39 results about "Statistical precision" patented technology

Methods of improving microfluidic assays are disclosed. Assays can be improved (better signal to noise ratio) by using sessile drop evaporation as an analyte concentration step (enhanced signal) and repeated passes of wash droplets as a means to reduce non-specific binding (noise reduction). In addition multiple massively parallel analyses improve the statistical precision of the analyses.

The invention relates to intelligent video surveillance and image processing and analysis, discloses a pedestrian volume statistical method, and comprises establishing a plurality of Gaussian counting models by utilizing training video sequence image samples with people number marks and performing real-time pedestrian volume statistics on videos with unknown people numbers based on the plurality of Gaussian counting models. The pedestrian volume statistical method particularly comprises the steps of firstly extracting a prospect moving target according to moving target detection, extracting eigenvectors according to moving target area and characteristics including lengths and widths of an external rectangular frame, then establishing the plurality of Gaussian counting models based on an eigenvector set, and finally analyzing numbers of pedestrians contained in an unknown moving target area based on the plurality of Gaussian counting models to achieve pedestrian volume statistics. By establishing the plurality of Gaussian counting models, the pedestrian volume statistical method avoids difficulties caused by identification and tracking of singe pedestrian, can perform statistics of the numbers of the pedestrians contained in moving target areas in different detection areas well, improves statistical accuracy of the numbers of the pedestrians, and then improves accuracy of the pedestrian volume statistics.

The invention aims at providing a video traffic flow counting technique based on a virtual coil technology. The video traffic flow counting technique based on the virtual coil technology can be applied to the field of intelligent transportation monitoring, the problem of vehicle sheltering and the problems of repeat counting and counting missing, caused by driving lane changing, even driving line pressing and the like, are solved effectively, the vehicle misjudgment caused by foreground breakage is reduced, the repeat counting is avoided, and the counting accuracy in multiple experimental scenes is stable and is over 96%; and the video traffic flow counting technique has the advantages of extensibility, independence, easiness in operation and the like. The technique provided by the invention comprises the following steps of (1) modeling and updating a background by using an improved ViBe algorithm, and extracting motion foreground from videos; (2) reducing error interference in the motion foreground by adopting an image preprocessing mechanism; (3) drawing virtual coils according to lanes; (4) carrying out detection, counting and sum statistics on vehicles passing through the virtual coils, and solving the problems of the misjudgment, repeat counting and counting missing of the vehicles; and (5) integrating the results, obtained in the step (1) and the step (2), and an analytical result on the result obtained in the step (4) to extended application.

A method for designing width of rough rolling strip steel includes applying short time mode of fine rolling natural broad-siding to calculate out natural broad-siding of fine rolling then confirming natural broad-siding allowance according to heat rolling width and prediction accuracy of fine rolling natural broad-siding, finally confirming design value of rough rolling width of current strip steel according to width allowance and natural broad-siding of fine rolling.

The invention belongs to the technical field of mine production management, and particularly relates to an open-pit mine mining and stripping quantity calculating method utilizing plane image aerial-photographing. The method includes utilizing plane image aerial-photographing technology; performing plane flight path planning and designing according to geographic conditions of an open-pit mine; checking a digital camera carried by a plane; controlling the digital camera for aerial photographing and image acquiring and storing at the same time; recording plane position and posture information provided during photographing; building an open-pit mine earth surface three-dimensional point cloud model. The open-pit mine earth surface three-dimensional point cloud model can be built without adopting a bundle adjustment method of control points, an open-pit mine earth surface irregular triangular net model is built, mining quantity and rock discharging quantity are automatically measured and recorded, accumulated volume values of the open-pit mine earth surface triangular net model at different times are subtracted to accurately calculate earth-rock quantity of an excavating or backfilling body, calculating of open-pit mine mining and stripping quantity is realized, open-pit mine measuring work efficiency is improved, and statistical accuracy of mining and stripping quantity is improved.

