Guy Coleman @GeezaColeman Twitter profile

Last Seen Profiles

@asimiqbal112

@inuixxx

@bokeplokalmalam

@ViktorMaru

@puwpaps

@Aadorah

@kaylaForTacha

@isigmeclisi

@iambgtea

@Tazkarti

@bobbrowner1

@BDesniar

@__insideout1

@IvanShestov

@NeonToffee_

@KesknBilal

@ASULibraries

@stw_pdg

@Patricia_ykk

@naurtorious

@BinorRaja

@jenny_ganguli

@BinorRaja

@TotirrtethGJe

@VioletVented

@bobbrowner1

@emery_desu

@ScienceRDC

@Reputable_Tech

@wonkyiun

@stw_pdg

@badgirlmannu

@JordArfm

@lichenmire

@CandaceGra71623

@JamesAJanisse

Guy Coleman

@GeezaColeman

2 years

About 15 years ago as a kid I remember driving with my dad/sister to chat with a farmer near Lake King about their latest 'GPS' technology. Now, driving just near Hyden dad comes across a @SwarmFarm robot spot spraying weeds in fallow. What will we see in 15 years time?

16

41

343

Guy Coleman

@GeezaColeman

7 months

Life is strange. In the gap between finishing the PhD and starting a new job at University of Copenhagen, I've been diagnosed with early stage Hodgkin's Lymphoma. Fortunately, surrounded by my amazing family, friends and medical professionals to get me cured with chemo.

95

6

323

Guy Coleman

@GeezaColeman

4 months

So how many spot spraying companies are there now? With accessibility of tech and the clear margins involved, the spot spraying market has flourished. Here's a (non exhaustive) thread of all that I've come across.

14

53

252

Guy Coleman

@GeezaColeman

4 months

12/12 chemo sessions done. Recovery now.

18

0

217

Guy Coleman

@GeezaColeman

1 year

Final presentation for the PhD done from 12am in Copenhagen! Now to write the thing...

13

12

194

Guy Coleman

@GeezaColeman

5 months

I think the best start to a Monday I've ever had. All cancer gone, now just two more cycles to consolidate. Medicine is incredible. #checkyourlumps

19

1

197

Guy Coleman

@GeezaColeman

5 years

Using colour to discriminate weeds from ginger in a drone video. No ML, just computer vision techniques, though suggests opportunities for high accuracy ML detection rates. @AgriFuturesAU @Sydney_Science

3

33

182

Guy Coleman

@GeezaColeman

2 years

Testing out some improved visualisations of which solenoids are on. Much easier to track than the previous text-based option.

8

15

163

Guy Coleman

@GeezaColeman

5 months

OpenWeedLocator 2.0 is here! Features: 1. Full support for picamera2, picamera so you can now use the latest Global Shutter and V3 cameras on the Pi 5. 2. Entirely new enclosure designs, both 3D printable and aluminium. 3. Up to 120FPS processing speed on the Pi 5 at 320 x 416.

6

27

146

Guy Coleman

@GeezaColeman

5 years

Real-time detection of ryegrass in wheat. This example shows that technology isn't the barrier anymore, it's the availability of opensource datasets for Australian conditions. E.g. this example would only work well at @pbinarrabri @theGRDC @GRDCNorth

1

44

142

Guy Coleman

@GeezaColeman

9 months

PhD submitted! A challenging but super fun few years at @SiaSydney @TAMU and @KU_PLEN #phdone

16

0

134

Guy Coleman

@GeezaColeman

3 months

Started in a pandemic and ended in chemo, but this PhD has been such an incredible experience @SiaSydney . Challenging but very rewarding, I'm very grateful for everyone that's helped along the way. You can read the full thesis here:

12

8

120

Guy Coleman

@GeezaColeman

3 years

Green-on-green (GoG) camera spraying tech is moving quickly. Better algorithms, commercialisation, more crops and more weeds. So where are we now for large-scale ag? A quick summary of tech, companies and the future below. 1/ 📷🌱🎯🧵

11

30

110

Guy Coleman

@GeezaColeman

10 months

DIY green-on-brown weed detection system in 3 main parts for ~US$200. 1. Raspberry Pi 4 - US$55 2. HQ Camera + lens - US$75 3. OWL Driver Board - ~US$45 (4. enclosure/wiring - ~US$25) Solenoids/nozzles/plumbing are then the most expensive parts.

