WO2022226601A1 - Handheld fibre test device - Google Patents
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- WO2022226601A1 WO2022226601A1 PCT/AU2022/050400 AU2022050400W WO2022226601A1 WO 2022226601 A1 WO2022226601 A1 WO 2022226601A1 AU 2022050400 W AU2022050400 W AU 2022050400W WO 2022226601 A1 WO2022226601 A1 WO 2022226601A1
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Definitions
- the present invention relates to apparatus, device and methods for automated testing of fibres and in particular to apparatus, device and methods for automated testing of the characteristics and qualities of animal fibres.
- the invention has been developed primarily for use in handheld apparatus, devices, and methods of usage and operation thereof for real-time automated testing of the characteristics and qualities of animal fibres including, for example, sheep wool, alpaca hair, angora (rabbit) hair, mohair (goat), or cashmere (goat) wool, either in the field or shearing shed for rapid fibre classification and will be described hereinafter with reference to this application.
- sheep wool, alpaca hair, angora (rabbit) hair, mohair (goat), or cashmere (goat) wool either in the field or shearing shed for rapid fibre classification and will be described hereinafter with reference to this application.
- sheep wool alpaca hair
- angora (rabbit) hair mohair (goat)
- mohair goat
- cashmere (goat) wool either in the field or shearing shed for rapid fibre classification and will be described hereinafter with reference to this application.
- the invention is not limited to this particular field of use.
- the Australian wool market exports approximately $3.5 billion dollars per annum, and approximately 70-80% of the value of that wool is determined by the diameter of its fibre. The finer the fleece, the higher the price.
- Current industry practices include visual inspection of the fleece at shearing time (manual wool classing), which is subjective and inaccurate, or sending away samples for testing using either image based (OFDA2000) portable systems or laser-based systems (CSIRO Sirolan Laserscan). These external services are costly, time consuming and make the farmer wholly dependent on a third-party for their testing results.
- Portable fibre testing devices are known, for example, the OFDA2000 available from BSC Electronics of Ardross, Western Australia and the Sirolan Laserscan developed by the Australian Commonwealth Scientific and Industrial Research Organisation (CSIRO). Both of these devices are prohibitively expensive for individual growers with the OFDA200 retailing (as at the time of filing this application) for about AUD$75,000 and the Sirolan Laserscan for about AUD$95,000+. Additionally, each of these devices have stringent sample preparation procedures which, if prepared incorrectly, can either result in inaccurate readings or fouling of the device. For example, for the OFDA2000, the wool sample to be clipped and prepared before being placed into the machine for testing. The Sirolan Laserscan, requires the samples to be cleaned of any greasy residue for accurate laser measurements. This technology can take between 10 minutes (OFDA2000) to 6 weeks (out-sourced Laserscan via the Australian wool testing authority (AWTA)) to get results.
- CSIRO Australian Commonwealth Scientific and Industrial Research Organisation
- the OFDA2000 device is a benchtop device which may be operated from a dedicated briefcase-sized housing, but requires a connection to a computer device or laptop.
- the Sirolan Laserscan is a large benchtop device requiring connection to a personal computer and typically requires two extra people to operate the testing workflow in a shearing shed environment.
- a further animal fibre testing device is the Micron Meter available from FibreLux of Africa.
- the FibreLux unit is more compact than the OFDA2000 briefcase version and does not require a personal computer connection but still is too large to be operated single-handedly and still requires careful sample preparation including clipping a clean animal fibre sample, combing the animal fibres out to a preferred fibre density (i.e. sample not having too many or too few animal fibres) to be held in a sample holder which is inserted into the device.
- apparatus and devices including a portable digital microscope system capable of capturing images of raw animal fibre (e.g. wool) samples and measuring the mean diameter and standard deviation of the animal fibre samples.
- raw animal fibre e.g. wool
- the portable digital microscope system includes:
- a communications interface e.g. Wi-Fi/internet/SIM card.