The invention relates to a method for performing copyright management by utilizing digital audio watermarking. The method comprises the following steps: embedding a watermarking signal in a logarithm domain of the audio signal energy so that the decoding is unrelated to the amplitude; reasonably designing the frame structure of the embedded watermarking information so that the timing statistical accuracy of a de-embedded result reaches second, and the decoding time accuracy and decoding accuracy rate are not influenced under the operations of cutting, splicing and inserting other audio signals and the like; encrypting the embedded information by an RSA (Asymmetric Algorithm) digital signature algorithm so that the embedded information has security; and effectively reducing interference of the carrier audio to the watermarking information by the embedding algorithm by using the relativity of the short-time stability of the audio so as to obviously improve the success rate and accuracy rate solved by the watermarking. In the method, a digital watermarking technology is introduced to identify the audio materials in a medium library, and then the broadcast flow or audio file are decoded and analyzed to obtain the service conditions of materials, thereby acquiring copyright payment information.

A method for representatively sampling a subsize rock model structural surface sample sampled based on layering probability comprises the following steps of: (1) orientationally counting and measuring fluctuation amplitude of a raw rock structural surface sample, respectively calculating a roughness coefficient characteristic constant JRC and a statistic average value of each measuring segment of the scale by a formula; (2) calculating based on quartile division to obtained JRC average values and variances of three intervals: P0-25, P25-75 and P75-100; and (3) setting a relative permissible error of an average value of samples and an ensemble average value to be gamma, and setting confidence to be 95%. The said calculated data is substituted into a layeredly sampling formula to obtain a total sample size, and the sample size of each layer is determined based on the layer weight: W0-25=1 / 4, W25-75=1 / 2 and W75-100=1 / 4. The method provided by the invention can effectively satisfy statistic precision requirement of the shear strength dimension effect of the rock model structural surface, and can raise test statistic precision.

The invention discloses a vehicle counting method based on movement track, and relates to the field of traffic detection. The method of the invention comprises the following steps: stable feature points are selected and tracked; clustering is carried out according to the change of relationship between the same-time relative distances of the track of the stable feature points in a real space; and the count value of a vehicle counter is not updated when the variance of the same-time relative distances is smaller than a preset threshold, and 1 is added to the count value of the vehicle counter when the variance of the same-time relative distances is greater than the preset threshold. According to the invention, the vehicle track in a shot road video image is extracted and processed to obtain the relative distances of the track at the same time, and the number of vehicles in the video image is determined according to the change relationship between the same-time relative distances. Therefore, the influence of the environment in the vehicle counting process is avoided, the limitation that only vehicles of a single model can be counted is eliminated, and the precision and efficiency of vehicle counting are improved.

The invention discloses a visual analysis visitors flow rate statistical method and visual analysis visitors flow rate statistical equipment based on laser detection lines. The visual analysis visitors flow rate statistical method comprises the following steps of acquiring visitors access videos, which comprise two laser lines, of a certain passageway from a position above the head of a user by using a network camera; extracting the left laser line and the right laser line and using the left laser line and the right laser line as a left detection line and a right detection line to generate a height contour line; judging whether visitors pass through the passageway or not; counting the flow rate of the visitors who come in and go out from the passageway after information about access of the visitors is confirmed in a matched manner; and recording current time so as to count the number of the visitors of the certain passageway in a certain period and obtain the number of the visitors in a place through the difference between the number of the visitors of the beginning of the period and the number of the visitors of the ending of the period. By the visual analysis visitors flow rate statistical method, the number of the visitors who come in and go out from the certain passageway can be detected automatically and accurately. The visual analysis visitors flow rate statistical equipment consists of a plurality of detection units; and each detection unit comprises video acquiring equipment, laser equipment, network equipment, a computer or embedded processing equipment. By the visual analysis visitors flow rate statistical equipment, the visitors flow rate statistical precision is improved, the visitors flow rate statistical speed is increased, and walking directions of the visitors can be detected. The visual analysis visitors flow rate statistical equipment can be widely used for various entrances or public places.