Guy Coleman

@GeezaColeman

10 months

New OpenWeedLocator PCB! Combines power supply (7 - 26V), relays and Pi protection into one board. Short demo assembly video below. Designed by my brother, all files available here if you want to build:

7

8

66

5

13

104

Guy Coleman

@GeezaColeman

7 months

A week in, can confirm that chemo is pretty miserable, but also amazing. Lumps in my neck you could easily see have shrunk considerably. Impressive science behind it all! Buzz cut next.

Guy Coleman

@GeezaColeman

7 months

Life is strange. In the gap between finishing the PhD and starting a new job at University of Copenhagen, I've been diagnosed with early stage Hodgkin's Lymphoma. Fortunately, surrounded by my amazing family, friends and medical professionals to get me cured with chemo.

95

6

323

11

0

106

Guy Coleman

@GeezaColeman

3 years

Want to build your own green-on-brown weed detector for ~$400? Our #OpenWeedLocator paper is now out! We go through all the details of the design, construction and validation parts of the project. Open-access: @williamtsalter @Sydney_Science @SiaSydney

5

21

96

Guy Coleman

@GeezaColeman

5 months

Treadmill test bed for the OWL. 16kmh + data recording with the new controller. Needs a faster treadmill!

4

10

94

Guy Coleman

@GeezaColeman

3 months

Another OWL kit almost ready to go. All the components you need in one neat package - $550 + GST. Send me a message if you need one!

10

18

95

Guy Coleman

@GeezaColeman

5 years

A ryegrass in wheat detection sneak preview, before the @pbinarrabri field day on Wednesday! @SiaSydney

0

18

93

Guy Coleman

@GeezaColeman

3 years

Very excited to have won first place in the @ASA_CSSA_SSSA Precision Agriculture Systems community grad presentations at the #ACSmtg this week. Massive thanks to @MBagavathiannan and the TAMU weed science lab for all their help and @AustAmFulbright for the opportunity.

22

5

95

Guy Coleman

@GeezaColeman

5 years

We have liftoff! Green on brown spot-spraying is a go, using some nifty #OpenCV @PyImageSearch contour detection and object tracking. Transfer learning and 6m expansion next #agchatoz

3

14

92

Guy Coleman

@GeezaColeman

3 months

After 5 months stuck in a 5km radius of home/hospital, getting to Kalgoorlie/Salmon Gums/Esperance has been fantastic. Have sorely missed the wheatbelt. Cherry on top seeing @SwarmFarm robot with the OWL in person

2

3

92

Guy Coleman

@GeezaColeman

2 years

The OpenSourceAg newsletter is here! As a starting point for an open-source (OS) community in ag, it will feature: 🌱summaries of latest tech for data, algos, field use 🌱stories from OS founders 🌱projects 🌱community comments Signup here:

4

21

84

Guy Coleman

@GeezaColeman

1 year

2 years ago @williamtsalter and I launched the OpenWeedLocator. Since then it's been built in 8 countries, adapted for uses well beyond what we envisaged. Open-source lets everyone innovate. And lots more to come still!

0

11

82

Guy Coleman

@GeezaColeman

11 months

Seems strange this needs to be said - but agtech shouldn't cost what it is expected to save you. This only reinforces a need for open source options. Parts for an OpenWeedLocator are around US$250

Justin Rose

@JustinRoseDeere

11 months

@MillerFarm06 @Deere_Salesman @JohnDeere The way we are thinking about it is starting with the value creation for the farmer. Think about your chemical program and how much cost you'd save if S&S can reduce that by 60-70%. Most growers tell me "fair" would be Deere charging ~1/3 of that value...

7

0

2

9

74

Guy Coleman

@GeezaColeman

11 months

From just a couple of spot-spray systems at Agritechnica 2019 to

7

12

80

Guy Coleman

@GeezaColeman

5 years

A prototype spot spraying blue lupins in narrow leaf lupins, using early season data with the @NVIDIAEmbedded Jetson Nano. Early days still, but an exciting prospect for the 2020 season with lots to improve.