- the hand-held device of the embodiments disclosed herein is configured for measuring wool diameter (micron) in real-time by capturing an image of the fibres (using specialised digital optics) on the animal and using proprietary algorithms, providing immediate fibre-diameter readings.
- This device allows wool growers to determine the value of their wool instantly, improve farming practices and increase revenue by accurate sorting of fleece. It will also open new previously unexplored areas, for testing at point-of-sale, pre-shearing and potential for tracking provenance.
- One embodiment provides a system configured for performing a method as described herein.
- an apparatus for real-time measurement of animal fibre characteristics may comprise a housing.
- the housing may comprise a sample window adapted to receive a sample of animal fibres.
- the housing may further comprise an optical imaging system, adapted to image animal fibres located on or adjacent the sample window.
- the housing may further comprise an imaging sensor to generate image data of the imaged animal fibres.
- the housing may further comprise a processor adapted to receive the image data and analyse the image data to determine at least one or more characteristics of the imaged animal fibres.
- the apparatus may further comprise a hinged portion hingedly fixed to the housing and resiliently biased into engagement with the housing.
- the hinged portion may comprise a light source adapted to illuminate sample animal fibres located on or adjacent the sample window.
- an apparatus for real-time measurement of animal fibre characteristics comprising: a housing, comprising: a sample window adapted to receive a sample of animal fibres; an optical imaging system, adapted to image animal fibres located on or adjacent the sample window; an imaging sensor to generate image data of the imaged animal fibres; and a processor adapted to receive the image data and analyse the image data to determine at least one or more characteristics of the imaged animal fibres; a hinged portion hingedly fixed to the housing and resiliently biased into engagement with the housing, the hinged portion comprising: a light source adapted to illuminate sample animal fibres located on or adjacent the sample window.
- the housing may be adapted to be hand-held.
- the optical system may comprise first and second imaging lenses adapted for imaging sample animal fibres located on or adjacent the sample window onto the image sensor.
- the optical system may be a microscope imaging arrangement.
- At least one or more characteristics of the imaged animal fibres may be selected from the group comprising: fibre diameter; mean fibre diameter; standard deviation of fibre diameter; coefficient of variance; comfort factor; colour; yield; point of break; and tensile strength.
- the apparatus may further comprise a first communications module adapted to communicate identifying information relating to the animal from which a fibre sample for test is obtained.
- the first communications module may be an RFID reader, telecommunications module (e.g. SIM card), Wi-Fi module, Bluetooth module, or the like.
- the apparatus may further comprise a second communications module adapted for communicating image analysis data generated by the processor to a user and/or database.
- a method of real-time measurement of animal fibre characteristics may comprise the step of providing an apparatus as disclosed in the first aspect for accepting a sample of animal fibres.
- the method may further comprise the step of clamping the animal fibres adjacent the sample window and clamping the fibres against the housing with the hinged portion.
- the method may further comprise the step of illuminating the animal fibre sample with light from the light source of the hinged portion.
- the method may further comprise the step of imaging the illuminated sample animal fibres with the optical system on to an image sensor.
- the method may further comprise the step of receiving image data from the image sensor in a processor.
- the method may further comprise the step of using a processor, analysing the image date to determine at least one or more characteristics of the imaged sample animal fibres.
- a method of real-time measurement of animal fibre characteristics comprising the steps of: providing an apparatus as claimed in Claim 1 for accepting a sample of animal fibres; clamping the animal fibres adjacent the sample window and clamping the fibres against the housing with the hinged portion; illuminating the animal fibre sample with light from the light source of the hinged portion; imaging the illuminated sample animal fibres with the optical system on to an image sensor; receiving image data from the image sensor in a processor; and using a processor, analysing the image date to determine at least one or more characteristics of the imaged sample animal fibres.
- the method may further comprise the step of identifying an animal prior to extracting a fibre sample from the animal including the step of using an RFID reader housed within the apparatus of the first aspect, reading an identification token attached to the animal, and storing identification data with one or more sample images obtained and analysed by the apparatus.
