587 results about "Time distance" patented technology

This invention relates to a system and method for creating an omni-focused image. Specifically, this invention relates to a system and method for electronically amalgamating images using real-time distance information to create an omni-focused image. The system of the invention comprises one or more video cameras aimed at a scene each generating a video output focused at a different distance, a distance mapping camera providing distance information for one or more objects in the scene, and a pixel selection utility wherein the pixel selection utility uses the distance information to select pixels from the video outputs to be used to generate a video display. The system is then operable to focus and amalgamate the video outputs to produce one image with multiple focal points or an omni-focused image.

There is provided herein a system and method of acquiring, processing, and imaging transient Controlled Source ElectroMagnetic (t-CSEM) data in ways that are similar to those used for seismic data. In particular, the instant invention exploits the time-distance characteristics of t-CSEM data to permit the design and execution of t-CSEM surveys for optimal subsequent processing and imaging. The instant invention illustrates how to correct t-CSEM data traces for attenuation and dispersion, so that their characteristics are more like those of seismic data and can be processed using algorithms familiar to the seismic processor. The resulting t-CSEM images, particularly if combined with corresponding seismic images, may be used to infer the location of hydrocarbon reservoirs.

A coding control unit (110) and a mode selection unit (109) are included. The coding control unit (110) determines the coding order for a plurality of consecutive B-pictures located between I-pictures and P-pictures so that the B-picture whose temporal distance from two previously coded pictures is farthest in display order is coded by priority, so as to reorder the B-pictures in coding order. When a current block is coded in direct mode, the mode selection unit 109 scales a forward motion vector of a block which is included in a backward reference picture of a current picture and co-located with the current block, so as to generate motion vectors of the current block, if the forward motion vector has been used for coding the co-located block.

A coding control unit (110) and a mode selection unit (109) are included. The coding control unit (110) determines the coding order for a plurality of consecutive B-pictures located between I-pictures and P-pictures so that the B-picture whose temporal distance from two previously coded pictures is farthest in display order is coded by priority, so as to reorder the B-pictures in coding order. When a current block is coded in direct mode, the mode selection unit 109 scales a forward motion vector of a block which is included in a backward reference picture of a current picture and co-located with the current block, so as to generate motion vectors of the current block, if the forward motion vector has been used for coding the co-located block.

The invention relates to an automatic obstacle avoiding method of a substation inspection robot. Obstacle information around the inspection robot is scanned with laser radar, and the types of obstacles are judged through an infrared temperature sensor; if the obstacles are humans or animals, the inspection robot notify the humans to leave or to dispel the animals, and there is no need to avoid the obstacles; if the obstacles remain on a set path of the inspection robot, the inspection robot executes avoiding; obstacle priorities are divided according to 'time distance' that is time that the inspection robot takes to arrive at the obstacles; the inspection robot keeps to the right according to set driving rules; upon contact with an obstacle, the inspection robot moves along the obstacle clockwise from the left of the obstacle and ends avoiding after arriving at the front of the obstacle; if unable to bypass the obstacle from the left, the inspection robot tries to bypass the obstacle anticlockwise from the right of the obstacle. The method is insusceptible to temperature and visible light, and distance and direction information detection precision is higher.

The invention provides an inducing device and an inducing method of vehicle confluence at an intersection based on vehicle and road collaboration. The device consists of a video detector set, a roadbed computer module, a wireless router, a ring road side traffic information prompting screen and a traffic inducing band, wherein the video detector set is used for sending real-time collected video data of the vehicles on a high speed arterial road to the roadbed computer module; and the roadbed computer module is used for processing the video data to generate a control signal; and the control signal is sent to the ring road side traffic information prompting screen by the wireless router to respectively display and convert the modes of an LED lamp. The inducing method comprises the followingsteps of: obtaining the real-time speeds and real-time distances of the moving vehicles by processing the traffic video flow of the vehicles on the high speed arterial road; and generating the control signal, wherein the control signal is displayed by the traffic information prompting screen and is used for controlling the mode conversion of the LED lamps of the traffic inducing band. The invention is capable of effectively avoiding the traffic accidents on the intersection of the ring road and the high speed arterial road.

