JP3241535U - Imaging and measuring device for wood cutting edge diameter - Google Patents

Abstract

An object of the present invention is to provide an imaging and measuring device for measuring the diameter of a cut end face of a lumber that images and measures the diameter of a lumber cut at a logging site, converts the diameter class display, and saves and uses it as measurement data. A device for imaging and measuring the diameter of a cut end surface of wood is a camera for photographing circular cut end surfaces of felled lumber one by one at a logging site, and is provided with a data processing device and a data transmission device, and the data processing is performed. The device includes an image processing device for determining a contour circular shape from an image captured by a camera, a calculation device for obtaining the center of gravity of the contour circular shape from the captured image and obtaining the minimum value of the circular shape centered on the center of gravity, and the imaging device. It comprises an arithmetic device for calculating a diameter class value from the minimum value of an image, a storage device for recording the count and calculated values for each diameter class, and a display device for displaying the calculation result of the diameter class. [Selection drawing] Fig. 1

Description

TECHNICAL FIELD The present invention relates to an imaging and measuring device for measuring the diameter of a cut end face of wood, which can image and measure the diameter of a lumber cut at a logging site, convert the diameter class display, and store and use it as measurement data.

At the forestry logging site, the cut wood is cut one by one and the point where the minimum value is seen from the circular end face is measured with a tape measure, etc., 14 cm or less is incremented by 1 cm, for example, 9 cm to 9.9 cm is "9 cm" diameter , Also, those exceeding 14 cm are in increments of 2 cm, for example, 14 cm to 15.9 cm are "14 cm" diameter classes, and the measurement data are recorded on the recording paper and directly on the cut circular end face of the measured wood.
As for the measurement data, the number and volume of wood aggregated for each diameter class are recorded on the delivery slip designated by each company, and the lumber and the delivery slip are delivered as a set to the customer.
The customer compares the actual lumber with the measurement data on the delivery note, sorts and stores the actual lumber by diameter class, and issues work instructions for each diameter class.

Conventionally, there have been known a processor device used to mechanize tree felling and tree building work for harvesting timber resources in forests and producing wood products, and a tree felling and tree building method using such a processor device. (See Patent Document 1).
This well-known technology is a processor device installed in a work vehicle having a movable arm, which holds felled lumber and cuts it into predetermined lengths. a gripping portion disposed in the body portion for gripping a piece of wood; a feeding portion for longitudinally feeding the piece of wood gripped by the gripping portion; a cutting portion for cutting the piece of wood at an adjacent end of the feeding portion; an imaging device that captures an image of a portion of the wood gripped by the gripping portion that extends from the gripping portion along the center line of the gripping portion along the axial direction of the wood in a direction away from a portion adjacent to the gripping portion; A display device arranged on the work vehicle for receiving and displaying image information of wood sent from the image pickup device, and information transmission means for transmitting the image information from the image pickup device to the display device.

In this way, the above-described processor device for felled wood can inspect defective portions of wood based on information captured by an imaging device from another direction in addition to visual observation by the operator. Moreover, it is possible to reliably cut only good parts of wood without defects to obtain wood products with high commercial value.
On the other hand, the present invention captures and measures the diameter of the lumber felled at the logging site, obtains measurement data that records the number of lumber aggregated for each diameter class and the calculated value on the delivery slip specified by each company, and sends the lumber and the delivery slip to the customer. It is an image measuring device for the diameter of the cut edge of wood that can be passed as a set.

JP-A-2005-27509 Japan System Design Co., Ltd. Log diameter class measurement system Ver1.0 Pamphlet Japan IPROS Manufacturing October 7, 2019 Page 1 Kyoichiro Seto Development of raw wood volume measurement method by image analysis and research on computerization of tree ring patterns Doctoral thesis Japan University of Tokyo March 25, 2013 Cover Contents pp.28-34

In this invention, the diameter of the lumber felled at the felling site is accurately imaged and measured except for the part not used for diameter measurement (hereinafter referred to as "defective part"), and the diameter class display is converted and used as measurement data. It is an object of the present invention to provide an apparatus for measuring the diameter of a cut end surface of wood that can be stored and used.

A device for imaging and measuring the diameter of a cut end face of wood according to the present invention is a camera equipped with a data processing device and a data transmission device for photographing circular cut end faces of cut wood one by one at a logging site, wherein the data processing device comprises an image processing device for determining a contour circular shape from a captured image, a calculation device for obtaining the center of gravity of the contour circular shape from the captured image, and obtaining the minimum value of the circular shape centered on the center of gravity, and It comprises an arithmetic device for calculating a diameter class value from a minimum value, a storage device for recording the total number and calculated value for each diameter class, and a display device for displaying the calculation result of the diameter class.