- the method may further comprise the step of communicating identified image analysis data generated by the processor to a user and or database.
- Figures 1A to 1C show example arrangements of a first embodiment of a handheld apparatus for real-time measurement of one or more characteristics of animal fibres
- Figures 1 D to 1 E show example arrangements of a second embodiment of a handheld apparatus for real-time measurement of one or more characteristics of animal fibres
- Figure 2 shows a schematic depiction of optical components contained within the housing of the apparatus of Figures 1 A to 1 E;
- Figure 3 shows a particular arrangement of the optical components of Figure 2;
- FIG. 4 shows a schematic depiction of the internal components of the apparatus of
- Figure s shows a graphical depiction of the usage workflow of the apparatus of
- Figure 6 shows a collection of synthetic images of straight fibres used to train the neural network model for determining characteristics of imaged animal fibres
- Figure 7 shows a collection of generated synthetic images of curved fibres used to train the neural network model for determining characteristics of imaged animal fibres
- Figure 8 shows a collection of training results validating the neural network analysis model.
- real-time for example “displaying real-time data” refers to the display of the data without intentional delay, given the processing limitations of the system and the time required to accurately measure the data.
- a process occurring “in real time” refers to operation of the process without intentional delay or in which some kind of operation occurs simultaneously (or nearly simultaneously) with when it is happening.
- near-real-time for example “obtaining real-time or near-real-time data” refers to the obtaining of data either without intentional delay (“real-time”) or as close to real-time as practically possible (i.e. with a small, but minimal, amount of delay whether intentional or not within the constraints and processing limitations of the of the system for obtaining and recording or transmitting the data.
- the various methods or processes outlined herein may be coded as software that is executable on one or more processors that employ any one of a variety of operating systems or platforms. Additionally, such software may be written using any of a number of suitable programming languages and/or programming or scripting tools, and also may be compiled as executable machine language code or intermediate code that is executed on a framework or virtual machine.
- inventive concepts may be embodied as a computer readable storage medium (or multiple computer readable storage media) (e.g. a computer memory, one or more floppy discs, compact discs, optical discs, magnetic tapes, flash memories, circuit configurations in Field Programmable Gate Arrays or other semiconductor devices, or other non-transitory medium or tangible computer storage medium) encoded with one or more programs that, when executed on one or more computers or other processors, perform methods that implement the various embodiments of the invention discussed above.
- the computer readable medium or media can be transportable, such that the program or programs stored thereon can be loaded onto one or more different computers or other processors to implement various aspects of the present invention as discussed above.
- program or “software” are used herein in a generic sense to refer to any type of computer code or set of computer-executable instructions that can be employed to program a computer or other processor to implement various aspects of embodiments as discussed above. Additionally, it should be appreciated that according to one aspect, one or more computer programs that when executed perform methods of the present invention need not reside on a single computer or processor, but may be distributed in a modular fashion amongst a number of different computers or processors to implement various aspects of the present invention.
- Computer-executable instructions may be in many forms, such as program modules, executed by one or more computers or other devices.
- program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types.
- functionality of the program modules may be combined or distributed as desired in various embodiments.
- data structures may be stored in computer-readable media in any suitable form.
- data structures may be shown to have fields that are related through location in the data structure. Such relationships may likewise be achieved by assigning storage for the fields with locations in a computer-readable medium that convey relationship between the fields.
- any suitable mechanism may be used to establish a relationship between information in fields of a data structure, including through the use of pointers, tags or other mechanisms that establish relationship between data elements.
- inventive concepts may be embodied as one or more methods, of which an example has been provided.
- the acts performed as part of the method may be ordered in any suitable way. Accordingly, embodiments may be constructed in which acts are performed in an order different than illustrated, which may include performing some acts simultaneously, even though shown as sequential acts in illustrative embodiments.
- a reference to “A and/or B”, when used in conjunction with open-ended language such as “comprising” can refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to both A and B (optionally including other elements); etc.
- the phrase “at least one”, in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements.