The invention relates to an automatic webpage classification method based on network hot word identification. The automatic webpage classification method mainly comprises the following steps of: acquiring webpage content information by using customization crawlers, and automatically performing word classification on acquired webpage contents through an Internet keyword base and an Internet stopword base; calculating a hot value according to a keyword appearance frequency and a time distance degree, and performing initial classification on the webpage contents according to the hot value of the words through a Bayesian multidimensional classification model; performing relevance identification on non-matched word classification items in classified webpages through a relevance algorithm, and finding out non-collected hot words from the Internet keyword base, and collecting the non-collected hot words into the Internet keyword base; and reclassifying the webpage contents which cannot be classified in an initial webpage classification process through an updated Internet word base.

The invention discloses an unmanned aerial vehicle, comprising a RGBD camera, a flight control unit and a processor, wherein the processor is in connection with the RGBD camera and the flight control unit; the RGBD camera is used for obtaining the RGBD image information of a target in real time in a flight process, the RGBD image information including R (red), G (green) and B (blue) pixel information and corresponding depth information; the processor is used for processing the R,G, B pixel information in real time so as to identify the target, and obtaining the real time distance with the target according to the depth information corresponding to the target; the flight control unit is used for adjusting the flight posture of the unmanned aerial vehicle according to the real time distance, allowing the RGBD camera to perform tracking shooting on the target. According to the mode, the unmanned aerial vehicle can automatically realize target tracking shooting.

Acquisition of data by managing crosstalk interference with sector designs and unique sweeps is conducted and the resultant data are processed in 3D common receiver domain to attenuate crosstalk noise while preserving the signals for high source and receiver density acquisition designs. High-amplitude spectral amplitudes are attenuated and inter-ensemble statics or structural time delays are applied to achieve optimum filter performance. If the spectral amplitudes have been attenuated to a level consistent with non-simultaneous acquisition, conventional surface consistent processing can be performed to correct for statics and amplitude variations. A 3-point filter in different frequency bands may then be applied to remove any remaining residual crosstalk noise.

The invention discloses an arterial road two-way green wave coordination control method in an entrance single release manner. The method comprises the following steps: determining an allowable variation range of a common signal period, computing an ideal intersection spacing with different common signal period values and in different signal phase sequence arrangement ways, determining an ideal phase sequence combination and an ideal common signal period of the arterial road intersection, and determining phase difference according to the direction of the intersections relative to the position of the ideal intersection, wherein, the step of computing an ideal intersection spacing with different common signal period values and in different signal phase sequence arrangement ways comprises respectively computing the ideal intersection spacing a by a time-distance graph based on the different phase sequence combinations of various intersections and the reference intersection; all of the distances d between the positions of various intersections and the position of the ideal intersection are 1/2v.C. The method can help enlarge a selection range for the value of the ideal intersection spacing, and is more applicable to the green wave coordination control of a plurality of arterial road intersections with different intersection spacings.

In video compression systems, a system and method for reducing visible artifacts in video coding using multiple reference pictures are provided. A first GOP characterized by a “bbIbbBbbBbbB” structure and a second GOP characterized by “bbIbbQbbMbbQ” GOP structure may be used to reduce “I” frame clicking. The “B,”“b,”“Q” and “M” pictures may be inter-coded by using multiple prediction dependencies, including dependency to a next GOP “I” picture, to smooth out discontinuities across GOPs in a video sequence. Prediction dependencies may be based on a weighing scheme where assigned weights are a function of the temporal distance between reference pictures and the picture being encoded. A first video compression system may be used for the first GOP and may encode “I,”“B,” and “b” pictures. A second video compression system may be used for the second GOP and may encode “I,”“Q,”“M,” and “b” pictures.

The embodiment of the invention provides a robot charging method and a robot charging device. The method comprises the steps of detecting a path pilot signal emitted by a charging pile and a real-time distance between a robot and the charging pile, if the electric quantity of the charging pile is lower than a preset threshold; and determining a moving direction according to the path pilot signal, and determining a moving speed according to the real-time distance, and controlling the robot to move to the charging pile at the moving speed along the moving direction. The moving speed of the robot is controlled during a process that the robot moves to the charging pile according to the distance between the robot and the charging pile, so that the defect that collision or low time efficiency may be caused by too fast or too slow moving speed can be overcome. Then a charging request including the electric quantity is sent to the charging pile in response to a butt-joint indication signal, so that the situation that the robot triggers a charging requirement is determined if the charging pile receives the charging request within preset time, the charging pile is triggered to charge the robot, and the security problem caused by the condition that the charging pile is mistakenly triggered for charging is solved.

