37 results about "Tree measurement" patented technology

The invention provides a method for measuring and reconstructing a tree based on single three-dimensional laser scanning, and relates to the technologies of computer graphs and computer vision. The method comprises steps of data preprocessing, axial estimation, three-dimensional framework computation and three-dimensional model generation. The method only utilizes single scanning data of a laser scanner to obtain branch shape and radius information faithful to the primary tree, carries out main operations in a two-dimensional image space, has simple and effective algorithm and accurate reconstruction result, and has important application values in the computer graphics application fields such as virtual reality, computer game, natural scene simulation, urban landscape design and the like and in the fields such as agriculture and forestry investigation, tree measurement, etc.

The invention discloses a tree diameter at breast height automatic measurer, which relates to a measurement device, particularly relates to a wireless sensor network-based tree diameter at breast height automatic measurer and belongs to the technical field of tree measurement tools. The tree diameter at breast height automatic measurer comprises a binding band; the binding band is a resistance band; one end of the resistance band is provided with a fixed knot and the other end of the resistance band is provided with a mobile knot; the fixed knot is arranged in a fixed knot box, and a first buckle is arranged on the side surface of the fixed knot box; the mobile knot is arranged in a spring pressure box, a second buckle is arranged on the side surface of the spring pressure box, the first buckle and the second buckle are located in the same horizontal plane, and the first buckle and the second buckle are connected via a clamping band; a fixed knot wire and a mobile knot wire are respectively connected onto the fixed knot and the mobile knot, and tail ends of the fixed knot and the mobile knot are sealed in the spring pressure box; tail ends of the fixed knot wire and the mobile knot wire are bent; and the spring pressure box is internally provided with a measurement control unit. The measurement reading is accurate, the efficiency is high, and the safety is good.

The invention discloses a method that under the condition that a standing tree is not hewed down, the height of the standing tree, the diameter and the growing stock of any place of the standing tree are measured, and particularly, through the method of edge extraction of a forest in a digital photo, relevant data are measured. The stereoscopic photograph is applied to the forestry, the standing tree does not need to be hewed down, and the height of the standing tree, the diameter and the growing stock of any place of the standing tree can be measured, the new method is brought to the comprehensive analysis of growth conditions of trees, and the method enables forestry investigation to be more convenient and accurate. The method that the common camera is used for carrying out stereoscopic photograph tree measurement is simple and easy to operate, as long as people strictly operate according to technical requirements, the satisfactory investigation result can be obtained.

The invention discloses a method for directly determining the stand volume with a mobile phone, wherein the method comprises the following steps: determining the number and volume of trees in a forest stand per unit area by an angle gauge method; taking an ordinary mobile phone as a tool, setting angle gauge factors in mobile phone tree-measurement software; when certain angle gauge factor Fg is used, measuring around 360 degrees from sampling points, and observing heights of trunks above the ground, wherein the trunks are at places where the angle gauge notch is just tangent to the trunks above the breast height; the method for calculating the stand volume is as follows: the volume per hectare (M) is equal to the sum (in m) of heights of the trunks at all tangent places of each observed tree on the forest land above the ground multiplied by the angle gauge factor (referring to the Specification for the formula).

This invention discloses an electrical altometer measurement system and its automatic tree measurement method, which is integrated by electrical altometer, PDA and database. The tree measurement method is the following: the electrical altometer measurement process is combined with computer technique; under the aid of electrical altometer and angle gage tree measurement software, it realizes the measurement, judgment, computer automation of the tree measurement process to simultaneously accomplish the indoor and outdoor process. It specially adopts potential computing method combined with current method to measure the tree growth storage more reasonable.

The invention discloses an optimized calculation method for forest stand selective cutting amount based on an electronic tree measurement gun. The method is characterized in that trees are observed via the electronic tree measurement gun so that data of diameter at breast height of the trees, height of the trees and volume of the trees are acquired. Current stand volume and stand volume after a period of time in the future are acquired via a specific algorithm, and selective cutting is performed on increment of latter stand volume according to a certain mode.