- This definition also allows that elements may optionally be present other than the elements specifically identified within the list of elements to which the phrase “at least one” refers, whether related or unrelated to those elements specifically identified.
- “at least one of A and B” can refer, in one embodiment, to at least one, optionally including more than one, A, with no B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, with no A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc.
- a hand-held device 100 adapted for measurement of the diameter or wool or other animal fibres/hair in real-time by capturing an image of the wool (or other animal fibres) fibres using specialised digital optics and using proprietary algorithms, providing an instant mean and standard deviation (average) diameter (size/micron) reading of the imaged animal fibres (e.g. sheep wool) to determine the fibre quality.
- the device 100 has the significant advantage that the wool fibres can be tested on the animal without any requirement for clipping the wool/animal fibres or to do any preparation of the animal fibre sample for use with device 100.
- Device 100 provides a further significant advantage in that it allows wool growers to determine the quality of their wool/animal fibres on their livestock instantly and in real-time, thus improving farming practices and increasing revenues by accurate sorting of fleece/fibres.
- the following description of the features and operation of device 100 is described in the specific context of the measurement of wool fibres from sheep, however, nothing in this specification precludes the device 100 from also being utilised to measure the diameter of alternate animal fibres as would be appreciated by the skilled addressee including, for example (but not limited to): alpaca hair; angora (rabbit) hair; mohair (goat); or cashmere (goat) wool, and the like.
- FIGS 1 A to 1C show a first example embodiment of device 100 adapted for single-hand-held operation for the testing of animal fibres including sheep wool.
- Device 100 includes a housing 101 adapted to provide a secure grip on device 100 by a human operator.
- Device 100 includes selector controls 103 and a display screen 105.
- Device 100 comprises a hinged portion 110 connected to a distal end of device 100 by hinge means 111.
- hinge means 111 may be a torsion spring hinge mechanism.
- Torsion spring hinge mechanism 111 is preferably resiliently biased to close the hinged portion 110 towards device housing 101.
- Hinged portion 110 is adapted to be operated one-handed by a user’s hand.
- the user holds the housing 101 of device 100 such that their thumb is oriented to depress a proximal edge 112 of hinged portion 110.
- hinged portion 110 articulates about hinge 111 to expose sample window 130 of device 100 adapted to receive an animal fibre sample for test.
- the user opens hinged portion 110 to expose the sample window 130, places or captures an animal fibre sample over window 130 and the user then releases hinged portion 110 such that the animal fibre sample is clamped against sample window 130 by hinged portion 110.
- Teethed portions 107 to assist in retaining a sample of animal fibres in position when clamped against sample window 130 by hinged portion 110. Teethed portions 107 also act to space out the animal fibres of the sample to assist in maintaining an optimal sample thickness fortesting. Teeth portions 107 may optionally be provided as complementary removable plates 109 as shown in inset of Figure 1 B to allow the plates to be easily replaced to provide a clean surface for accurate measurement of the animal fibres, or alternatively removed for cleaning. Such removable plates include the teeth portions 107 and is optically transparent adapted to cover sample window 130 of housing 101 and optical window 135 of hinged portion 110 to keep optically transparent windows 130 and 135 clean of animal fibres, oils and environmental contaminants such as dust.
- sample plate 109a is adapted to be attached to one side of the sample area e.g. to hinged portion 110 to protect optical window 135 and sample plate 109b is adapted to be attached to the other side of the sample area e.g. to housing 101 to protect sample window 130.
- Removable and replaceable complementary sample plates 109a and 109b including complementary teeth portions 107 provide a significant advantage to operation of device 100/200 in the field or shed environment where conducting large numbers of measurements of animal fibres may be likely to leave dirt, grime or greasy residue on the sample window 130 and or optical window 135 of hinged portion 110.
- Removable sample plates 109a and 109b are easy to clean or be substituted for new, clean plates 109a and 109b to ensure the sample window 130 and optical window 135 remain clean as degradation of the optical transmission of one or both of windows 130 or 135 has a significant impact on the amount of light available for illuminating an animal fibre sample and for imaging of the animal fibre sample onto the image sensor 150.
