35 results about "Volume computation" patented technology

The invention provides a rapid volume measurement method based on a spatial invariant feature. The method comprises the steps that feature point extracting and matching and three-dimensional reconstruction are performed on acquired images; the distance proportion of the actual distances among feature points to the real world in a relative coordinate system is added in three-dimensional point cloud to serve as scale information; a Delaunay triangular mesh is built by utilizing a three-dimensional coordinate of the feature points, boundary edge detection elements are added, and an optimal datum plane is fit; the triangular mesh is projected to the datum plane according to the discrete integral thought to determine the volume of an irregular object surrounded by the triangular mesh. The measurement of the actual distances among all the feature points of an object can be completed by utilizing a camera and a ruler, and the trouble of field measurement can be omitted; meanwhile, a data structure used for detecting the boundary edge is added when the Delaunay triangular mesh is built, the peripheral datum plane constituting a boundary curve surface can be effectively obtained, and the method can be further used in volume calculation.

A system extrapolates and interpolates patient fluid intake or output parameter values and associated cumulative values over variable time intervals from a reduced set of stored fluid parameter values affecting fluid cumulative volume computation or rate of fluid intake or output computation. The extrapolation and interpolation function accomodates drip (continuing) fluid volumes as well as supplemental (non-continuing e.g., bolus) fluid volumes. A patient medical parameter data processing system provides patient medical parameter data for trend indicative display covering a time period comprising user selectable patient parameter acquisition time intervals. The system includes an acquisition processor for receiving data identifying, for a continuing infusion, rate of volume of fluid infusion into a patient, a fluid type identifier and a start time and start date of said continuing infusion. The received data also identifies for a non-continuing infusion, a total volume of fluid infusion, a fluid type identifier and a time and date of the non-continuing infusion. A data processor determines, from the received data, a cumulative total volume infusion of a particular fluid into a particular patient for a particular user selectable patient parameter acquisition time interval.

A repeatable patient-specific measurement technique. The process employs common anatomical reference points to guide the individual performing the measurements. The measurements taken are logged into a database using a standard format. A volume corresponding to the area measured is then calculated. The series of measurements can be accurately repeated during subsequent evaluations of the individual. Subsequent volume calculations are also made so that the volume of the measured region can be tracked over time. The volumetric information is then used to evaluate certain individual-specific criteria such as efficacy of weight management plan. Computer software will also present the data in a variety of numerical and graphical formats that are useful to the individual.

The invention discloses a gross segregation quantitative analyzing method of a continuous casting sheet billet that adopts an image analyzing method, belongs to the technical field of metallurgical analysis, and comprises the following steps: the structural content change of the sheet billet in the thickness direction is obtained through metalloid image analysis, the structural volume percent is converted into the mole percent through crystal lattice volume computation, a binary phase diagram of the carbon weight percent and the austenite structure mole percent is obtained through thermodynamic computation, and the structural mole percent in each analyzed region is converted into the carbon weight percent. The gross segregation quantitative analyzing method has the advantages that the analyzing method that combines the metalloid structure image analysis method with the thermodynamic computation is adopted for analyzing the gross segregation of the sheet billet, thus quantitatively analyzing the carbon gross segregation in the sheet billet, more precisely observing and analyzing the carbon content distribution in the sheet billet, and consequently providing a novel tool for examining and analyzing the gross segregation of the sheet billet.

The present invention discloses a food volume estimation method based on 3D model nesting. The method can restore a simple geometric model corresponding to foods so as to solve the estimated volume ofthe foods. The method comprises the following steps of: selecting a special model to establish a three-dimensional model library, and inputting user hand information; putting the hand and the foods to the same plane for shooting to obtain a three-view image; performing L*a*b color space preprocessing of the image, performing k-means clustering segmentation of a processing result, and obtaining animage segmentation result; performing outer contour matching of the segmentation result and the three views of the model in the three-dimensional model library, and according to the special function,calculating the matching degree of the foods and each model projection map to find out a projection map having the maximum matching degree, wherein the three-dimensional model corresponding to the projection map having the maximum matching degree is a three-dimensional model corresponding to the foods; and taking the hand as a measuring scale to determine the parameters of the matching model so as to estimate the volumes of the foods through a volume calculation formula. The food volume estimation method based on 3D model nesting can simplify the volume reconfiguration complexity to estimatethe effect of food volumes.

