METHOD AND DEVICE FOR DETERMINING AN ANGULAR ORIENTATION OF A LOG

    公开(公告)号:US20230040571A1

    公开(公告)日:2023-02-09

    申请号:US17877367

    申请日:2022-07-29

    Inventor: ENRICO URSELLA

    Abstract: Method for determining an angular orientation of a log (2) about one of its longitudinal development axes, comprising a first generation step, during which one or more first digital images are generated of the lateral surface of the log placed in a reference position, using one or more first digital photographs, a second generation step, during which one or more second digital images are generated of the lateral surface (1) of the log (2) placed in a second position using the one or more second digital photographs, a step of comparing the one or more second digital images with the one or more first digital images, and a step of determining the angular orientation of the log (2) in the second position with reference to a reference angular orientation of the log (2) in the reference position, based on information related to the first digital images and the second digital images for which a match was identified. Also claimed is a device which can implement is programmed to perform the following of the steps described above: the second generation step, the comparison step and the determination step.

    METHOD AND APPARATUS FOR PERFORMING A TOMOGRAPHIC EXAMINATION OF AN OBJECT

    公开(公告)号:US20210116395A1

    公开(公告)日:2021-04-22

    申请号:US17072982

    申请日:2020-10-16

    Abstract: A method and a related apparatus for performing a tomographic examination of an object (2) which advances through an examination area (6), wherein the examination area (6) is irradiated with x-rays transversally to a motion trajectory of the object (2) and the residual intensity of the x-rays which have crossed the object (2) is repeatedly detected to obtain, for each detection, an electronic two-dimensional pixel map, the two-dimensional maps thus obtained being processed by a computer to obtain a three-dimensional tomographic reconstruction of the object (2); wherein, during the advancement, the object (2) is made or let rotate, at least partly uncontrolled, in such a way that the object (2) rotates around one or more rotation axes which are transversal both to the motion trajectory and to the propagation directions of the x-rays crossing it; and wherein a computer also determines the spatial position in which the object (2) is located relative to the one or more emitters (4) and/or the one or more detectors (5) at the instant when each two-dimensional map is detected, and factors this in the tomographic reconstruction.

    APPARATUS AND METHOD FOR PERFORMING A COMPUTED TOMOGRAPHY SCAN OF AN OBJECT WHICH HAS AN ELONGATE SHAPE, IN PARTICULAR WOODEN BOARDS

    公开(公告)号:US20210270756A1

    公开(公告)日:2021-09-02

    申请号:US17176017

    申请日:2021-02-15

    Inventor: ENRICO URSELLA

    Abstract: Apparatus and method for performing computed tomography scans of elongate objects (1), wherein the object (1) is irradiated with X-rays emitted by a plurality of X-ray emitters (9) which are offset relative to a forward movement direction (2) transversal to the main axis of the object, wherein a rotation device (15) is configured for rotating each object (1) on itself about its own main axis of extension (3) while the object (1) is irradiated by one or more beams (11) of X-rays, wherein electronic identifying means estimate the instantaneous position and orientation of the axial portions (4) of the object (1) which are irradiated by the beams (11) of X-rays during the rotation, and wherein an electronic processing and control unit is programmed for combining sets of radiographic data acquired for each axial portion (4) of the object (1) at different detecting moments during the rotation, for processing a three-dimensional tomography reconstruction of the object (1) while taking into account corresponding information about the position and the orientation of each axial portion (4) at each moment.

    COMPUTER IMPLEMENTED METHODS FOR TRAINING OR USING A SOFTWARE INFRASTRUCTURE BASED ON MACHINE LEARNING TECHNIQUES

    公开(公告)号:US20210019873A1

    公开(公告)日:2021-01-21

    申请号:US16928385

    申请日:2020-07-14

    Abstract: Computer implemented method for training a software infrastructure based on machine learning techniques and intended for analysis of data obtained from a three-dimensional tomographic inspection of objects of a predetermined type, such as logs, with the aim of determining information about internal characteristics of interest of the self-same objects, wherein, once a training set comprising a plurality of objects of the same predetermined type has been selected, for each object the software infrastructure is supplied with training input data and corresponding training output data, which are processed by the software infrastructure for setting internal processing parameters of the software infrastructure which correlate the training input data with the training output data; where the training input data comprise data obtained from a three-dimensional tomographic inspection of the object, and the training output data comprise information about internal characteristics of interest assessed at internal points of the object, and where the information about the internal characteristics of interest is at least partly assessed at real internal points of the object, previously made accessible by cutting or breaking the object.