The invention provides a Bluetooth technology based garage gate passing verification method and system, and belongs to the technical field of internet of things. In order to solve the problem that in a parking storage process, the system needs to judge whether a demander entering or exiting from a garage is on the scene, at the same time eliminate incorrect trigger operation, accurately screen out a Bluetooth mobile terminal closest to a gate and release a vehicle which the Bluetooth mobile terminal is located at, the verification method and system provided by the invention introduce Bluetooth broadcast equipment, a local Bluetooth server and the Bluetooth mobile terminal which form a triangular Bluetooth interaction relationship, especially the local Bluetooth server is introduced for receiving Bluetooth information sent by the activated Bluetooth mobile terminal to ensure that the Bluetooth mobile terminal is surely on the scene, and in addition, the distance measurement accuracy is improved through two-time distance measurement of the Bluetooth mobile terminal and the local Bluetooth server, so that the screening is more accurate and effective.

The invention discloses a collision avoidance control method for automatic driving. The method comprises the steps that when it is detected that an obstacle exists in a planning driving path of an automatic driving vehicle, the collision time of the automatic driving vehicle and the obstacle is calculated; if the collision time is smaller than a set safety threshold value, a safety collision avoidance operation is executed; if the collision time is smaller than or equal to a set emergent braking threshold value, an emergent braking operation is executed; the relative speed of the automatic driving vehicle and the obstacle is calculated; if the relative speed is larger than or equal to a common braking threshold value, a common braking operation is executed; if the relative speed is largerthan a vehicle following cruising threshold value, the real-time distance between the automatic driving vehicle and the obstacle is calculated, and if the real-time distance is longer than a minimum line changing distance, a line changing operation is executed; otherwise, a vehicle following cruising operation is executed. According to the collision avoidance control method for automatic driving,overall planning is conducted for different complex working conditions, an optimal collision avoidance behavioral mode is given based on a vehicle self-state under different working conditions, the method is suitable for a working condition that the vehicle speed of the automatic driving vehicle is 60 km/h or below, and the safety of efficient vehicle driving can be achieved.

An adaptive cruise control system for a motor vehicle includes a forward looking object detecting arrangement for simultaneously detecting several target objects moving in the predicted path and adjacent paths of the equipped vehicle. The detecting arrangement is arranged to continuously monitor velocity and distance to each of the target objects, and a processing arrangement processes signals from the detecting means to provide information of distance to and relative speed of vehicles travelling in front of the equipped vehicle. The processing arrangement repeatedly generates velocity control signals based on the information of distance to and relative speed of vehicles travelling in front of the equipped vehicle. An arrangement controls velocity of the vehicle in response to the control signals from the processing arrangement. The processing arrangement calculates a distance in time from the equipped vehicle to a virtual target vehicle, the distance to and velocity of the virtual target vehicle being calculated on basis of the number of vehicles in the group, the spread in distance of the group, and thus the vehicle density of the group, and the variability of positions in the group, such that the algorithm of the processing means decides from the above parameters on the allowed deviations in time distance, wherein the processing arrangement is arranged to produce a signal to the velocity control arrangement based on the calculated distance in time between the equipped vehicle and the virtual vehicle.

A motion vector detection apparatus is configured to calculate a temporal distance between a frame to be coded and each of a plurality of reference candidate frames referred to by the frame to be coded. The motion vector detection apparatus searches for a candidate motion vector between the frame to be coded and each the plurality of reference candidate frames and detects a motion vector for the frame to be coded from the candidate motion vectors. In searching for and detecting a candidate motion vector, the motion vector detection apparatus changes an amount of the calculation performed during the detection of a candidate motion vector according to the calculated temporal distance between the frame to be coded and the reference candidate frame, and a coding type of the reference candidate frame.