The invention relates to public traffic passenger flow acquiring, and in particular relates to a passenger flow trends acquiring device and system based on a multisensor in public traffic passenger flow acquiring. The invention provides a passenger flow trends acquiring device based on a multisensor, which comprises a soft body arranged at the exit and entrance, wherein a pressure sensor, a firstwireless communication module and a microprocessor are arranged in the soft body; the pressure sensor is arranged in an array mode so as to form a pressure sensor array; the pressure sensor and the microprocessor are connected; and the microprocessor and the first wireless communication module are connected. The invention also provides a passenger flow trends acquiring system based on a multisensor. The passenger flow trends acquiring device and system based on a multisensor have the benificial effects: getting on or off a bus is distinguished through a press outline of the pressure sensor array, and the statistical accuracy of passenger flow is improved.

The invention provides a spatial data gridding statistical method and a spatial data gridding statistical device, which relate to the technical field of geographic information and comprise the following steps of: selecting a to-be-counted target hierarchy in a candidate hierarchy set; Carrying out gridding calculation on a target statistical range by utilizing a preset grid coding system to obtaina grid code and a broken net mark proportion of each space vector element in the target statistical range in the target hierarchy; Determining the total standard grid number according to the grid codes of the plurality of space vector elements and the broken net mark proportion; And determining an area statistical result of the target statistical range according to the total standard grid numberand the standard grid area. The invention provides a spatial data gridding statistics method and device, on the basis of traditional gridding statistics analysis, the grid code and broken net mark proportion of each spatial vector element in a target statistics range in a target level is calculated, and the statistics precision is improved on the premise that the gridding statistics efficiency isensured.

The invention discloses a video identification method and a video identification system. The video identification method comprises the following steps: segmenting a video according to a lens segmentation technology so as to obtain multiple lens fragments, and performing face identification on the lens fragments so as to identify lens fragments where a specific person is disposed. According to the technical scheme provided by the invention, through combination of a face identification technology and the lens segmentation technology, various limitations of a conventional mode of video identification only by use of the face identification technology can be overcome. According to the invention, it is the lens fragments rather than frames that are taken as identification objects. In a whole lens segment, the lens fragment where the specific person is disposed can be identified as long as an identifiable face appears once no matter whether the profile and the back side of the specific person can be identified. The lens fragment where the specific person is disposed can be marked and correlation data of the specific person can be counted according to the identified face, such that the identification precision of the specific person is improved and the marking precision and the statistical precision are improved.

The invention discloses a high-performance data processing system based on memory calculation. The high-performance data processing system comprises a data collecting interface defining module, a data real-time collecting module, a data memory storage module and a data processing module. By means of the data collecting interface defining module, a data table is selected, related fields of the data table are automatically extracted, and a user defines a compression mode according to the type and range of the fields. The data real-time collecting module is used for extracting related data from a data source according to metadata defined by the data collecting interface defining module, wherein the metadata normally refer to data in a defined data format, and the data source refers to specific service data and normally a relation database of an enterprise service system. The data memory storage module is used for storing the data in a memory through a dictionary mode and a shaping, coding and compressing algorithm in a syllable code mode. The data processing module comprises an SQL analyzing module and is used for extracting records in statistics according to needs. According to the high-performance data processing system based on memory calculation, the data are stored in the memory in a byte mode through compression and reconstruction on the premise that the statistical precision and speed are not influenced.

The invention discloses a binocular infrared photography-based bus passenger flow counting device and method. The binocular infrared photography-based bus passenger flow counting device comprises a calculation apparatus, an infrared camera A, an infrared camera B and a counting display apparatus, wherein the infrared camera A and the infrared camera B are located in two different positions above a photographed point respectively; and the calculation apparatus collects videos from the infrared camera A and the infrared camera B in real time. The method comprises the steps of running a binocular vision algorithm by the calculation apparatus; calculating depth information of points on images from the two different cameras; drawing a contour line; extracting a human head quantity contained in the image in combination with human head shapes and priori knowledge of a distribution law of the contour line, wherein the extracted human head quantity is within a predetermined time; and tracking the human head quantity by the infrared camera A or the infrared camera B. According to the counting device, the statistical precision is improved and the situations that human head identification rate is low and children are shielded due to insufficient light are avoided.