The apparatus for measuring the diameter of a cut end face of wood according to the present invention can automate the diameter-grading work at a logging site, and the customer can easily use the aggregated data in an electronic file.
The imaging and measuring device for the diameter of the cut end surface of wood according to the present invention can accurately measure the diameter of the cut end surface of wood with little difference from the actual measurement value just by photographing the diameter, and can sort the diameter class. can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of an imaging measuring device for measuring the diameter of a cut end surface of wood according to the present invention; FIG. 2 is a work flow diagram of the apparatus for imaging and measuring the diameter of a cut end surface of wood according to the present invention;

An embodiment of the apparatus for measuring the diameter of a cut end surface of wood according to the present invention will be described below.
As shown in the overall configuration diagram of FIG. The data processing device includes an image processing device for determining a contour circular shape from an image captured by a camera, and an image processing device for obtaining the center of gravity of the contour circular shape from the captured image, and obtaining a circular shape centered on the center of gravity. A calculation device for obtaining the minimum value, an arithmetic device for calculating a diameter class value from the minimum value of the captured image, a storage device for recording the count and calculated values for each diameter class, and displaying the calculation result of the diameter class. and a display device for displaying.

The camera is a handy type portable CCD camera, which can be substituted with the camera function of a mobile phone, and has a data processing function and a data transmission function inside.
Take a picture of the cut circular end of the wood from a certain distance away, convert the image into an actual measurement value inside the CCD camera, upload the data to the cloud server as appropriate, and calculate the diameter class conversion of a personal computer at a distant point. Download data to the device.

The image processing device performs image processing for judging the circular shape from the contour of the captured image captured by the CCD camera.
The calculation device obtains the center of gravity from the contour circular shape image-processed by the image processing device, and obtains the minimum value of the circular shape centered on the center of gravity.

The computing device computes a diameter class value from the minimum value of the captured image. 14 cm or less is automatically converted in increments of 1 cm.
The storage device aggregates the calculation results sent from the calculation device for each diameter class, and records the number and calculated value.
The display device is a monitor screen or a CRT, and displays the calculation result of the diameter class.

Next, the operating operation of the apparatus for measuring the diameter of a cut end surface of wood according to the present invention will be described with reference to (1) to (6) in the work flow diagram of FIG.
(1) Timbers cut down in a forest are arranged in piles at a logging site in a flat, vacant lot, and a CCD camera photographs a cross-section of each of the cut down timbers.
(2) Perform image processing for judging the circular shape from the contour of the captured image captured by the CCD camera.
(3) Find the center of gravity from the image-processed contour circle, and find the minimum value of the circle around the center of gravity.
(4) Calculate the diameter class value from the minimum value of the captured image. 14 cm or less is automatically converted in increments of 1 cm.
(5) Display the total number and calculated value (converted value) for each diameter class.
(6) Register the calculated value (converted value), and write the calculated value (converted value) directly on the photographed tree.

Next, the use of the measurement data will be explained in the following (7) to (12) without a flowchart.
(7) Transport the timber for which measurement has been completed to a truck loading location.
(8) Transfer the data registered in the CCD camera to a smartphone (dedicated application) or a laptop computer installed in the truck.
(9) The smartphone (dedicated application) that received the data or the laptop computer installed on the truck automatically performs predetermined aggregation and calculation for each customer file and registers the data.
(10) While the lumber is loaded onto the truck and delivered to the customer, the aggregated data is transmitted to the customer or delivered in a USB memory at the time of delivery.
(11) Deliver the invoice and lumber to the customer.
(12) The customer compares the actual lumber with the measurement data on the delivery note, sorts and stores the actual lumber by diameter class, and issues work instructions for each class.
In this way, the present invention can automate the diameter classification work at the logging site, and the customer can easily use the aggregated data in the form of an electronic file.

Claims (2)

A camera equipped with a data processing device and a data transmission device for photographing the circular end faces of cut timbers one by one at a logging site, wherein the data processing device judges the contour circular shape from the photographed image. an image processing device, a calculation device that obtains the center of gravity of the contour circular shape from the captured image and obtains the minimum value of the circular shape centered on the center of gravity, and an arithmetic device that calculates the diameter class value from the minimum value of the captured image; An apparatus for imaging and measuring the diameter of a wood cut end surface, comprising: a storage device for recording the number and calculated values for each diameter class; and a display device for displaying the calculation result of the diameter class. 2. The apparatus for measuring the diameter of a cut edge of wood according to claim 1, wherein said camera is a handheld CCD camera.

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