- Figures 1 D and 1 E show a further example embodiment 200 of an animal fibre testing device.
- Like reference signs of Figures 1 D and 1 E refer to like components as described with reference to Figures 1 A to 1C.
- Figure 2 shows a schematic depiction of optical components contained within housing 101 of device 100, including a light source 131 within hinged portion 110.
- Light source 131 may be selected from the group of an incandescent bulb, LED light source, or laser.
- a white light bulb or LED source may be used, or alternatively, light having a particular wavelength range may be used.
- a possible light source may be an LED emitting light generally in the green region of the optical spectrum, e.g. with a wavelength emission centred on or about 525 nm such as product no. LED525L available from Thorlabs of Newton, New Jersey, United States. Selection of a limited wavelength range of emission is advantageous as improved resolution in the imaging may be achieved as compared with a white light source.
- the optical power output 131a provided by light source 131 may be in the range of about 1 to 20 mW and may be optionally in the range of about 5 mW ⁇ 2 mW.
- Light source 131 may be chosen on the basis of the output wavelength where a light source with shorter wavelength may be chosen to provide increase optical resolution to resolve individual animal fibres of the sample under test.
- hinged portion 110 may be a modular component adapted to be easily removed from fibre test device 100 and replaced with a further hinged portion comprising a light source 131 with different optical characteristics, such as a particular output wavelength advantageously suited for measurement of particular animal fibres.
- a plurality of such modular hinged portions 110 are provided, each hinged portion particular optimised for testing of a particular type of animal fibre.
- Light source 131 is preferably powered from a battery 133 housed within hinged portion 110.
- Hinged portion 110 includes an optical window 135 to permit light generated by light source 131 in use to illuminate sample window 130 located within housing 101 of device 100.
- An optical diffuser may optionally be provided in front of sample window 130 (i.e. intermediate optical source 131 and sample window 130) to distribute the light from source 131 evenly across the sample plate 130 and the animal fibres under test, and also to minimise or substantially eliminate bright spots in the illumination of sample plate 130 and the animal fibres under test.
- an animal fibre sample located on sample window 130 is imaged by an objective lens 139.
- the objective lens may provide a magnification of at least 10-times and have a numerical aperture of about 0.25-0.30.
- Alternative objective lens 139 may be selected on the basis of the desired optical resolution and the physical distances between the sample window 130 and image sensor 150 such of a camera 151 in the housing 101 of devicel 00, as would be readily appreciated by the skilled addressee.
- a tube lens 141 is provided to focus light imaged from sample window 130 by objective 139 onto image sensor 150.
- Tube lens 141 in particular arrangements may be an infinity corrected achromatic lens with a focal length of about 50 mm.
- the optical components of device 100 comprise an infinity-corrected optical system, where light 140 from an animal fibre sample located at sample window 130 passes through objective lens 139 which does not form an image and thus the light enters as an infinity-parallel beam in the tube lens 141 which forms an intermediate image on image sensor (or camera) 150.
- Figure 3 shows a particular arrangement of the optical components located within housing 101 , including sample window 130 comprising a glass plate or cover slip; objective lens 139 receiving light 140 from animal fibres located at sample window 130; tube lens 141 and image sensor (camera) 150 mounted on a heat sink 155.
- the optical system length is about 200 mm from the sample window 130 to the rear of the image sensor heat sink 155 thus housing 101 of device 100 in this presently described example arrangement would need to be at least about 200 mm long.
- different selection of the optical components within housing 101 for imaging the animal fibre sample on sample window 130 would lead to respective changes in the optical component separation distances and thus would affect the total size of housing 101 as would be appreciated by the skilled addressee.
- a particular fibre test device 100 may include a higher magnification objective lens 139 for increased resolution in the imagine of the animal fibres on sample window 130 which would lead to a larger device 101.
- the position of tube lens 141 with respect to objective 139 is adapted to be variable to provide optimal optical imaging of an animal fibre sample located at sample window 130.
