The 2
Download
1 / 25

Site specific weed management: mapping the tempo-spatial development of purple nutsedge ( Cyperus rotundus ) Hanan Eize - PowerPoint PPT Presentation


  • 90 Views
  • Uploaded on

The 2 nd International Conference on: Novel and Sustainable Weed Management in Arid and Semi-Arid Agro-Ecosystems. Site specific weed management: mapping the tempo-spatial development of purple nutsedge ( Cyperus rotundus ) Hanan Eizenberg Tal Naamat, Ran Lati , Tal Miller and Roy Efron

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Site specific weed management: mapping the tempo-spatial development of purple nutsedge ( Cyperus rotundus ) Hanan Eize' - duke


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  • The 2nd International Conference on: Novel and Sustainable Weed Management in Arid and Semi-Arid Agro-Ecosystems

Site specific weed management: mapping the tempo-spatial development of purple nutsedge (Cyperusrotundus)

Hanan Eizenberg

Tal Naamat, Ran Lati, Tal Millerand Roy Efron

Dept. of Weed Research, ARO, NeweYa’ar Research Center, Ramat Yishay 30095, Israel


  • Objective:

  • The main objective of the entire study is to develop a multiple approach for the detection of purple nutsedge spatial development

  • To achieve our objective, the state of art in detection technologies for both above and sub-surface spatial development were used


  • Our approach thus includes:

  • Spectral analysis of purple nutsedge obtained from satellites or airborne

  • Leaf shape analysis obtained from image data

  • photogrammetric (3D) analysis obtained from image data and laser (LIDAR)

  • Modeling spatial sprouting of the weed under different environmental conditions

  • Modeling the soil-subsurface development and its reflectance on purple nutsedge spatial sprouting


Topic

Technology

Modeling spatial growth for the above and sub-surface

RGB high resolution camera; 0.5x0.5 mm pixel size. Lati et al. Minirhyzotronnon destructive video camera. Naamat et al.

RGB high resolution camera; 0.5x0.5 pixel size. 3D LIDAR

scenes and photogrammetric. Lati et al. RGB high resolution camera; 1x1mm pixel size. Efron et al.

Close range remote sensing

Aerial RGB high resolution camera; 50x50mm pixel size.

Tal Miller et al.

Far range remote sensing


Examples 1.

Monitoring the sub-surface development of purple nutsedge using minirhyzotron video camera


13.2.08

9.3.08

23.3.08


Examples 2.

Developing a robust method for purple nutsedge detection under varies light conditions

or

How to overcome the shading effect?


Fig. 1

1-a

1-b

1-c

2-b

2-a

2-c

3-a

3-b

3-c

4-a

4-b

4-c


Biological model

Above soil surface

growth model

Purple nutsedge spatial growth model

Sub surface

growth model


Laser scanner description
Laser Scanner (description)

Color digital camera

Laser Scanner



Ranging - travel time based measurement

Knowledge of the laser beam direction  determination of point in space

Direct measurement of 3D coordinates of the objects in space

Panoramic scan - complete 3D depiction of the surveyed scene can be achieved – generates 3D point clouds

Laser Scanner (principles)


Examples 3 weed mapping using web cam rgb
Examples 3. Weed Mapping using web cam (RGB)



GPS Antenna mega-pixel) RGB

Camera

1

Field Of View

Camera

2

Field Of View

Computer

ECPA - July 2008


14_right_cam.avi mega-pixel) RGB

MOV07482.MPG


Binary image
Binary Image mega-pixel) RGB



Secondary Classified Image mega-pixel) RGB

dGPS Data

Weed Map


Weed Map mega-pixel) RGB

  • Number of weeds per image

  • Area of the weeds


Summary mega-pixel) RGB

Biology

Technology

Remote sensing for purple nutsedge detection

Input of meteorological data (T°C; PAR)

Close range

Terrestrial sensors

RGB, NIR, LIDAR

Far range

aerial sensors

Satellite; airborne

Soil Sub-surface model

Above surface growth sub-model

Developing an algorithm for weed detection – range related

Purple nutsedge

growth model

Fixing data into GIS (using GPS)

Creating a purple nutsedge spatial distribution map

Field history


Taking home massage mega-pixel) RGB

Integration of the biological and technological means for purple nutsedge detection support and complements each other, and may provide a new dimensions in its precision management.

message


  • Thanks mega-pixel) RGB

  • To my students, Tal N., Tal M., Ran, Roy.

  • To my colleagues from the department of Weed Research Yosi, Radi, Dani, Tal L., Guy, Evgeni.

  • To Victor, Yafit and Sagi.

  • To the Chief Scientist from the Ministry of Agriculture for funding the research.


ad