4

24

77

Guy Coleman

@GeezaColeman

4 years

Our first published results on laser weeding for control of annual ryegrass are now up! 100% control of the 3 and 7 leaf ryegrass plants at 76.4J/mm2 (60 secs @ 25W), which quickly disappeared for the older plants. @WeedControlLab @Sydney_Science

Frontiers | Low Energy Laser Treatments Control Annual Ryegrass (Lolium rigidum)

Increasing concern for the ongoing availability and efficacy of herbicides is driving interest in the development of alternative physical and thermal weed co...

www.frontiersin.org

4

23

76

Guy Coleman

@GeezaColeman

8 months

What an experience this has been. Can't thank @bryceives @evokeAG and the Agrifutures team enough for giving me this opportunity. Onwards and upwards for open source agtech and the OWL. Public funds. Public recipes.

AgriFutures evokeAG

@evokeAG

8 months

Currently involved in R&D of autonomous weed control platforms, Guy Coleman is passionate about the importance of open-source technology, and how public tech ‘recipes’ can help everyone innovate. We’re excited to count @geezacoleman as an evokeAG 2024 Future Young Leader 👏

1

23

8

3

75

Guy Coleman

@GeezaColeman

4 years

Highly targeted spray delivery system in the works. Combining the @NVIDIAEmbedded Jetson Nano, some actuators and a few nozzles! @Sydney_Science @AgriFuturesAU

7

8

74

Guy Coleman

@GeezaColeman

5 years

Some fantastic flows around the Dunedoo area! Lots of wet paddocks and much needed showers between Cooonabarabran and Wellington. @ABCRural

3

10

73

Guy Coleman

@GeezaColeman

2 months

It's fairly often I hear ag sales people justify the > $300k cost of camera sprayers with 'but the farmers will pay it off in a couple of years' Pricing systems based on estimated ROI in a risky industry just undermines adoption and innovation. Irks me big time.

6

71

Guy Coleman

@GeezaColeman

3 years

Recognition of Palmer amaranth in some Texan cotton across eight different growth stages with the YOLOv5 architecture. Data collected for training on a FLIR camera, but run on video a phone. Always amazing to see how it turns out. @AustAmFulbright @SiaSydney

5

18

72

Guy Coleman

@GeezaColeman

1 year

Weed detection in just two lines of code. Just released the openweedlocator-tools software package for easier integration of both green-on-green and green-on-brown detection. Check it out here:

3

17

72

Guy Coleman

@GeezaColeman

5 months

Open-source data collectors almost ready to head to Esperance. Ending up on SP sprayers and @SwarmFarm robots for large scale image data collection. @ezi_farmdata

5

4

71

Guy Coleman

@GeezaColeman

2 years

Spot the difference: One collected at 5km/h, the other at 30km/h, dust and all. Both with the #OpenWeedLocator software.

3

70

Guy Coleman

@GeezaColeman

2 months

Some awesome work from @danbloomer1 and team in New Zealand getting an ATV-mounted OWL sprayer going. Added a display/controller to solenoid nozzle activation.

2

8

69

Guy Coleman

@GeezaColeman

5 years

Very excited to be taking my PhD research into plant and #machinelearning interactions to @TAMU with @MBagavathiannan as part of an @AustAmFulbright Future Scholarship. Lots of opportunity to collaborate and improve weed control opportunities globally through ML weed detection.

Sydney Science

@Sydney_Science

5 years

Six of our science researchers, students and alumni have been awarded Fulbright Scholarships.⭐️ Prof Paul McGreevy, @ProfZdenka , @GeezaColeman , Nicholas Hindley, Alice Yan + Ruebena Dawes will undertake further study and research in the US. Read more: 👏

0

6

37

9

12

68

Guy Coleman

@GeezaColeman

3 years

Recognising blue lupins in narrow leaf lupins near Geraldton, WA YOLOv5 L trained on 217 images from @WeedAI_news dataset. Training images are younger/yellower soil, so quite a few false detections here. @nick_mckenna1

2

9

67

Guy Coleman

@GeezaColeman

4 years

There's something very satisfying about turning code into real-world movement (one of the reasons I enjoy Python so much!). Not too long now until the first prototype implement for ginger site-specific weed control is set up! @AgriFuturesAU @SiaSydney @Sydney_Science

2

8

66

Guy Coleman

@GeezaColeman

6 years

Prototyping in rural areas means access to stacks of space for field tests. 6m boom mounted and out for a test run.

3

11

66

Guy Coleman

@GeezaColeman

2 months

Three years ago today, @williamtsalter and I launched the OpenWeedLocator as a new approach to offering weed detection to farmers. DIY, low-cost and accessible.

