89results about How to "The generation method is simple" patented technology

The invention provides a method for barrier perception based on airborne binocular vision. The method comprises the following steps of setting a coordinate system of an airborne binocular vision camera, calculating a formula for conversion between the coordinate system and computer image coordinates of an image obtained by the airborne binocular vision camera according to the coordinate system, wherein the airborne binocular vision camera comprises a left camera and a right camera, extracting characteristic points of an image obtained by the airborne binocular vision camera, carrying out a characteristic vector description process on the characteristic points, carrying out stereo matching of left and right images according to characteristic vectors of the characteristic points to obtain preliminary matching point pairs, eliminating error matching in the preliminary matching point pairs to obtain final matching point pairs, creating a disparity map according to the final matching point pairs, and carrying out barrier perception according to the disparity map. The method for barrier perception based on airborne binocular vision has the advantages of strong adaptability, good instantaneity and good concealment performance.

The invention discloses a method for generating a remote sensing image quick view under Linux environment and belongs to the technical field of remote sensing image processing. The method comprises that (1) an image of a band sequence (BSQ) format is generated to an image of a tagged image file (TIF) format and (2) a quick view file of a joint photographic experts group (JPEG) format is generated, wherein the step (1) comprises of a, linear mapping, b, pretreatment of decimal part of image data, c, cutting of image data in accordance with a threshold, d, histogram equalization and e, generation of an image file of the TIF format. The method has the advantages of being simple and easy to operate. The generated quick view can describe data information of a current wave band of a hyperspectral image accurately, the method is used for processing 8-position unsigned char type data converted from 32-position single precision floating point type data, and the quantification method has low noise.

The invention discloses a generation method of a commodity anti-counterfeiting code. The generation method comprises the following steps: coding commodity identity information according to a certain preset rule to generate a unique commodity identification code; converting the commodity identification code into numeric data according to corresponding relation between a user-defined commodity identification code character and numeric data; respectively calculating by virtue of the commodity identity information and an external secret key to obtain an initial value, a parameter, a primary iteration step number and an iteration interval step number of a chaotic system, and carrying out iteration on an inclined chaos tent map to generate two groups of chaos sequences; respectively scrambling ciphertext characters in the corresponding relation among numeric data, user-defined numeric data and the ciphertext characters by virtue of a location changing scrambling rule before or after the sequencing of two groups of the chaos sequences to generate commodity anti-counterfeiting numbers, and combining to generate the commodity anti-counterfeiting code. The generation method of the commodity anti-counterfeiting code is simple and feasible, has very high security and does not easily hacked, and the generated commodity anti-counterfeiting code has uniqueness and unforgeability.

The invention discloses a method for generating a commodity anti-counterfeit two-dimensional code, which comprises the following steps: coding commodity identity information to generate a unique commodity identification code; converting the commodity identification code into numerical data and switching data; the initial value, parameters, initial iterative steps and iterative interval steps of the chaotic system are calculated by using commodity identity information and external key respectively, and the chaotic sequence is generated by iterating the Chebyshev chaotic tent map. According to the switching data, a certain operation is selected respectively, and the cipher characters in the corresponding relation table between the user-defined numerical data and the cipher characters are scrambled by using the scrambling rule of the position change before and after the chaotic signal sorting, thereby the commodity anti-counterfeit number is generated, and then the commodity anti-counterfeit two-dimensional code is combined to generate the commodity anti-counterfeit code. The method for generating that commodity anti-counterfeit two-dimensional code provided by the invention is simpleand feasible, has strong safety, is difficult to crack, and the generate commodity anti-counterfeit two-dimensional code has uniqueness and non-forgery.

The invention discloses a method for generating a metamorphic test case based on an adaptive random strategy, and aims at randomly automatically generating a test case based on an adaptive strategy. The method comprises the steps of randomly generating a first group of original test cases; generating additional test cases according to metamorphic relation; forming a selected test case through the two cases; dividing an input field to obtain a subfield without being covered with the selected test case; generating a plurality of test cases randomly in the subfield; selecting one group of test cases as the candidate original test cases; generating the additional test cases according to the metamorphic relation; then selecting the test cases with the maximum distance as the next group of text cases according to the distance from the candidate test cases to the selected test cases and the distance from the candidate original test cases to the additional test cases. The test case generation method is simple and clear; the dispersion, effectiveness and coverage rate of the test cases in the input field are greatly improved.