The invention belongs to the technical field of unmanned aerial vehicle regulation and particularly relates to a no-fly zone unmanned aerial vehicle early-warning method. The method comprises the steps of firstly, acquiring a certain number of longitude and latitude coordinate points of an unmanned aerial vehicle flying in a current time period, through coordinate transformation, transforming the points to corresponding plane coordinate points in a rectangular plane coordinate system, then, using an improved least square method to conduct curve fitting on corresponding discrete plane coordinate points, fitting a flight path of the unmanned aerial vehicle in this period, finally, obtaining a tangent line of a current point of a fitting curve, and judging whether or not the unmanned aerial vehicle can enter a no-fly zone by judging whether or not the tangent line is intersected with an electronic fence for describing the no-fly zone. If yes, real-time distance between the current point and the no-fly zone is obtained and an alarm is given in time, and if not, prediction for the next moment is carried out. The no-fly zone unmanned aerial vehicle early-warning method has a wide application prospect in the field of civilian unmanned aerial vehicle regulation.

The invention relates to a multi-video coding and decoding method and a device. The method mainly comprises the following steps that: firstly, the reference distance between a reference image and a current image is determined according to the time distance and the space distance between the reference image and the current image; a reference image with at least one frame adopted by the current image is chosen and determined according to a reference distance of each candidate reference image and the reference image is adopted to code and decode the current image. Therefore, the invention can realize the optimal predicting effect by adopting the image in a current reference cache under the circumstance that an additional reference cache is not necessary, thereby raising the multi-video coding and decoding efficiency.

The invention discloses a space locating method that is based on a network of planar dual-rotation laser transmitters, the rotation of three or more than three rotating transmitters are driven by an alternate current servo motor, the rotating transmitters that have two linear laser devices arranged on the head part transmit laser signals continuously to the surrounding space, the time distance of OZ pulse between a laser peak position that is sampled by a receiver module that takes a photocell as a sensor and a time origin is converted into a rotating angle of a laser plane, and consequently, the equation of the laser plane where measured points are positioned is deduced, an equation of a straight line that runs through the measured points is further obtained, an equation set is built according to the intersection method of multiple lines, and finally the equation set is solved by the least square method, thus obtaining the coordinate positions of the measured points. The space locating method avoids object aiming when measuring, and improves measuring speed and efficiency.

The invention discloses an intelligent shopping-guiding shopping cart system. The intelligent shopping-guiding shopping cart system comprises a shopping cart carrier, a three-dimensional environment perceiving module, a camera, a master control module, an intelligent identification module and a display screen, and the three-dimensional environment perceiving module, the camera, the master control module, the intelligent identification module and the display screen are arranged on the shopping cart carrier. The three-dimensional environment perceiving module is used for monitoring three-dimensional environment real-time distance measurement of obstacles surrounding the shopping cart, and sending real-time distance measurement information to a master control system; the camera is used for acquiring the human body characteristic information of a user who uses the shopping cart; the intelligent identification module is used for identifying information of goods which the user puts into the shopping cart; the master control module is used for carrying out following control and shopping-guiding control on the shopping cart, and providing shopping settlement and payment; and the display screen is used for providing a human-cart interaction interface. By employing the intelligent shopping-guiding shopping cart system, only by one shopping cart, intelligent services such as intelligent shopping-guiding, independent following, online payment and the like of the shopping cart can be achieved, and problems that goods in the market are difficult to find, people paying the goods are crowded, the manpower cost is large, the anti-theft performance of bar codes is poor and the like are solved.

The invention discloses a green wave coordination control method for an artery facing to a running speed section. The green wave coordination control method comprises the following steps of: collecting speed samples of vehicles running on the artery; setting a normal variable section of the running speed; setting a mean design vehicle speed in a green wave coordination control manner; generating green wave coordination control alternative offers of the artery; evaluating the alternative offers according to distribution of the running speed samples; selecting an optimal green wave coordination control alternative offer of the artery; and drawing a green wave band time-distance graph and a running speed-green wave band width curve. The green wave coordination control method for the artery provided by the invention can meet the green wave coordination control requirements of a motorcade within a certain running speed section to the greatest extent, so that the vehicles of the motorcade in the running speed section can be located within green wave band width of the artery as far as possible; and the adaptability, robustness and the like of the green wave coordination control alternative offer of the artery can be improved.