2

10

66

Guy Coleman

@GeezaColeman

10 months

New OpenWeedLocator PCB! Combines power supply (7 - 26V), relays and Pi protection into one board. Short demo assembly video below. Designed by my brother, all files available here if you want to build:

7

8

66

Guy Coleman

@GeezaColeman

5 months

Found a local stash of blue lupins on the afternoon walk. 34 images annotated before dinner (27 used for training). Quite overfitted (more data needed). Still, pretty cool YOLOv8 result:

4

5

66

Guy Coleman

@GeezaColeman

2 years

When I started using the @Raspberry_Pi to learn Python back in 2018, I never thought I'd be on a project in the official magazine - @TheMagPi ! An exciting start to the weekend. OWL workshop is also on next week: @williamtsalter @Sydney_Science @SiaSydney

3

10

66

Guy Coleman

@GeezaColeman

7 months

Testing out YOLOv8 segmentation on some @AgriFuturesAU ginger industry data. Pretty impressive out the box performance on a 1238 image dataset.

4

3

63

Guy Coleman

@GeezaColeman

4 years

@grassrootsag @WeedAI_news @WeedControlLab @WeedSmartAU @williamtsalter Here's a bit of testing we did on some tracks around where we work. The algorithm is picking out green colour and spraying just those instead. No machine learning involved - rough cost of a single detection unit is ~$300 (Raspberry Pi, camera, relay board, power supply).

8

14

65

Guy Coleman

@GeezaColeman

11 months

Research on the performance of image-based weed detection on grass/broadleaf up to 30km/h now up online. Using the OpenWeedLocator, the Arducam camera could find up to 79% of oats and 92% of radish at 30km/h. @Macintyre_an @williamtsalter @SiaSydney

3

15

64

Guy Coleman

@GeezaColeman

3 years

Want to learn how to build an #OpenWeedLocator ? We're holding a live (online) assembly & demo on 4th May, 12pm (AEST)! Step-by-step walkthrough on hardware assembly & software installation with myself & @williamtsalter . @SiaSydney @Sydney_Science

3

13

64

Guy Coleman

@GeezaColeman

2 years

About 50 years ago, the tech behind reflectance-based 'green-on-brown' sprayers was published. Since then a lot (!) has changed. We went through ~175 papers from the last 50 years of weed recognition research for this review.

2

14

61

Guy Coleman

@GeezaColeman

9 months

Challenge First farmer/farmer group to send 1k images of a weed in-crop, I'll annotate for free, upload to WeedAI and use to train a public, benchmark model for the OWL. Rough requirements: 1. about 1 - 5 weeds per image 2. top down (examples below) 3. decent quality/consistent

4

17

60

Guy Coleman

@GeezaColeman

2 years

2m spot spraying boom in the making for the @MingenewExpo next week, with @eyres_N welding up the frame. Will be demoing the #OpenWeedLocator and talking about how open source tech can help bring the next generation of students into ag!

6

58

Guy Coleman

@GeezaColeman

5 months

Pretty incredible you could buy ~20 high end humanoid robots for the price of a OSST boom

Simon Kalouche

@simonkalouche

5 months

$14k humanoid from @UnitreeRobotics

14

59

385

7

3

59

Guy Coleman

@GeezaColeman

11 months

So it begins - speed running a square mile of ag machinery and tech at Agritechnica Dream come true!

5

0

56

Guy Coleman

@GeezaColeman

3 months

Another OWL in the wild with @ezi_farmdata for image data collection on a @SwarmFarm Robot. Large scale, open-source image data collection.

1

6

56

Guy Coleman

@GeezaColeman

2 years

As someone who has never used tkinter before, #ChatGPT let me build a basic Python 'app' for a niche problem in about 3 hours. It makes lots of errors, but the efficiency gained is huge. Full code to use this (for any sort of colour-based analysis):

John Stevenson

@cropmad

2 years

Can anyone point me in the direction of software which can differentiate colours into percentages. Looking to calculate losses from Gilgai’s @jakeonfarm

28

2

40

5

3

56

Guy Coleman

@GeezaColeman

5 months

Weed detection technology is really going to give us some pretty unparalleled insights into weed movement. Combine that with species, growth stage layered with weather/field data...

Brett

@brettswff

5 months

@BartParks Dude there’s so much blowing in off neighbors in the Golden Ghetto. We mainly treated edges this week and if you look around you can see exactly where it’s coming from. See and Spray map tells the story

5

3

54

3

8

53

Guy Coleman

@GeezaColeman

4 years

Seeing some decent control of large ryegrass plants with the 25W laser. 4 mins on the left; untreated on the right. 4 mins is clearly too long, but a 1000W laser for example, would see the same energy delivered in just 6 seconds.