The invention discloses a shale transformation volume quick judging method based on microseism, which is characterized in that the method comprises the following steps: S1, aiming at a plurality of wells which have been monitored by micro-seismic field, establishing three calculation models of reconstruction volume according to field fracturing operation curves and micro-seismic characteristics; S2, calculating the effective liquid quantity on the basis of three modified volume calculation models; S3, simulating the relation diagram between different effective liquid quantity and fracture length by the discrete fracture network simulation method, that is, calculating the fracture parameters by the effective liquid quantity, and predicting the reconstruction volume in real time by the fracture parameters; S4, combined with the three models, establishing a typical control chart of effective liquid volume, typical curve, seam length and modified volume. The method realizes the real-time pre-judgement of the transformation volume through the field operation curve characteristics, and provides the corresponding fracturing design optimization adjustment direction for the completed well,the well under construction and the deployment well with similar geological conditions in the later period. The method effectively solves the problems of post-fracturing effect evaluation and fracturing operation parameter optimization.

The invention discloses an insect density statistical method based on the nearest neighbor correlation method and the Gaussian beam volume, which provides an effective method for accurately counting the density of each height layer of migrating insect. Compared with the existing methods of insect radar density statistics, this method correlates the same insect at different scanning wave positionsby the nearest neighbor method, which can effectively prevent the same insect from being counted for many times, and reduce the false alarm rate of detection. Gaussian beam is used to calculate the detection volume of radar, and the different radar detectable regions of different RCS are taken into account, so the volume calculation is more reasonable.

A system and method is provided for analyzing the movement of an object. The system is comprised of a sensor that is coupled to a processor that is configured to generate a volume that corresponds to a predefined area and the location of the object. The sensor detects the movement of the object and determines if the object's movement is within the volume. If the movement is within the volume, then an information channel is created between the volume and the user defined algorithm. The movement is then compared with the requirements of the user defined algorithm and accepted if the movement meets the requirements. Otherwise, the object's movement is discarded if the movement is not within the volume or does not meet the requirements of the user defined algorithm.

The purpose of the method is to provide a method for cutting and networking a 3D TIN (triangulated irregular network) model and calculating volume, in order to meet the volume calculation needs of anirregular shape model. The method is characterized in that: a cutting model part is judged by taking the normal vectors of a cutting surface as the judging standard; the exact volume of a vertebral body formed by each triangular patch and the origin is calculated accurately by taking the normal vector and vertex of the triangular patch as parameters; and the total volume is obtained by accumulation. Advantages of this method are compared with the existing method, this method can more accurately judge the model that a user needs, as well as more accurately calculate the model volume.

The invention discloses a method for ore-rock volume computation and a method of the same. The method comprises the steps that layered plane diagrams within an underground preset depth scope are generated, and the height difference between the adjacent layered plane diagrams is a step height; ore strips in each layered plane diagram are dispersed into blocks respectively, so that a block model within the preset depth scope is obtained; a triangular net face model is constructed according to terrains within a to-be-computed scope; the triangular net face model is dispersed into multiple rectangular faces; the distance between the center point of each rectangular face and the above triangular net face model is taken as the height of the rectangular face, so a rectangular body model is obtained; and through application of the blocks within the to-be-computed scope in the rectangular body model, an ore-rock volume can be obtained through computation. According to the invention, construction of an ore body model can be simplified; and computation of the ore-rock volume as well as the computation amount during the model construction can be reduced.

The invention discloses a calculation method for exclusion volume of a convex core-shell structure body. The method comprises the following steps of determining a particle geometric model of a core, and defining the sizes of particles of the core by adopting an equivalent diameter; calculating a particle mean caliper diameter of the core; calculating the volume of the convex core-shell structure body; calculating a surface area of the convex core-shell structure body; calculating a mean caliper diameter of the convex core-shell structure body; and calculating the exclusion volume of the convexcore-shell structure body. The method can accurately calculate the exclusion volume of the convex core-shell structure body with core particle types of ellipsoids, spherical cylinders and regular polyhedrons, gets rid of a technical constraint that a conventional theoretical method only aims at simple spherical particles, and solves the problems that a numerical simulation method can perform study only for specific particles and is low in efficiency and difficult in simulation precision guarantee, so that the calculation method for the exclusion volume of the convex core-shell structure bodyis more universal and representative.