- an objective lens 139 having different optical properties may be used which would necessarily require modification of the spacing between remaining components of the optical system 200 of device 100.
- objective lens 139 and tube lens 141 may be modular, for example a user may be able to swap out objective lens 139 and complementary tube lens 141 within housing 101 for a new combination of objective lens 139 and complementary tube lens 141 to provide a different magnification of the animal fibres on the sample window 130 which can be advantageous for testing of different quality (grade) of animal fibres, e.g. coarse or fine fibres where a higher magnification may be desirable.
- FIG. 4 shows a schematic outline of the complete components of device 100 including optical system 200 described above.
- the device includes an RFID reader module 201 to read RFID tags of livestock to enable association of fibre measurements with livestock individuals.
- a processor 203 is included within housing 101 to integrate the various components of device 100 including image sensor 150, display 105, RFID module 201 ; light source 131 , and a communication module 209.
- Communication module 209 may comprise, for example, a telecommunications modem able to accept a telecommunication SIM card (e.g.
- Memory 207 is adapted to store operating software instructions for processor 203 for operation of the components of device 100 including: interfacing with RFID module 201 and communication modem 209; initiating a sample measurement of animal fibres located on sample window 130; receiving image data from image sensor 150; and analysing the image sensor data to determine the diameter and optionally, other properties, of the sample under test. Memory 207 is also utilised to store the image data and image analysis result data for subsequent communication to a centralised database.
- Flousing 101 also includes a power input (charging) port 211 , which may be, for example, a USB port or similar power input port for charging batteries 215 and 133.
- Input port 211 provides power to internal power supply 213 to provide power to device 100 and also to charge an internal battery 215 within housing 101 and also battery 133 within hinged portion 110, for mobile operation of device 100.
- input port 211 may further be a communications port to enable control of processor 203 for tethered operation of device 100, or access to device memory 207 to download recorded measurement data from device 100.
- Figure s outline the usage workflow of device 100 of determining the diameter of a sample of wool from a sheep 501 , comprising the steps of:
- a selection of animal fibres 505 is selected from selected sample site 503 of animal 501 (in the present example wool fibres of sheep 501) and separated from remaining fibres.
- User holding device 100 opens hinged portion 110 to admit selected fibres 505;
- ⁇ (Panel D) Selected fibres 505 are clamped between hinged portion 110 and against sample window 130;
- ⁇ (Panel E) Fibres 505 are illuminated by with light generated by light source 131 and imaged by the optical system depicted in Figure 2 onto image sensor 150;
- Received image is analysed by processor 203 to determine, at least, the diameter (mean and standard deviation) of fibres 505 and the result of the image processing including the measured diameter of fibres 505 is displayed to the user on display 105.
- Measured fibre characteristics are associated with the scanned RFID tag record and stored in memory 207.
- handheld measurement device 100 is able to scan animal fibres directly on the animal with minimal or zero sample preparation.
- the animal fibres are imaged by optical microscope system 200 housed within housing 101 of device 100 onto a high-resolution imaging sensor 150 and the captured image is analysed by onboard processor 203 to determine the characteristics of the fibres under test including mean and standard deviation of the fibre diameter. Other characteristics may also be determined by the image processing as would be appreciated and with appropriate modifications to the optical system and or image processing analysis associated with an improved device 100.
- the images generated by image sensor 150 are generated with pre-specified distribution parameters.
- the thickness distribution parameters are used as ground truth. Flowever, this is problematic because it may not reflect the actual image content. For example, consider generation of an image of fibres with mean thickness of 20 pixels, standard deviation 5 pixels, and where the image contains a single fibre whose thickness is sampled from that distribution at 24 pixels.
- the ground truth mean thickness of 20 pixels is very different from the actual image content of 24 pixels.
- dense ground truth is computed from generated synthetic images. For each image, as an image of each fibre is drawn, its width is sampled along the fibre. These samples are assembled for all fibres in the image, and the ground truth mean and standard deviation of thickness is computed from the samples.