5

10

54

Guy Coleman

@GeezaColeman

2 months

Currently getting 30-40cm weeds, but looking for 10-20cm weeds in the future with satellite imagery @data_farming @TimNeale1 Impressive opportunities for reducing capital expenditure, at trade off of getting smaller weeds

5

10

53

Guy Coleman

@GeezaColeman

6 months

All files for V2.1 of the OWL driver board now up. Four channel control via GPIO/PWM. Neat hat for robotics automation too. Designed by my brother, a big fan of open hardware.

1

4

52

Guy Coleman

@GeezaColeman

6 months

Exciting times - new OWL enclosures arrived. Rough draft of the picamera2/Raspberry Pi 5 version running now too. Will merge it once tested/properly written up. Give it a whirl here:

5

48

Guy Coleman

@GeezaColeman

2 years

Gordon (the robot) is looking for a new home! A short history of the construction and why you could be the proud owner of a 2 x 1.5 x 1.5 m robot🤖 Features: > 350W motors x 2 > thin wires/dodgy connections > 400W solar > eBay parts > Bunnings aluminium > Here+ RTK GPS/Pixhawk

6

9

52

Guy Coleman

@GeezaColeman

4 months

Real time detection with the OWL at 16 kph. 60 FPS at 640 x 480 resolution. 20cm gap between OWL and the light. Red lines indicate field of view of camera.

2

7

50

Guy Coleman

@GeezaColeman

11 months

Open-source development and investment can transform agricultural research. Super appreciative of @evokeAG for giving a platform to this idea at one of the largest agtech events in Australia.

AgriFutures evokeAG

@evokeAG

11 months

Introducing @GeezaColeman , a #2024FutureYoungLeader and the brains behind the @openweedlocator (OWL) and Weed-AI platform. The OWL is an open-source, DIY, low-cost fallow weed detector, transforming precision weed control. Watch Guy's application video

0

1

12

3

7

51

Guy Coleman

@GeezaColeman

5 years

The variability in soil type in NW NSW (near Bellata) is fascinating. Demonstrates why precision agriculture is so useful for managing variability. #WorldSoilDay

2

12

51

Guy Coleman

@GeezaColeman

3 years

Images are everything in #deeplearning ! E.g. #ImageNet has >14 M images in 20k classes. Nothing of the same scale exists for weeds ( @WeedAI_news is trying!) but there are open datasets. For weed recognition, here's a 🧵of all weeds datasets I've found. 📸🌱🧵

3

11

46

Guy Coleman

@GeezaColeman

11 months

At least 15 different commercial spot spray systems were on show at #Agritechnica2023 . Well up from 5 prototypes in 2019. Check out the summary thread below

Guy Coleman

@GeezaColeman

11 months

From just a couple of spot-spray systems at Agritechnica 2019 to

7

12

80

3

9

47

Guy Coleman

@GeezaColeman

2 years

Introducing the web-based Coverage Mapping Tool! A colour-based method for calculating % coverage of two-classes in images. 1. Go to: 2. Upload images 3. Set thresholds 4. Check images 5. Save stats/download CSV. Built with ChatGPT/streamlit.

Guy Coleman

@GeezaColeman

2 years

As someone who has never used tkinter before, #ChatGPT let me build a basic Python 'app' for a niche problem in about 3 hours. It makes lots of errors, but the efficiency gained is huge. Full code to use this (for any sort of colour-based analysis):

5

3

56

3

7

49

Guy Coleman

@GeezaColeman

9 months

Raspberry Pi AI weed control sandwich. OWL board on top, @PineberryPi AI HAT with Coral Dual TPU underneath and global shutter camera. Missed the memo that RPi 5 has different size camera cable.

6

5

49

Guy Coleman

@GeezaColeman

5 years

Saturdays are for data collection @pbinarrabri @Sydney_Uni @Sydney_Science

4

7

49

Guy Coleman

@GeezaColeman

3 years

The #OpenWeedLocator is almost here! Entirely opensource software, hardware for community-driven, site-specific weed detection and control. Build your own green-on-brown weed detector from all cheap/simple/off-the-shelf parts. Stay tuned for the release in the next week!