The invention relates to the technical field of teaching aids, and particularly discloses a cuboid volume calculation exploration teaching aid for primary school mathematics teaching, which comprisesa lower box body, an upper box cover is nested above the lower box body, a stepped groove is formed in the lower box body, a magnetic attraction block is placed in the stepped groove, and a graduatedscale is engraved at the edge of the stepped groove.w An oily pen is placed on the stepped surface of the stepped groove. The beneficial effects are that: 1, students carry out study by themselves onthe teaching aid through the prompt of the operation sheet, thereby achieving the purposes of finding rules, mastering the application of an arithmetic theory and a learner, solving problems, and changing the passive learning and hard memorization dilemma of students; 2, the problems of no calculation, inaccurate calculation and no love of calculation in the calculation process of the volume of the cuboid are solved; 3, the progress is fast, students can quickly master the calculation formula of the cuboid volume, and the learning efficiency is improved; and 4, teaching is carried out throughactual operation, and the enthusiasm degree of students to mathematics is improved.

The invention relates to a simple ore block volume calculation method for calculating mineral resource reserve. According to different ore block properties, different ore block volume calculation formulas, i.e. a truncated cone volume or trapezoid volume simplified formula, are adopted, and according to calculated value A and corresponding value K, an A-K value correspondence table is prepared. Consequently, the troublesome, time-consuming and tedious work is simplified into convenient, quick and labor-saving work, the working efficiency can be increased by multiple times,the error is less, the precision is high, the requirement on the precision of mineral resource reserve calculation can be fully met, and moreover, the problem of misuse in the process of mineral resource reserve calculation can be completely avoided. The method can be used by the mining geology department, the geological prospecting department, the mine design department and other departments to calculate mineral resource reserve.

The invention relates to a volume calculation method based on a 3D camera. The method comprises the following steps: obtaining a 2D image and a depth image of a measured object; selecting an ROI range, constructing a reference plane at the same time, delimiting a detection range, and extending the detection range outwards to obtain a judgment range; judging whether the measured object needs to be automatically calibrated or not; whether external interference exists in the detection range or not is judged, and height information of the detected object after interference elimination is calculated; calculating the most frequency value of height distribution according to the depth image information, obtaining the pixel number values of length and width according to the 2D information and the depth image information, calculating the pixel ratio by combining the pixel number values of length and width with the most frequency value, and finally obtaining the length and width information of the measured object. And calculating the volume of the measured object according to the height information and the length and width information of the measured object. The interference of a measurement environment, the external interference of a detection range and the interference of foreign matters on a measured object can be eliminated, the volume measurement efficiency and precision are improved, and the cost is saved.

The embodiment of the invention discloses an object volume calculation method and device, equipment and a storage medium, and the method comprises the steps: obtaining a plurality of frames of objectimages, and obtaining object key points and a connection relation in each frame of object image; calculating the scale ratio of the object according to the key points of the multiple frames of objectimages; acquiring three-dimensional point cloud information of the object according to the key points of the multiple frames of object images; and calculating the volume of the object according to thescale ratio, the connection relationship and the three-dimensional point cloud information. The accuracy of calculating the object volume is improved.

The invention discloses a three-dimensional object volume calculation method based on point cloud slicing. The method comprises the following steps: S1, carrying out point cloud slicing; S2, determining contour boundaries of the slice point cloud data; S3, calculating a slice area; S4, calculating point cloud volume. According to the method, the point cloud data has the characteristics of high precision, high density and high restoration, necessary conditions are provided for volume calculation of the space object due to the characteristics, and volume attributes can be effectively given to the three-dimensional GIS model; according to the method, the problem of volume calculation is indirectly converted into slice area calculation in a slice mode, so that the complexity of irregular volume calculation is greatly reduced, and the calculation efficiency is improved. According to the method, a bidirectional nearest point search method is adopted to sort the point cloud slices, and the problem that the concave polygon point cloud slices are difficult to sort correctly is solved. According to the method, the morphological reconstruction of the point cloud slice is realized, and on thebasis, the method can be applied to the volume calculation of the object and can also realize the efficient modeling reconstruction of the three-dimensional object.