- the dense ground truth method more closely reflects the laser measurement method of chopping up fibres and sampling them.
- ResNet-50 available in MATLAB® is a convolutional neural network that is 50 layers deep which includes a pre-trained module capable of identifying common objects from new image.
- ResNet-50 available in MATLAB® is a convolutional neural network that is 50 layers deep which includes a pre-trained module capable of identifying common objects from new image.
- two outputs of the Resnet 50 architecture are used, one output for the mean fibre thickness and the second for the standard deviation of the fibre thickness in the analysed image.
- a synthetic data set is used for training the model. Once trained, the model is proofed on further synthetic image data using a direct regression network before usage on real image data from device 100.
- a database of sample images generated from a prototype of device 100 was used in these experiments.
- Image augmentation was used to address the very small data set size including image resizing, cropping, rotation, hue-saturation variations, image flips and per-channel normalisations. Care is taken not to change the scale of the images during augmentation since this would interfere with thickness measurements.
- a segmentation model In an alternative image processing procedure, a segmentation model, the process first attempts to determine what pixels of the input image belong to a particular fibre, and then directly measures the widths of individual fibres based on the identified pixels. The first stage is carried out by an instance segmentation model, which shares many similarities with the regression model described above, however it aims to predict different outputs - a set of pixel masks instead of two discrete values. Compared to the regression model above, the segmentation model is effective at its task, despite being slightly larger and slower. The second stage of the segmentation model implements optimised pixel distance measuring algorithms to sample many distance measures per fibre, which are combined to determine the mean and standard deviations for a single image.
- Both the regression and segmentation models are data driven (deep) machine learning models, and utilised in the fully supervised learning regime, meaning they both require many annotated data points to learn from.
- ‘fake’ wool images were generated to train the image processing models.
- the wool image generation algorithm used to generate the fake wool images is able to generate completely random, but realistic wool-like images.
- Generating synthetic wool training dataset including the steps of: (a) Generating background, noise blotches, other noise, and fibre texture layer images by hand;
- (f) Scaling the calculated distance by a pixel to micron factor, and by a threshold scaling factor adapted to make up for consistent errors across all masks to counteract for such consistent errors in which the model masks consistently wider or thinner than actual fibre widths - the threshold scaling factor shifts the entire resulting distribution left or right to better align with the ground truth distribution.
- the scaling factor is between about 1 and 1 .1 , so only a very slight shift is necessary in the present model arrangement indicating the strength of the synthetic training data used to train the model.
- the scaling factor is calculated by averaging width distances between the results from the image processing procedure described above and the ground truth test set;
- the regression and segmentation image processing procedures are executed by program software code adapted to be executed by a computer processor.
- the image processing training steps are executed by a computer processor to provide a trained image processing model and this trained image processing model is stored in memory 207 of device 100 to be executed by processor 203 of device 100 to analyse actual animal fibre samples place on sample window 130 as required.
- the actual software code for either training the image processing models or analysing real wool samples may be implemented in numerous different variations in the actual software code without marked or significant modification of the image analysis process or the output from the software analysis of images of real wool fibres obtained by use of device 100 to analyse real animal fibre samples placed on sample window 130
- the model training steps may be modified to provide an optimum trained image processing model adapted to particular types of animal fibres.
- Many such models may be stored in memory 207 of device 100 to be selected on demand and executed by processor 203 of device 100 to analyse particular types of animal fibre samples.
- particular trained models designed for analysis of particular types of animal fibres may be uploaded to memory 207 of device 100 on demand to executed by processor 203 of device 100 as required.
- ‘in accordance with’ may also mean ‘as a function of’ and is not necessarily limited to the integers specified in relation thereto.
- a computer implemented method should not necessarily be inferred as being performed by a single computing device such that the steps of the method may be performed by more than one cooperating computing devices.
- database and its derivatives may be used to describe a single database, a set of databases, a system of databases or the like.
- the system of databases may comprise a set of databases wherein the set of databases may be stored on a single implementation or span across multiple implementations.