0

5

48

Guy Coleman

@GeezaColeman

1 month

Far too long since my last kanelsnegl og rugbrød 🇩🇰 Very much looking forward to the next 3.5 years as a postdoc with @KU_PLEN in Denmark working on the OpenWeedLocator and adaptation of weeds to image-based detection. Plus getting back to learning Danish again.

4

0

48

Guy Coleman

@GeezaColeman

6 months

DIY photobooth for the next gen OWL. Updated repository should be out this week! All new enclosure (3D printable version too) and improved software.

2

48

Guy Coleman

@GeezaColeman

5 months

I think the accessibility of these high performing algorithms just reinforces why 'green on green' tech should never be hidden behind million dollar projects. It's accessible to everyone, and support should be provided to assist that.

Guy Coleman

@GeezaColeman

5 months

Found a local stash of blue lupins on the afternoon walk. 34 images annotated before dinner (27 used for training). Quite overfitted (more data needed). Still, pretty cool YOLOv8 result:

4

5

66

3

6

47

Guy Coleman

@GeezaColeman

3 years

The #OpenWeedLocator is now out! All the code/instructions/results available below. Massive thanks to @williamtsalter and Michael for helping get this done. Looking forward to seeing some completed units!

Precision Weed Control Lab

@WeedControlLab

3 years

The software, hardware, guides & supporting preprint for the OpenWeedLocator (OWL) are now available. OWL is an entirely open-source, low cost, image-based green-on brown weed detection device run on the @Raspberry_Pi . GitHub: @SiaSydney @Sydney_Science

4

23

111

4

11

47

Guy Coleman

@GeezaColeman

1 year

New preprint on the OWL is up! With honours student Angus Macintyre, we ( @williamtsalter ) looked at how the OWL performed with 4 cameras, on oats/radish 'weeds' at speeds up to 30 km/h. Arducam found 95.7% of weeds @ 5kmh, 85.7% @ 30kmh. @SiaSydney

2

15

46

Guy Coleman

@GeezaColeman

4 years

A factory fitted camera spot spraying system for fallow spraying (not green on brown sensor based) just launched by @JohnDeere Claims of 77% reduction over blanket application from testing on ~ 30,000 ha. Cameras leave the door open for in-crop use.

9

3

46

Guy Coleman

@GeezaColeman

6 months

3D printable enclosure for RPi 5 + camera on the way. Aiming for quite waterproof with a range of plug options on the back/underside.

Guy Coleman

@GeezaColeman

6 months

Exciting times - new OWL enclosures arrived. Rough draft of the picamera2/Raspberry Pi 5 version running now too. Will merge it once tested/properly written up. Give it a whirl here:

5

48

5

2

44

Guy Coleman

@GeezaColeman

2 years

A good day out in the field helping @SiaSydney honours student Angus compare #OpenWeedLocator cameras at different speeds - 5-30kmh. New settings seem to go alright at 30 kmh! @williamtsalter

3

44

Guy Coleman

@GeezaColeman

2 months

After quite a few iterations, finished the new OWL controller for small (< 4 camera) systems. Toggle spot/blanket spraying, data recording, and sensitivity. Status light indicates errors/weed detections/data recording.

1

4

43

Guy Coleman

@GeezaColeman

11 months

If I had $1M to develop effective weed recognition, I'd invest it entirely in large scale, open source image and associated ag context data collection. With the abundant evidence for data importance, still boggles my mind the lack of interest in funding large scale programs.

andi (e/alb)

@Nexuist

11 months

interesting post from an OpenAI employee claiming that all large language models reach the same endpoint regardless of training strategy or clever tricks this is of course what the bitter lesson teaches us but useful to get an up to date confirmation that it still holds true

207

841

6K

4

9

44

Guy Coleman

@GeezaColeman

5 years

And so the realities of #machinelearning begin. Annotating the ginger dataset for instance segmentation. The tablet sure does make it easier though. @AgriFuturesAU @Sydney_Science

2

5

44

Guy Coleman

@GeezaColeman

10 months

New year, new (upgraded) OWL in the works.

0

1

44

Guy Coleman

@GeezaColeman

3 years

Very glad I could finally see the impressive high speed field camera for weed recognition by Mads and Søren at Aarhus University. Super clear image collection at 50kmh (!) in all conditions

2

4

43

Guy Coleman

@GeezaColeman

1 year

ChatGPT4-Vision is wild - correctly made the link between glyphosate - surviving weeds and the patch of green in the bottom corner. Photo from Argentina with @VientoSurAgro and the crew

9

6

43

Guy Coleman

@GeezaColeman

4 years

Dad has been using in field mulching for fallow weed control and increased organic matter for some time. He reckons having a thick mat of OM keeps moisture around well into December (in Esperance, WA). No sand blowing either.