A method of quickly counting the transportation vehicles in a region belongs to the technical field of vehicle satellite positioning. The method involves a regional grid index file, a satellite positioning data receiving service module, and a transportation vehicle region statistical service module. First, a region needing statistics is preprocessed, and a regional grid index file is generated. Then, the satellite positioning data receiving service module receives transportation vehicle positioning data sent in real time through Socket, and sends the transportation vehicle positioning data to the transportation vehicle region statistical service module. The transportation vehicle region statistical service module reads the regional grid index file, and matches the GPS data received from the satellite positioning data receiving service module to a region. By using the method of the invention, while there is certain loss in the accuracy of statistics, computation on the regions to which transportation vehicle GPS points belong only needs a few CPU clock cycles, and the computing speed is increased greatly.

The invention discloses a statistical method of a semi-porosity based on a close-range photogrammetric technology. The statistical method comprises the steps of performing quick non-contact measurement on the pre-splitting surface and the smooth blasting surface of a step after blasting to obtain the spatial three-dimensional information of the pre-splitting surface and the smooth blasting surface, and building a step-surface three-dimensional DEM model, dividing the hole marks of a pre-splitting hole and a smooth blasting hole by use of an image recognition technology and dividing the length of one half of each blast hole according to the unevenness of the hole marks on the pre-splitting surface and the smooth blasting surface, collecting the semi-hole information of all the blast holes, and calculating to obtain the semi-porosity for evaluating the blasting effect. The statistical method of the semi-porosity based on the close-range photogrammetric technology is capable of greatly improving the statistical accuracy of the semi-porosity, reducing the statistical error and reducing the operation cost; the digital close-range photogrammetric technology is adopted so that more complete information of the pre-splitting surface and the smooth blasting surface can be obtained and the information of a blasting region can be stored conveniently, and meanwhile, the reliability of evaluation on the pre-splitting and smooth blasting effects also can be improved.

The invention provides a method and device for monitoring IO time delay of a distributed file system and a storage medium, and relates to the distributed file system in the technical field of cloud storage, and the method comprises the following steps: S110, collecting io time delay real-time data; s120, obtaining the relation between the io time delay and the io size according to the collected io time delay real-time data; s130, obtaining an io theoretical time delay value according to the determined relationship between the io time delay and the io size; s140, calculating an average time delay value of io = 4kB; and comparing the average time delay value with a theoretical time delay value of io = 4kB, and if the average time delay value is greater than the theoretical time delay value, judging that the pressure of the distributed file system is too high. By utilizing the method, the data volume can be reduced on the premise of ensuring the time delay statistical precision, and an effective basis is provided for analyzing and monitoring the io of the current system.

The invention provides a measurement and calculation method for determining space boundary of a city center area. The method comprises the following steps: firstly determining measurement and calculation indexes which can reflect functional essence of the center area and can be objectively and accurately measured and calculated; then determining combined boundary values of public service facility indexes of the city center area according to the survey result of the current situation of typical cities in China; collecting raw data and drawing a spatial distribution map of the measurement and calculation indexes; and finally demarcating the space boundary of the city center area by means of repeated adjustment and check. By adopting fully rational investigation standard, statistical precision and calculation method, the measurement and calculation method provided by the invention has the advantages of obvious objectivity, measurability, high data accuracy and uniqueness; and meanwhile the confusion situation of the city center area and other city areas can be prevented so as to obtain a more accurate result.

The invention relates to the technical field of stone pile crusher intelligent monitoring, particularly to a stone pile crusher inverse insertion frequency counting device. The stone pile crusher inverse insertion frequency counting device comprises a laser sensor module, a reflective film, a data processing module and a data processing terminal, wherein the laser sensor module is arranged at thetop of the support of a stone pile crusher; the reflective film is laid at the top of the hammer of the stone pile crusher and right against the laser sensor module; laser signals transmitted by the laser sensor module can be transmitted to the reflective film and reflected and refracted by the reflective film back to the laser sensor module, the laser sensor module transmits received signals to the data processing module, and the data processing module processes the received signals and transmits results to the data processing terminal. The stone pile crusher inverse insertion frequency counting device counts the number of times of inverse insertion of the stone pile crusher through high-precision laser sensors, thereby saving detecting time, reducing personal errors, improving the pilingquality and uniformity, ensuring the piling quality of roadbed construction and greatly improving the construction efficiency.