The invention relates to a forest measurement method and particularly relates to a forest measurement method based on an electronic tree measurement gun. An inclination sensor angle measurement, a laser distance measurement, an electronic compass, a central control unit, a flash memory, a liquid crystal display, a micro-button, a universal serial bus (USB) data communication interface and the like are performed high-density high-reliability integration, and a physical casing is designed in accordance with ergonomics. Functions such as measurement of coordinates, measurement of tree heights, measurement of angle gauges and measurement of forest mean height are achieved. In the measurement process, measurement data are digitally displayed and stored automatically. Problems that the period of data acquirement is long, the efficiency is low and the precision is poor in traditional forest measurement methods are solved. The efficiency and the precision are improved, the period is shortened, and the accurate measurement of forest stand is achieved.

The invention discloses a store transaction record-based foot measurement customization method and system. The method comprises the steps of establishing user tags according to personal data; according to three-dimensional foot type data obtained by registered users, obtaining foot type tags; preprocessing and storing shoe type attribute data, corresponding shoe tree attribute data and shoe tree measurement data; according to purchase behaviors of the users, obtaining transaction records; and extracting effective transaction records from the transaction records. A certain quantity of effectivetransaction record sets corresponding to one type or style of shoes can serve as training samples of a foot measurement customization model; and parameters obtained after training can be used for predicting a modification scheme that different foot types are suitable to wear shoe trees of the type or style of the shoes, so that the appropriateness and accuracy of foot measurement customization are ensured. By utilizing the transaction records of conventional sizes of the users in a store scene, the effective transaction records are judged and extracted to serve as the training samples required by the matching model after cleaning and screening are performed to a certain extent, so that an actual shoe try-on process can be omitted, and the manpower and time costs are greatly reduced.

The invention discloses a tree measuring method including that sampling point information collected by a non-prism total station in real time is acquired by a processor, the sampling point information includes a highest altitude Ht, a lowest altitude Hb and sampling point coordinates; a tree height H is calculated by the processor according to the highest altitude Ht and the lowest altitude Hb, the tree height H=Ht-Hb; tree crown projected area is calculated by the processor according to the sampling point coordinates. The invention further discloses a tree measuring system. By the aid of the tree measuring system and method, the sampling point information of object trees is accurately and efficiently collected by the non-prism total station in complex terrain situation; and the tree height and the tree crown projected area are calculated by the processor. And meanwhile, when the tree crown projected area is calculated, non-linear tree crown projection is linearized by combining a concave-convex polygon according to tree crown total grow state; the tree crown projection is transformed into an arc polygon with concave arcs and convex arcs to be calculated; and the accuracy is high.

The invention relates to a method for measuring the mean height of vegetation. According to the method for measuring the mean height of the vegetation, a tree measurement gun (a handheld total station instrument) is used as a tool, a new critical value is designed, the included angle between a treetop of a target tree and one fixed high position is measured and compared with the critical value, counting is conducted according to a rule, and the forest stand mean height is calculated according to a total number obtained through accumulation of results of the measurement conducted for a circle around the tree. The calculation accuracy of the mean height of the vegetation is greatly improved and the defects that an existing forest stand mean height measurement method is simple, low in accuracy and long in measurement period are overcome.

The invention discloses an instrument which can measure the chest diameter of a tree, the height of the tree and the area of a standard forest land and organically combines the technology of multifunctional measurement of the standard forest land and the technology of data intelligent management. A tree measurement instrument designed in the invention achieves the measurement of the diameter of the tree through employing the technology of ultrasonic ranging, achieves the measurement of the height of the tree through employing an MEMS triaxial accelerometer sensor, achieves the statistics and management of measurement data through employing a Windows Embedded CE6.0 management system, and is an instrument which is formed by the combination of hardware and software based on the ultrasonic sensor and the MEMS triaxial accelerometer. The working principle of the measurement instrument mainly comprises two parts: employing the image and distance information collected through the MEMS triaxial accelerometer sensor and a digital camera, and measuring the height of the tree through employing a triangular measurement method; employing the ultrasonic sensor to transmit and receive ultrasonic waves, and measuring the diameter of the tree through employing the ultrasonic distance measuring principle.