3

43

Guy Coleman

@GeezaColeman

5 years

As the saying goes: if we had weeds for faces, weed detection would have been done/mastered years ago. I spoke with @theGRDC recently about weeds, lasers, face recognition and how this is the future of weed management. @Sydney_Science @AgInstituteAus

Novel technologies applied to weed management

On this podcast we speak with Guy Coleman from Sydney University on the practical advancements in the field of robotics and discover that making face recognition software applicable to weeds is one of

grdc.com.au

6

8

42

Guy Coleman

@GeezaColeman

3 years

A substantial change of scenery for the rest of the year, finally focusing on the PhD and working with @MBagavathiannan 's group at @TAMU on palmer/ryegrass ID in cotton/wheat thanks to @AustAmFulbright ! Field trials going in and data collection kicking off this week! @SiaSydney

2

3

42

Guy Coleman

@GeezaColeman

1 year

In-crop plant growth stage detection - how feasible is it? Read more about it here in our new preprint:

2

10

41

Guy Coleman

@GeezaColeman

6 months

From back when I had a full head of hair! My full presentation on open source development in ag from @evokeAG . Public funds, public recipes.

Future Young Leader Presentation - Guy Coleman

Hear from Guy Coleman, one of our five emerging young leaders with a passion for Australian agriculture and its value chain.Anzac biscuits and transforming a...

www.youtube.com

3

6

41

Guy Coleman

@GeezaColeman

2 months

Piecing together 20 years of herbicide resistance work by Paul Neve: "Reducing reliance on herbicides the only viable option for future weed management"

3

41

Guy Coleman

@GeezaColeman

2 years

How it started 🤝 how it went A fantastic few days in Geraldton/Mingenew region @MingenewExpo with the #OpenWeedLocator & catching up with @eyres_N @nick_mckenna1 ! Some great feedback on OWL design/durability/scale.

4

1

40

Guy Coleman

@GeezaColeman

5 years

Roughly 15 drones blanket spraying a cotton field in China. An incredible sight - is it possible in #ausag ?

fraserzhang（Sunagri）

@fraserzhang1

5 years

Cotton was sprayed with defoliant to make it easier for tractors to harvest mechanically

12

62

167

8

13

41

Guy Coleman

@GeezaColeman

5 years

Hammering out the last bits of code before @YouthAgSummit in just one week! @SiaSydney @Sydney_Science

1

2

41

Guy Coleman

@GeezaColeman

11 months

Alternative weed control at #Agritechnica Besides vision-guided tillage, there was a surprisingly small group of non-chemical weed control options. A short summary

2

7

39

Guy Coleman

@GeezaColeman

1 month

Trained on 1011 images of blue lupins from the suburbs, the model does an alright job finding them in a paddock. Images collected with an S21, test video from a 2018 iPhone XS. Some generalisability. Variable performance between paddock/growth stage - very poor in young crops.

3

5

40

Guy Coleman

@GeezaColeman

2 years

Just finished assembling the compact OWL or OWLet, after some great feedback during the @MingenewExpo . Fits inside 125 x 75 x 3mm RHS steel for smash protection, same features as the big OWL. Designs/assembly guide to follow!

2

5

40

Guy Coleman

@GeezaColeman

1 year

Had the opportunity to meet with the @deepagroco team in Argentina and see their SprAI system in action for fallow weed detection. Inspired by @nozzle_guy , here's a thread on the system.

2

8

39

Guy Coleman

@GeezaColeman

2 years

Hot off the press! #OpenWeedLocator driver boards going to make everything a lot easier to assemble. The HATs sit on top of the Pi and: - drive 4 solenoids (stackable too) - GPIO or serial drive - 12V in to power the Pi/board (no more separate converter!) Designs to come.

1

2

37

Guy Coleman

@GeezaColeman

5 months

Turns out @theGRDC are investing $5 million to develop a closed, private annotated image database of Australian weeds. So short sighted.

GRDC-funded project puts green on green on horizon - Grain Central

A project to develop green-on-green camera spraying for use in Australia is under way to give growers an automated means of controlling weeds in direct-drilled winter crops...Read More

www.graincentral.com

9

0

37