The invention discloses a colorful commodity anti-counterfeiting code generating method. The colorful commodity anti-counterfeiting code generating method comprises the following steps: converting a commodity identification code for representing the unique identity information of a certain commodity into a binary data; obtaining an initial value and parameters of a chaotic system based on the commodity identity information and an external secret key through calculation, and performing iteration on a chaotic mapping to generate two groups of chaotic signal binary sequences; performing bit manipulation taking 2bits as a unit on the commodity identification code by the chaotic binary signals to generate an anti-counterfeiting number overlapped with a colorful background, and further combining the anti-counterfeiting number into the colorful commodity anti-counterfeiting code. The colorful commodity anti-counterfeiting code generating method provided by the invention is simple, feasible, high in safety, and difficult to be cracked; and in addition, the generated colorful commodity anti-counterfeiting code is has the uniqueness and unforgeability.

The invention discloses a method for generating a character type commodity anti-counterfeiting code. The method comprises the following steps of converting a character type commodity identification code for representing unique identity information of a commodity into a binary sequence; utilizing the identity information of the commodity and external keys to compute in order to obtain initial values, parameters and extraction intervals of a chaotic system and generating two groups of chaotic signal binary sequences after iteration of chaotic mapping; and carrying out grouping the binary sequences in 7bits, generating a commodity encryption value through the first 3bits while carrying out corresponding mapping and coding and two bit operations on the latter 4bits in 2bits according to a user-defined 2bits encoding rule correspondence and a user-defined bit operation rule correspondence, and obtaining a character type commodity anti-counterfeiting number according to the correspondence between the user-defined commodity encryption value and a commodity encryption number in order to be combined to the character type commodity anti-counterfeiting code. The method for generating the character type commodity anti-counterfeiting code has the advantages of strong security and difficulty in cracking, and the generated commodity anti-counterfeiting code has uniqueness and unforgeability.

The invention relates to a method for generating a practical multidisciplinary design optimization model automatically, which comprises the following steps of: first, establishing an integrated product optimization model according to design requirements; second, filling in a 'correlation' matrix D according to the inclusion relation between functions and optimization variables in the integrated product optimization model; third, filling in a 'coupling' matrix C according to the inclusion relation among functions in the integrated product optimization model; fourth, filling in a 'time' matrix T according to time taken for calculating functions in the integrated product optimization model; fifth, carrying out automatic task division by a genetic algorithm according to the matrixes to obtain one main task and a plurality of subtasks; sixth, generating an MDO (Multidisciplinary Design Optimization) model according to the task division scheme. The method supports the computer based automatic generation of the MDO model, avoids the excessive independence on experience of designers, can obtain the most reasonable MDO model, and has the characteristics of good simplicity and practicality, wide application and the like.

The invention discloses a millimeter wave large-scale MIMO (Multiple Input Multiple Output) channel simulation system. The system comprises a shielding device, wherein a large-scale MIMO system, a MIMO channel simulator and a channel and equipment control device are arranged outside the shielding device; a three-dimensional spherical probe device is arranged in the shielding device; the large-scale MIMO system is connected with the MIMO channel simulator; the MIMO channel simulator is connected with the three-dimensional spherical probe device; and the channel and equipment control device communicates with the three-dimensional spherical probe device and the MIMO channel simulator respectively. A channel space mapping method is adopted to realize space separation and mapping of beam signals, and an antenna-based subchannel is mapped into a space angle direction-based subchannel, thereby reducing the number of analog subchannels, simplify a channel generation method at the same time, effectively reducing simulator resources and lowering the cost.