The invention discloses a tree diameter at breast height automatic measurer, which relates to a measurement device, particularly relates to a wireless sensor network-based tree diameter at breast height automatic measurer and belongs to the technical field of tree measurement tools. The tree diameter at breast height automatic measurer comprises a binding band; the binding band is a resistance band; one end of the resistance band is provided with a fixed knot and the other end of the resistance band is provided with a mobile knot; the fixed knot is arranged in a fixed knot box, and a first buckle is arranged on the side surface of the fixed knot box; the mobile knot is arranged in a spring pressure box, a second buckle is arranged on the side surface of the spring pressure box, the first buckle and the second buckle are located in the same horizontal plane, and the first buckle and the second buckle are connected via a clamping band; a fixed knot wire and a mobile knot wire are respectively connected onto the fixed knot and the mobile knot, and tail ends of the fixed knot and the mobile knot are sealed in the spring pressure box; tail ends of the fixed knot wire and the mobile knot wire are bent; and the spring pressure box is internally provided with a measurement control unit. The measurement reading is accurate, the efficiency is high, and the safety is good.

The invention discloses a forest tree measurement method based on centrifugal observation and eccentricity correction under the shielding condition, comprising the following steps of: when goal trees are shielded, using the centrifugal observation and eccentricity correction method to deflectedly measure visual observed goal trees and calculate the mean height and basal area of the forest stand; during the measurement of the forest stand mean height, reinstalling a device at the random distance L from any angle to the deflectedly measure vision by using an electronic angle gauge to measure level angle alpha, vertical angle beta1 and beta2, comparing the value of tanbeta with 1.772 to determine the number of the trees, and further calculating the mean height of the forest stand; during the measurement of the basal area, calculating the actual horizontal distance S from the trees to the angle gauge point, comparing the value of S with the fillet radius R of the trees to determine the number of the trees, and further calculating the basal area growth increment of the forest stand. The method provided by the invention is used to measure the tree height and the basal area growth increment by the centrifugal observation and eccentricity correction method under the shielding condition.

The invention relates to a forest resource monitoring method and device based on a laser radar and a storage medium. The method comprises the steps: carrying out feature variable extraction according to laser point cloud data, and obtaining sample plot feature variable data and global feature variable data; according to the sample plot feature variable data and the ground survey sample plot, establishing a laser radar accumulation estimation model; analyzing the global feature variable data through forest resource management data to obtain a tree species (group) set; inputting the tree species (group) set into the laser radar forest stand volume estimation model for calculation to obtain global forest stand volume estimation information, and deducing the global forest stand volume estimation information to obtain a tree measurement factor set; and updating the forest stock and tree measurement factor information to forest resource management vector data, and managing forest resources by a development information management system based on the Internet+ technology. According to the invention, the precision and timeliness of forest stock monitoring can be improved, and annual output of forest resources is realized.

The invention provides a standing tree chest diameter measurement method and device, relating to the technical field of tree measurement equipment. The standing tree chest diameter measurement devicecomprises a left cutting arm, a right cutting arm, a middle ruler arm, a controller, a first angle sensor, and a second angle sensor, wherein the left cutting arm and the middle ruler arm are connected in a rotating manner, a first rotary joint is formed at a joint, the right cutting arm and the middle ruler arm are connected in a rotating manner, a second rotary joint is formed at a joint, the middle ruler arm is provided with a middle tip, and distance between the middle tip and the first rotary joint and distance between the middle tip and the second rotary joint are equal. The standing tree chest diameter measurement method has high measurement efficiency, high accuracy and high portability, and can be used for measuring a chest diameter of a large tree.