A Time Dependent Dielectric Breakdown (TDDB) test pattern circuit, which can reduce testing time and statistically improve a precision of measurement as well as a method for testing the test pattern circuit are discussed. Typically, a test pattern circuit includes in plurality of unit test patterns. Each unit test pattern includes a capacitor connected to a stress voltage. The stress voltage is applied to the capacitor and the current flowing from the capacitor is measured over time. The dielectric in the capacitor breaks down over time and at a certain point, the current from the capacitor changes suddenly. Unfortunately, the convention test pattern circuit requires serial testing of each unit cell, and therefore, the measuring time is significant when there are many unit cells involved. The circuit allows for the measurements to take place simultaneously for all unit cells within the test pattern circuit. This greatly reduces the testing time, allows for greater amount of data to be obtained which improves the statistically accuracy, and reduces costs as well.

Disclosed are methods and apparatus to utilize virtual timing markers to improve transmission and reception of electronic or optic signals having timing markers such as zero-to-one transitions. Physical timing markers are augmented or substituted with relocatable messages containing displacements or time offsets to other physical timing markers in a reference signal waveform. Additionally disclosed are virtual timing marker methods to improve transmission performance, qualities, operation, or use, such as timing markers that can overlap other timing markers or other signal content waveforms, seamlessly span over intermittent signals, or reference the more precise underlying signal carrier waveforms as well as timing marker error detection and correction, dispersed redundant timing markers, statistical precision enhancement, concealing timing markers from jammers, subscriber access by encryption, increased signal content efficiency, and reduced multiplexing. These are beneficial in handling and relaying high precision positioning-navigation-and-timing signals, or for piggybacking them on other purpose signals.

Provided is a microblog marketing heat prediction model method, comprising the following steps: step 1, establishing a microblog marketing model resource database; step 2, calculating each factor coefficient and constant in a model equation; step 3, establishing a microblog marketing prediction model equation; step 4, using the model to predict a future microblog marketing project. The step 1 comprises using each microblog marketing project as a unit, estimating and grading dependent variables of a project, and estimating and grading each factor corresponding to the dependent variables of the project, the estimating grading of the dependent variables and estimating grading of the factors are from different indexes of a same heat measuring platform. The model resource database in the step 1 is a database which satisfies statistical accuracy and data size is sufficient enough. The factors in the step are more than two factors related to the dependent variables. The method solves problems that a prediction factor is single, correlation of independent variables and dependent variables is not high, and data sample time point is not rational existed in the technical field of TV play heat estimation.

An electronic scale comprises a carrying platform for weighing, a front anti-airflow acrylic plate, a back anti-airflow acrylic plate, a side anti-airflow acrylic plate, another side anti-airflow acrylic plate, an upper anti-airflow acrylic plate, an export type liquid crystal screen, an operation panel and a supporting table. The upper wall of the supporting table is provided with a groove, the carrying platform for weighing is placed in the groove and connected with the export type liquid crystal screen through a cable, and the operation panel is connected with the export type liquid crystalpanel through a cable. The defect that in the prior art, a side wall cover plate and a cover plate frame often collide or shake in different ways, an electronic scale shakes, and the degree of fixation and statistical precision of the electronic scale are affected is effectively avoided.

The present invention provides a statistical method and apparatus for passenger flow. The method comprises: obtaining physical coordinate information of one or more monitored areas; determining, according to the physical coordinate information, base station configuration information, and cell configuration information, information about a cell covering the one or more monitored areas; and making statistics on passenger flow of the one or more monitored areas by counting users in the cell covering the one or more monitored areas. The present invention solves the problem that to improve statistical precision, all statistical methods in the prior art require system upgrade and / or renovation; therefore, high-precision statistics can be implemented without upgrading and / or renovating the system, which makes high-precision statistics more convenient.