The invention provides a validation method for a gyro-free inertial navigation system based on a given angular acceleration. Sensor data and path data are acquired through the angular acceleration and forward acceleration of a given carrier and are used for validating a navigation system solution model. According to a path generation method disclosed by the invention, a movement path of an object can be very intuitively planned, and the shape of the movement path can be given in advance; the pose data are generated by only giving the forward acceleration and angular acceleration of the carrier, the position coordinate of the carrier in a space can be obtained by acceleration integration and projection, and the sensor data and path data can be obtained. Compared with other data generation methods, the method disclosed by the invention is simple, and the condition that the sensor data do not exist is avoided.

Disclosed in the invention is a generating apparatus for a two-dimensional code with a changeable coloring pixel zone. The generating apparatus is composed of a data reading module, a bit stream generation module, a position determination module, and a drawing module. To be specific, the data reading module is used for reading to-be-coded binary data and a preset pixel compression ratio. The bit stream generation module is used for generating a bit stream sequence including a functional graph code and an effective data code according to the read to-be-coded binary data. The position determination module is used for determining a position of binary data of a current bit in a two-dimensional code graph and sending the determination result to the drawing module. The drawing module is used for receiving the determination result from the position determination module and drawing a deep color pixel zone with a reduced area based on the preset pixel compression ratio for a binary bit corresponding to the to-be-coded binary data in a non-position detection graph according to the determination result. With the provided generating apparatus, a color data module area of a generated quick response (QR) code can be reduced and thus a blank area of a QR code graph can be increased, so that embedding into a LOGO or background pattern can be realized conveniently and thus the viewable area of the LOGO or background pattern can be increased.

The invention provides a generating method, receiving method and receiving device of a leading signal. The leading signal is generated by the time domain constant modulus sequence, including a full time domain structure of the basic segment and the repeating segment; the leading signal is used to perform delay autocorrelation leading symbol capture on one or more baseband signals, so as to intercept all or part of the signals containing the known sequence and the filling sequence of the leading signal under the corresponding bandwidth; and the signals are used for performing frequency offset estimation in the time domain or frequency domain with the known sequence and filling sequence under the bandwidth; timing synchronization is performed, whether an expected received signal is in the received signal or not is confirmed, and the bandwidth value is confirmed; therefore, the peak to average power ratio PAPR is lowered, and the generated leading signal can be applied to a single carriercommunication system. Because the modulator end does not need the discrete inverse Fourier transform IFFT module, the generating method of the leading signal is simplified on the premise of guaranteeing the excellent performance of the system, and the difficulty and complexity are reduced.

Embodiments of the invention provide a report generation method and apparatus. The method comprises the steps of obtaining report configuration parameters input by a user, and generating a report according to the obtained report configuration parameters.

The invention discloses a Chinese character commodity anti-counterfeiting code generation method, which comprises the following steps of: performing numeric data and 8bits binary conversion on a Chinese character commodity recognition code A for representing unique identity information of a certain commodity; obtaining a binary sequence through binary supplement operation, obtaining an initial value and a parameter of a chaotic system through calculation, obtaining chaotic sequences X1 and X2 through extraction starting positions, extraction interval numbers and chaotic iteration, scrambling the binary sequence sum through utilization of position change rules before and after descending sort of the sequences X1 and X2, and obtaining a scrambled binary sequence sum; and respectively grouping the binary sequence and the middle elements in the forward direction by taking five elements as units, respectively recombining odd and even grouping sequences to generate commodity anti-counterfeiting numbers, and further generating the Chinese character commodity anti-counterfeiting codes in a combined manner. The Chinese character commodity anti-counterfeiting code generation method providedby the invention is simple and feasible, has strong security and is not easy to crack, and the generated Chinese character commodity anti-counterfeiting code has uniqueness and unforgeability.