The invention discloses a forest stand survey sample wood accurate code generation method based on foundation three-dimensional laser scanning, and belongs to the field of forest stand survey. The method aims at solving the problem that the sample wood number of laser point cloud data obtained through scanning is difficult to determine when forest stand standard land investigation is carried out through foundation three-dimensional laser scanning at present. The invention provides the forest stand survey sample wood accurate code generation method based on foundation three-dimensional laser scanning, and aims to solve the problem that a traditional digital labeling method cannot adapt to sample wood labeling requirements of forest stand standard plot survey through foundation three-dimensional laser scanning when actual measurement sample wood tree measurement factors are compared. According to the method, m x n grids with light reflecting sheets are regarded as dyed m x n grids; the number of dyed grids is set to be k; a solution set S of grid dyeing, and the number |S| of elements and the number N of consumables in the solution set S under the condition that the elements can be correctly identified are solved; the method can quickly determine the position of each sample tree in a single-stage or multi-stage forest stand standard land so as to meet the requirements of forest tree measurement factor contrastive analysis of forest stand survey by foundation laser.

The invention discloses a method for drawing a 3D tree measurement angle gauge through a smart phone. The method is characterized by comprising the steps that the smart phone serves as a tool, and comparison is conducted between scales in matched mobile phone software and the included angle formed between counting trees in a forest sample plot; the counting trees in the forest sample plot are selected, and counting is conducted in sequence in the mode that in the clockwise direction, 0.5 is recorded when the scales and the trees are in tangency, zero is recorded when the scales and the trees are separated, and one is recorded when the scales and the trees are in intercrossing; finally, the product of the cross sections of tree species per hectare in the forest resource investigation process is measured according to the counting trees. The photographing function of the smart phone is utilized, two corresponding reticules are calculated through the matched software according to the angle between the counting trees, and are compared with the cross section areas of trunks of the counting trees, and therefore a conventional angle gauge is replaced, and the method is easy and more accurate and convenient to use.

The invention provides a device for measuring the asymmetric diameter at breast height of a tree, and belongs to the technical field of tree measuring equipment. The problem of how to improve the measurement precision of the asymmetric tree breast height diameter is solved. The device comprises: a first ruler strip and a second ruler strip moveably connected with a tail end, and an operation box.A first angle measuring mechanism and a second angle measuring mechanism are arranged in the operation box, the head end of the first ruler strip is bent to form a first protrusion, the head end of the second ruler strip is bent to form a second protrusion, the first protrusion comprises a first working end face, and the second protrusion comprises a second working end face. By adopting the device, the asymmetric diameter at breast height of the tree can be measured more accurately.

The invention discloses a non-contact tree diameter at breast height measuring method and system based on computer vision. Hardware equipment comprises an RFID tag, a smart phone, RFID read-write equipment and handheld equipment. A tree trunk photo with a color label is shot through the smart phone, and the photo is transmitted to a server to be subjected to image processing, and the diameter at breast height of the tree to be measured is obtained after processing; the color label is attached with an RFID label, an RFID read-write device identifies the RFID label of the tree, and the measureddiameter at breast height of the tree and the RFID label of the tree are correspondingly stored in the server. The device in the embodiment of the invention is simple and convenient to carry, and thewhole system can improve the efficiency of tree measurement and management.

The invention provides a method and device for measuring the diameter of a standing tree, which relate to the technical field of tree measuring equipment. Sensor; wherein, the left cutting arm is rotationally connected with the middle ruler arm, and a first rotary joint is formed at the connection; the right cutting arm is rotationally connected with the middle ruler arm, and a second rotary joint is formed at the connection; A middle apex is arranged on the middle ruler arm; the distance between the middle apex and the first revolving joint is equal to the distance between the middle apex and the second revolving joint; the standing tree diameter measuring device has high measurement efficiency, high accuracy, and good portability. It is suitable for the measurement of diameter at breast height of large trees.

