instance table.

Abstract: A method for calculating angle domain common image gathers (ADCIGs). The method includes calculating a source wavefield pF of a seismic source; calculating a receiver wavefield pB of a seismic receiver; applying an algorithm of anti-leakage Fourier transform (ALFT) to transform the source wavefield pF to a wavenumber domain; applying the ALFT algorithm to the receiver wavefield to transform the receiver wavefield in the wavenumber domain; determining an imaging condition to the ALFT source and receiver wavefields in the wavenumber domain; computing a reflection angle ? and an azimuth angle ? of the source wavefield pF and receiver wavefield pB in the wavenumber domain; calculating the ADCIGs in the wavenumber domain; and applying an inverse fast Fourier transform (FFT) to determine the ADCIGs in the space domain.

Abstract: A channel estimation method of an Orthogonal Frequency Division Multiplexing (OFDM) system and a corresponding receiving apparatus are provided. The technical solutions use the receiving apparatus to firstly perform channel estimation in time dimension on received signals, obtain channel information of pilot points from an effective sub-carrier frequency band on a frequency domain of each OFDM symbol, obtain information of the pilot points on frequency bands outside the effective sub-carrier frequency band by adding the information of the pilot points, and then perform Inverse Fast Fourier Transform (IFFT), windowing, zero-padding, and Fast Fourier Transform (FFT) to obtain a channel frequency response, so as to obtain a channel estimation result. The technical solutions can achieve goals of restraining an edge effect and improving accuracy of the channel estimation.