The invention provides a method and device for generating files of an MDF format and relates to the field of recording of vehicle-mounted data. The method comprises the steps that S1, description information of a fixed part is established according to the MDF file format, the fixed part comprises the part from an initial IDBLOCK to CNBLOCK; S2, measured data received from an ECU is temporarily stored in a chain table according to a first preset period; S3, measured data in the chain table are converted in a double-precision floating-point format according to a second preset period, and converted data are filled into the MDF file format to obtain files of the MDF format; the second preset period is N times of the first preset period. The files of the MDF format generated through the method are simple in generating method, meet industrial standards, can be applied to relative cheap interface tools such as PCAN, and the cost of the generating device is lowered.

The invention discloses a Chinese character encrypted commodity anti-counterfeiting code generation method, which comprises the following steps of: performing numeric data and 8bits binary conversionand binary combination operations on a Chinese character commodity identification code A representing unique identity information of a certain commodity to obtain a combined binary sequence PB; calculating to obtain an initial value, parameters, an extraction starting position and an extraction interval number of of a chaotic system, and carrying out chaotic iteration to obtain a chaotic sequenceY, scrambling a binary sequence PB by utilizing a position change rule before and after descending sorting of the sequence Y to obtain a scrambled binary sequence, and grouping the binary sequence bytaking eight elements as units in sequence in a forward direction; and respectively splitting and recombining the grouped sequences to generate commodity anti-counterfeiting numbers, and combining thecommodity anti-counterfeiting numbers to generate a commodity anti-counterfeiting code. The Chinese character encrypted commodity anti-counterfeiting code generation method is simple and feasible, has high safety and is not easy to crack, and the generated commodity anti-counterfeiting code has uniqueness and unforgeability.

The invention discloses a data generation method and device for a building information model (BIM). The method comprises the following steps: carrying out tree decomposition on the building information model (BIM) according to a step-by-step subdivision mode; carrying out BIM data definition on each type of decomposed data; carrying out BIM data objectification on the data defined by the BIM data;adding a global unique identifier GUID to each BIM data object; setting parameters and information for the BIM data object; establishing a relationship for the BIM data object; and adding the BIM data object into a BIM database. According to the method, the BIM data are classified and defined according to the characteristics of the building information model BIM data, and data definition and useof the BIM are standardized; the tree form decomposition of the BIM data is carried out, the classification definition of the service data is carried out, and then objectification is carried out, so that the complexity of the service data of the BIM is simplified; BIM data is managed by adopting a database file, so that the problems of large BIM data size and low use efficiency are solved.

A method for generating noncontact measurement feature points solves measurement errors caused by pasting feature points in the noncontact measurement. The method comprises steps of: 1, projecting a first laser spot array onto a first measurement area on the surface of an object to be measured, wherein two laser spot arrays mutually contain three or more non-collinear laser spot feature points; 2, using the position, the size and the direction information of each laser spot feature point as a unique identification mark in plurality of imaging view angle; 3, deleting, by using a circular constraint algorithm, all other illegal feature points of non-laser spot feature points in the result of the laser spot feature point algorithm extracted in the step 2, and completing identical point matching of a laser spot center by means of the feature matching of an SIFT algorithm; and 4, repeating the steps 1 to 3 to complete the generation of measurement feature points in the measurement area each time. The method is simple in feature point generation and easy to operate. The feature points and the actual points are small low in errors and have density matching the laser light spot array.

The invention discloses a commodity anti-counterfeiting code generation method based on Chinese character encryption. The method comprises the following steps: carrying out the numerical type data and8bits binary conversion and binary extraction of a Chinese character commodity recognition code A representing the unique identity information of a certain commodity, and obtaining binary sequences PB1 and PB2; carrying out chaos iteration to obtain a chaos sequence Y, carrying out scrambling on the binary sequences PB1 and PB2 according to the position change rule before and after descending sorting of the front and rear sequences in the sequence Y to obtain scrambled binary sequences, grouping elements in the binary sequences with three elements in the forward direction and five elements inthe forward direction respectively, and grouping the scrambled binary sequences with five elements in the reverse direction; and sequentially recombining the grouping sequences to generate a commodity anti-counterfeiting number, and combining to generate a commodity anti-counterfeiting code. The commodity anti-counterfeiting code generation method based on Chinese character encryption provided bythe invention is simple and feasible, has strong security and is not easy to crack, and the generated commodity anti-counterfeiting code has uniqueness and unforgeability.