- database is also not limited to refer to a certain database format rather may refer to any database format.
- database formats may include MySQL, MySQLi , XML or the like.
- the invention may be embodied using devices conforming to other network standards and for other applications, including, for example cellular, or WLAN standards and other wireless standards.
- Communication protocols that can be accommodated include, but are not limited to, IEEE 802.11 wireless LANs and links, wireless Ethernet, Bluetooth, NFC, and the like.
- cellular communications methods may be incorporated into the device for remote connectivity including, for example GSM, CDMA, EDGE, 3G, 4G, 5G, and the like.
- wireless and its derivatives may be used to describe circuits, devices, systems, methods, techniques, communications channels, etc., that may communicate data through the use of modulated electromagnetic radiation through a non-solid medium.
- the term does not imply that the associated devices do not contain any wires, although in some embodiments they might not.
- the term “wired” and its derivatives may be used to describe circuits, devices, systems, methods, techniques, communications channels, etc., that may communicate data through the use of modulated electromagnetic radiation through a solid medium. The term does not imply that the associated devices are coupled by electrically conductive wires.
- processor may refer to any device or portion of a device that processes electronic data, e.g. from registers and/or memory to transform that electronic data into other electronic data that, e.g. may be stored in registers and/or memory.
- a “computer” or a “computing device” or a “computing machine” or a “computing platform” may include one or more processors.
- the methodologies described herein are, in one embodiment, performable by one or more processors that accept computer-readable (also called machine-readable) code containing a set of instructions that when executed by one or more of the processors carry out at least one of the methods described herein.
- Any processor capable of executing a set of instructions (sequential or otherwise) that specify actions to be taken are included.
- a typical processing system that includes one or more processors.
- the processing system further may include a memory subsystem including main RAM and/or a static RAM, and/or ROM.
- some of the embodiments are described herein as a method or combination of elements of a method that can be implemented by a processor or a processor device, computer system, or by other means of carrying out the function.
- a processor with the necessary instructions for carrying out such a method or element of a method forms a means for carrying out the method or element of a method.
- an element described herein of an apparatus embodiment is an example of a means for carrying out the function performed by the element for the purpose of carrying out the invention.
- a device A connected to a device B should not be limited to devices or systems wherein an output of device A is directly connected to an input of device B. It means that there exists a path between an output of A and an input of B which may be a path including other devices or means.
- Connected may mean that two or more elements are either in direct physical or electrical contact, or that two or more elements are not in direct contact with each other but yet still co-operate or interact with each other.
- references throughout this specification to “one embodiment”, “an embodiment”, “one arrangement” or “an arrangement” means that a particular feature, structure or characteristic described in connection with the embodiment/arrangement is included in at least one embodiment/arrangement of the present invention.
- appearances of the phrases “in one embodiment/arrangement” or “in an embodiment/arrangement” in various places throughout this specification are not necessarily all referring to the same embodiment/arrangement, but may.
- the particular features, structures or characteristics may be combined in any suitable manner, as would be apparent to one of ordinary skill in the art from this disclosure, in one or more embodiments/arrangements.
Abstract
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AU2002301305A1 (en) * | 2001-10-03 | 2003-06-12 | Laserdyne Pty Ltd | Portable Measuring Device |
WO2018139942A1 (en) * | 2016-10-18 | 2018-08-02 | Quispe Pena Edgar Carlos | Portable electronic device for characterising fibres of animal origin |
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AU2002301305A1 (en) * | 2001-10-03 | 2003-06-12 | Laserdyne Pty Ltd | Portable Measuring Device |
WO2018139942A1 (en) * | 2016-10-18 | 2018-08-02 | Quispe Pena Edgar Carlos | Portable electronic device for characterising fibres of animal origin |
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"Fibrelux Micron Meter", 22 June 2022 (2022-06-22), Retrieved from the Internet <URL:https://www.fibrelux.co.za/about-the-fibrelux-micron-meter> [retrieved on 20180302] * |
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