The tree measurement method based on the intelligent terminal lens, the main purpose of the present invention is to overcome the disadvantages of uneasy operation, low efficiency and complicated troubles of using tape measures or large measuring instruments in the past to obtain the best shooting environment, and provide a basis for improving the accuracy of data Valuable guidance. The present invention proposes to develop tree height, diameter at breast height and crown width measurement models by combining technologies such as computer vision, mathematical geometry model, camera calibration and orthogonal test analysis, which are used for the measurement of tree information in garden management, and provide information collection and Management provides an advanced means and tools.

The invention discloses a panoramic normal-case forest sample plot photographing mobile phone device and a tree measuring method thereof. The panoramic normal-case forest sample plot photographing mobile phone device consists of a vertical rod with two supporting sheets, an automatic rotating chassis, and two calibrated mobile phones. The tree measuring method comprises the following steps: firstly, fixing the two calibrated mobile phones on the two supporting sheets of the vertical rod respectively; secondly, under the assistance of a leveling bubble, regulating foot screws of the chassis to enable the panoramic normal-case forest sample plot photographing mobile phone device to keep level; thirdly, opening panoramic photographing modes of the mobile phones, and automatically rotating for one circle to obtain panoramic stereopair of a forest sample plot; finally, by virtue of a transformation relationship between a photogrammetric image space and a photogrammetric object space, acquiring coordinates of standing trees in the sample plot, and determining relative position relationship between the standing trees, wherein according to the transformation relationship between the image space and the object space, breast diameters and tree heights of the standing trees in the sample plot can be acquired. By the tree measuring method, panoramic mobile phone photography is applied to tree measurement in the sample plot, so that the field observation time is greatly saved, the working efficiency is improved, the labor intensity is reduced, and the permanent storage of a field investigation condition is facilitated.

The invention discloses an electronic angle gauge tree measuring instrument and an automatic tree measuring method. The instrument is a combination of an optical angle gauge and a digital camera. It places the CCD area array (photoelectric converter) ② of the digital camera on the focal plane of the optical square gauge. Therefore, the image light signals collected by the telescopic system ① and the microscopic system ③ are digitized after being converted into electronic signals by the CCD. Then it is transmitted to the database through the data communication cable to realize the automation of information collection and recording. The tree measuring method is a combination of the electronic angle gauge tree measuring process and computer technology. With the cooperation of the electronic angle gauge dendrometer, the measurement, judgment and calculation of the tree measurement process are fully automated through the angle gauge tree measurement software, which enables the synchronization of the outside and the industry, which can greatly improve work efficiency and reduce labor intensity. In particular, the stand volume can be obtained without measuring the average height of the stand, which overcomes the difficulties of overlapping tree crowns and poor visibility in the forest, and can further improve the practicability of measuring trees with angle gauges, and has broad market prospects.

The invention discloses a tree growth telemetering method and system based on a directional diffusion protocol, and particularly relates to the field of tree measurement of a man-made forest, and the method comprises the steps: carrying out the flooding propagation of interest information to a data node through a base station node, obtaining the distance between each node and the base station node in the flooding propagation process, storing the interest information and the forwarding times when the interest information in each propagation path is forwarded to each node to a node list of the corresponding node; acquiring the propagation path with the least forwarding times in the propagation paths, taking the propagation path as a data transmission path, and taking the rest propagation paths as alternative paths; and screening low-energy nodes and carrying out path replacement. Compared with a traditional DD protocol, the method has the advantages that the gradient establishment process is reduced, the network establishment time is greatly shortened, the network survival time is prolonged, and meanwhile the utilization rate of network energy is increased.

The invention discloses a tree measuring method including that sampling point information collected by a non-prism total station in real time is acquired by a processor, the sampling point information includes a highest altitude Ht, a lowest altitude Hb and sampling point coordinates; a tree height H is calculated by the processor according to the highest altitude Ht and the lowest altitude Hb, the tree height H=Ht-Hb; tree crown projected area is calculated by the processor according to the sampling point coordinates. The invention further discloses a tree measuring system. By the aid of the tree measuring system and method, the sampling point information of object trees is accurately and efficiently collected by the non-prism total station in complex terrain situation; and the tree height and the tree crown projected area are calculated by the processor. And meanwhile, when the tree crown projected area is calculated, non-linear tree crown projection is linearized by combining a concave-convex polygon according to tree crown total grow state; the tree crown projection is transformed into an arc polygon with concave arcs and convex arcs to be calculated; and the accuracy is high.