The invention belongs to the motion control field and especially discloses a point location motion S curve generation method. The method comprises the following steps of S1, fitting a S curve position-time relation into a 5 power polynomial function through nondimensionalization, and carrying out differential on a position-time function so as to acquire a speed-time function; carrying out differential on the speed-time function so as to acquire an accelerated speed-time function; S2, requiring to satisfy a condition 1 and a condition 2 and acquire 6 function coefficients through the condition 1 and the condition 2; and S3, through a conversion relation between a dimensionless value and a real value, calculating a function of a real value position relative to time and calculating a function of a real value speed relative to the time. In the invention, the S curve generation method is simple, a speed function is a 4 power function and an accelerated speed is a 3 power function, which shows that the curve is smooth and soft; for a set value, accelerated and decelerated distances can be converted into accelerated and decelerated time, and in an occasion which is strict to the accelerated and decelerated distances, accurate accelerated and decelerated distance control is acquired.

The invention is applicable to the technical field of image processing and particularly relates to a sculpture model generating system which generates a corresponding sculpture model according to image data and comprises an information reading module, a data processing module, a model mother blank processing module, and a sculpture model generating module, wherein the information reading module is used for reading the model configuration information of a to-be-generated sculpture model; the data processing module is used for acquiring a depth map corresponding to the image data; the model mother blank processing module is used for generating a model mother blank with a depth interval according to the model configuration information and dividing the model mother blank into cells in one-to-one correspondence with all pixel points in the depth map according to the depth map; the sculpture model generating module is used for determining the depth position of a corresponding cell in the depth interval according to the depth value of the pixel point, moving the cells to generate the sculpture model according to the depth positions, and generating customized sculpture models according to the model configuration information put forward by different consumers, and the sculpture model is high in accuracy.

The invention relates to a preparation method of a Pt3Ni@PtNi2 core-shell structure nanowire. The method comprises the steps that platinum bis(acetylacetonate), nickel acetylacetonate, glucose and cetyltrimethylammonium chloride are added into 5 ml of oil-ammonia for dissolving, the solution is subjected to ultrasonic treatment in an ultrasonic machine to be mixed to be uniform, the mixed solution reacts in an oil bath at the temperature of 200-220 DEG C, an oil bath reaction product is cleaned, and the core-shell structure nanowire is obtained. According to the method, the defects that a traditional imine preparation method is tedious in step, the reaction condition is strict, and the large-scale production cost is high are overcome. According to the core-shell structure nanowire, the catalyst generation method is simple, the catalytic effect is god, and the selectivity is high. A catalytic reaction can be conducted at room temperature and completed at one step, the stability is good, the defects that traditional distillation, reflux and other methods have tedious steps and are high in cost are overcome, the synthesized catalyst can generate aminobenzene by conducting addition on nitrobenzene through hydrogen, the phenomenon that imine is subjected to hydrogenation to generate amine is not likely to occur, and the excellent selectivity of the catalyst on hydrogen addition is embodied.

The invention relates to a turbine disc crack propagation reliability analysis method based on quasi Monte Carlo sampling, which comprises the following steps of: describing the time-varying dispersibility of crack propagation by using a dual-time scale function Wiener process, and establishing a turbine disc crack propagation time-varying model; carrying out parameterized modeling on the turbine disc, carrying out sensitivity analysis to determine key geometric dimensions, considering small subsample characteristics in reliability evaluation of the turbine disc based on a probability-interval characterization method, and obtaining characterization of geometric dispersity of the turbine disc; meanwhile, in order to reduce the calculation cost and improve the calculation efficiency, adopting a quasi-Monte Carlo sampling method to generate a low-difference sequence to replace a pseudo-random number to generate a sampling point for subsequent calculation; and then, carrying out fatigue crack propagation simulation on the sampling points by adopting a finite element-based turbine disc static strength analysis and a stress strength factor-based empirical formula calculation method to obtain the probability life and reliability of the turbine disc.