    METHOD AND APPARATUS FOR NON-DESTRUCTIVE INSPECTION OF A LOG TO IDENTIFY INNER ZONES THAT ARE FREE OF BLUESTAIN

    公开(公告)号:US20180313809A1

    公开(公告)日:2018-11-01

    申请号:US15953704

    申请日:2018-04-16

    Abstract: This invention relates to a method for non-destructive inspection of a log (1) to identify inner zones of sapwood (14) of the log (1) that have not been attacked by fungi that cause bluestain in the wood. The method comprises a first step of carrying out a tomographic scan of the log (1) to be inspected using X-ray beams that pass through the log (1) and a second step of obtaining a three-dimensional representation of the log (1) that is representative of the local moisture content of the log, the local moisture content being correlated with attenuation of the X-ray beams through the log. The method comprises the step of processing the three-dimensional representation of the log (1) to identify inner regions (145) of the log (1), in which the local moisture content is greater than or equal to a moisture threshold value for a spatial extent greater than an extent threshold. The moisture threshold value corresponds, for trees of the same species as the log (1), to a sapwood (14) with local moisture content such that it excludes the growth of fungi that cause bluestain in the wood. Each inner region (145) identified in this way is classed as a sapwood (14) zone free of bluestain. This invention also relates to a procedure for obtaining one or more wooden products from a log (1), as well as an apparatus for carrying out a non-destructive inspection of a log (1).

    METHOD FOR ESTABLISHING A POSTERIORI A MATCH BETWEEN A PIECE OF WOOD AND A LOG FROM WHICH THE PIECE OF WOOD HAS BEEN OBTAINED

    公开(公告)号:US20190283266A1

    公开(公告)日:2019-09-19

    申请号:US16297107

    申请日:2019-03-08

    Abstract: A method for establishing a posteriori a match between a piece of wood and a log from which the piece of wood has been obtained, comprising the following operating steps of performing a tomographic scan of the wooden log, of calculating or selecting a log cutting pattern, of defining, starting with the tomographic information available, one or more virtual individualising characteristics which are linked to the distribution and/or size of physical characteristics of the log inside and/or on the surface of the self-same virtual piece of wood, of saving them in a database, together with information about the identity of the log, of dividing the log into real pieces of wood according to the cutting pattern, of acquiring real information about the distribution and/or size of physical characteristics of the log inside and/or on the surface of a real piece of wood and of defining corresponding real individualising characteristics to be compared with virtual individualising characteristics saved and of identifying an origin of the real piece of wood based on the information about the identity of the log which is saved together with the virtual individualising characteristics which match the real individualising characteristics.

    METHOD FOR IDENTIFYING A LOG OF ORIGIN OF A FIRST BOARD

    公开(公告)号:US20230061650A1

    公开(公告)日:2023-03-02

    申请号:US17879007

    申请日:2022-08-02

    Abstract: A method for identifying a log of origin of a first board, comprising an identification step, during which a second board (12) is identified which was obtained from the same log (2) as the first board (11) was obtained from, a studying step, during which identifying features of the second board (12) are identified, and a recognition step during which the log (2) of origin of the first board (11) is recognised, among a plurality of known logs (2) about which saved information is available, and this is done by identifying the log of origin of the second board (12), using the identifying features of the second board (12) itself.