The invention provides intelligent mobile phone forest integrated observation equipment and method, wherein the equipment is composed of an intelligent mobile phone, a monocular, a handheld environment monitor, a mobile phone support and matched software; forest event recording, environment information monitoring and forest tree measurement schemes are realized. The method comprises the following steps: (1) forest event recording: shooting some forest events by using a monocular, a mobile phone positioning system and a direction sensor, recording images, positions and shooting angles, and uploading the images, the positions and the shooting angles to a background; (2) forest tree measurement: measuring the tree height and a micro sample plot by software, performing micro sample plot (a five-tree method) planning by selecting a representative area in the forest, and recording the tree species, diameter at breast height and tree height of each tree in the sample plot, and automatically estimating, by the software, the forest stand density, the forest stand volume, the biomass and the carbon reserve of the whole forest stand; and (3) environment information monitoring: connecting the mobile phone with the handheld environment monitor, so that weather information and soil information of the current position can be obtained in real time.

The invention discloses a method for monitoring the growth of a trunk based on the 3D laser scanning technology. In the field of single tree measurement in forest measurement, a departure from conventional instruments and methods which are designed to be 1D measurement of the diameter at breast height of trees, the method herein is 2D measurement which extracts the sectional area and shape changesof the diameter at breast height of trees by establishing a 3D tree model with the 3D laser scanning technology. The method herein greatly increases the precision in monitoring the growth of trees.

The invention discloses an annual ring width measurement method and an annual ring width measurement system, and relates to the technical field of tree measurement. The method comprises the following steps: taking a tree disk as a base disk; obtaining an annual ring width of each annual ring on the reference disk except for the annual ring closest to the heart center; obtaining the total width of all the annual rings on the tree disk to be measured except for the annual ring closest to the heart center; calculating the annual ring width of each annual ring on the tree disk to be measured except for the annual ring closest to the heart center. Due to the steps, the conventional method for measuring the annual ring width is not applied, so that a lot of actual measurement work is reduced, and the measurement efficiency and the measurement accuracy are improved; furthermore, the annual ring widths of other disks are only needed to be measured once except that the annual ring width of each year on the reference disk is needed to be measured, so that the operation is simple; meanwhile, the annual ring closest to the heart center is measured independently, and is not regarded as a proportionality coefficient, so that the error of other annual ring widths is eliminated.

The invention discloses an automatic leveling optical tree-measuring angle gauge, which is applied in forest survey. The automatic leveling optical tree-measuring angle gauge is provided with a cylindrical shell, two cylindrical ports are parallel planes forming a front observation window and a back observation window; the lower part of the inner side of the shell is fixedly provided with a wedge-shaped mirror, the cylindrical port on one side of the shell is provided with two cusp-shaped gaps, a connecting line of the two gaps is parallel to the upper plane of the wedge-shaped mirror; the top part of the shell is provided with a through hole, a button is arranged in the through hole, a vertical rod is hanged below the button, a vertical rod positioning plate which is parallel to the upper plane of the wedge-shaped mirror is arranged on the vertical rod, and a spring is arranged on the vertical rod positioning plate. The invention has the advantages of compact structure, small and flexible size, convenient carrying, simple operation, accurate measurement and easy implementation, and well solves the problem of automatic slope correction of the wedge-shaped mirror. When the invention is used for measuring a tree, the distance of distinct vision needs no adjustment, the location relationship of real images and virtual images can be easily interpreted, and the invention solves the problem of increased interpretation errors caused by eye fatigue as a result of frequent adjustment of the distance of distinct vision during the tree measurement of all angle gauges of the prior art.