    PROCESSING HEAD FOR A FORESTRY MACHINE

    公开(公告)号:US20220124990A1

    公开(公告)日:2022-04-28

    申请号:US17502498

    申请日:2021-10-15

    Abstract: A processing head (10) for a forestry machine (1) is intended to process a tree (9) having a trunk (92) with a longitudinal direction (90), branches (94) extending from the trunk (92) transversely to the longitudinal direction (90) and knots (96) extending into the trunk (92). The processing head (10) comprises: a frame (2) having a seat (20) for receiving the trunk (92) of the tree (9) to be processed; a motorised device for moving the trunk (92) relative to the seat (20), by advancing the trunk (92) through the seat (20) along the longitudinal direction (90) of the trunk (92); one or more blades (26) for cutting the branches (94) from the trunk (92) as the trunk (92) advances; a detection system for detecting positions of the branches (94) and/or of the knots (96) on the trunk (92) as the trunk (92) advances. Information on the positions of the branches (94) and/or of the knots (96) is processed to determine an identification code that is based on said positions and that refers to said trunk (92) or to a segment obtained from said trunk (92). The identification code is comparable against a code determined a posteriori for a specific trunk or for a specific segment of trunk, in order to establish whether the specific trunk or the specific segment of trunk corresponds to said trunk (92) or to said segment of trunk (92). The information on the positions of branches (94) and/or of knots (96) can also be used to determine, during a processing of the tree (9), one or more positions on the trunk (92) in which to cut the trunk (92) perpendicularly or transversely to the longitudinal direction (90), which is to say to optimise the truncation of the trunk (92).

    COMPUTER-IMPLEMENTED METHOD FOR TRAINING OR USING A SOFTWARE INFRASTRUCTURE BASED ON MACHINE-LEARNING TECHNIQUES

    公开(公告)号:US20210089902A1

    公开(公告)日:2021-03-25

    申请号:US17023579

    申请日:2020-09-17

    Abstract: A computer-implemented method for training a software infrastructure based on machine-learning techniques to analyse data obtained from a instrumental examination of objects of a predetermined type, where each of the objects has been obtained by splitting a product into smaller pieces, wherein the software infrastructure receives, for each object in a training set, training input data comprising the data obtained from the instrumental examination and training output data comprising information on the characteristics of interest of the training object, wherein the information on the characteristics of interest is, at least in part, information that has been obtained from the results of a tomographic examination of the product from which the training object was obtained, and wherein the software infrastructure processes, through its own training unit, the training input data and the training output data for each training object in order to set internal processing parameters for the software infrastructure which correlate the training input data to the training output data.

    METHOD AND APPARATUS FOR NON-DESTRUCTIVE INSPECTION OF FRUITS HAVING AN AXIS OF ROTATIONAL SYMMETRY

    公开(公告)号:US20190242833A1

    公开(公告)日:2019-08-08

    申请号:US16264162

    申请日:2019-01-31

    Abstract: This disclosure relates to a method for non-destructive inspection of a fruit (1) having an axis of rotational symmetry (10). The method comprises the step of positioning the fruit (1) in such a way that its axis of rotational symmetry (10) has an orientation that is substantially parallel to a predetermined plane (20) and the step of radiographing the fruit (1), where the direction of emission of X-rays is substantially perpendicular to said predetermined plane (20) and an X-ray image obtained (41) lies on said predetermined plane (20). The X-ray image obtained (41) is processed to calculate, at corresponding points of the X-ray image (41), respective values of attenuation of the X-ray signal through the fruit (1). The X-ray image (41) is divided into a plurality of sections (415) which are perpendicular to the projection (410) of the axis of rotational symmetry (10) on the predetermined plane (20). Each section (415) is the projection of a corresponding slice of the fruit (1) that is substantially perpendicular to the axis of rotational symmetry (10). For each section (415), the deviation between a signal attenuation trend obtained from processing the X-ray image and a reference trend, or the deviation between a trend of a local coefficient of average attenuation obtained from processing the X-ray image and a trend with constant value, is examined in order to identify any anomalies, discontinuities or variations which are indicative of respective non-uniformities in the corresponding slice of fruit. This disclosure also relates to an apparatus (9) for carrying out a non-destructive inspection of a fruit (1) having an axis of rotational symmetry (10), said apparatus being configured for implementing the method according to the disclosure.

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