-------- Original Message --------
Subject: Tender for an Agriculture Inventory & Landuse Mapping Plugin
Date: Wed, 5 Jan 2011 03:16:35 +0100
From: Aravena, Ricardo GIZ LA <[email protected]>
To: [email protected] <[email protected]>
CC:
Dear developers,
Please find below a detailed Request for a Proposal and Quotation for an
AILUM (Agriculture Inventory and Land Use Mapping) plug-in for QGIS.
The tender is being announced by GTZ (German Technical Cooperation).
Note that the deadline for submission is the 04-Feb-2011, and the award
date is 15-Feb-2011.
Please feel free to contact Ricardo Aravena ([email protected]
<mailto:[email protected]>) if you have any questions regards the
technical specification and the tendering/bidding process.
*Organizational Overview *
The Deutsche Gesellschaft für Technische Zusammenarbeit (German Society
for Technical Cooperation) or GTZ is a private international enterprise
owned by the German Federal Government, specializing in technical
cooperation for sustainable development with worldwide operation. It
primarily works for public sector organizations and is headquartered in
Eschborn, Germany. It mainly operates on behalf of the Federal Ministry
for Economic Cooperation and Development (BMZ). Further clients are
other departments of the government, international donors like the
European Union, World Bank or the United Nations, partner countries and
the private sector. GTZ works on a public-benefit basis. All surpluses
generated are channeled back into its own international cooperation
projects for sustainable development. The GTZ provides services in the
following areas of sustainable development: Economic Development and
Employment; Government, Democracy and Poverty Reduction; Education,
Health and Social Security; Environment and Infrastructure &
Agriculture, Fisheries and Food.
*Required Deliverables*
A QGIS plugin for an automated process to manually classify land types
from satellite imagery for land use mapping based on visual identification.
*Function*
To avoid high-level academic training of remote sensing classification
techniques, an easy, yet robust method of classifying land types simply
by clicking on them from visual identification as a non-expert would
from a common application like GIMP is required. The idea is that
non-experts would be able to conduct their own land use mapping. The
areas from the resultant vector land use maps produced would be further
applied to calculate indicators such as expected crop yield.
*Target Users *
The tool is principally intended for an agricultural inventory project
to be conducted by provincial staff from the northern Laotian province
of Luang Namtha, though it would also be useful for some Participatory
Land Use Planning and other mapping activities across other provinces in
Laos. Thus it needs to be as simple and automated as possible.
As it is intended to be an Open Source tool under GNU (general public
use) license, it could also potentially be used by anyone with an
internet connection and QGIS. It would serve well in the development
context where funding, expert knowledge and training is limited.
*Technical Specification*
A Python plugin is to be coded for QGIS as either a new Menu tool set,
Panel or Toolbar.
The plugin will have 3 parts:
1. Imagery preparation -- this will automate 4 steps:
(i) conversion of images to 8 bit Geotif (if necessary),
(ii) creation of a georeferencing tag file (.gtf),
(iii) Equalization,
(iv) then Blur.
The user will simply be asked where to store the new files for the image
and then the steps will be run in sequence automatically.
2. Classification --
a) Visual classifications of distinct, contiguous recognizable land
types are to be conducted on the standard QGIS map interface the same
way it would be done in a program like GIMP with BOTH the 'Fuzzy Select
Tool' and the 'Select by Color Tool'. The users will apply these tools
on a trial-and-error basis with similar dynamic 'Threshold' slide bars
as in GIMP's interface until they are satisfied with their selections.
b) A third tool would also be necessary to group or generalize the
user's selections, the way 'Select>Border' would do in GIMP.
c) A dialog should appear on request every time the user is satisfied
with their selection to render the land types with an appropriate colour
and assign a textual label which will be included in a landuse field.
The colours and texts should be editable and not limited in number. This
label and colour information may somehow be embedded in the image or
stored separately in a look up table if necessary so that it can be
rendered accordingly in the resulting end-product vector shapefile.
3. Vectorization -- this will polygonize the classified image as
contiguously as possible to a shapefile. And the landuse and a colour
fields generated in the precious step will need to be either maintained
or associated correspondingly to the shapefile.
It is proposed that:
- The conversion of the imagery to 8 bit Geotif and the creation of a
tag file could be done with GDAL commands.
- The Equalization and Blur need to be produced with the same effect and
quality as that produced by GIMP's Colors>Auto>Equalize and
Filters>Blur>Gaussian Blur respectively; however since GIMP's libraries
can only be run internally from within GIMP, it is proposed to implement
the equivalent functionality from ImageMagick's libraries instead.
- The same goes for the 'Fuzzy Select Tool', 'Select by Color Tool' and
'Select>Border' GIMP equivalents.
- The vectorization could be conducted by the GDAL polygonize function
for example as long as its parameters can be set to produce contiguity
to reduce individual pixelization.
- Step 2b), the most challenging, could be catered for in many ways and
so will be left up to the solution provider's discretion. Use of the
already translated Orfeo Toolbox libraries is encouraged.
This is the proposed construction and presentation for the plugin,
however if applicants present a better workflow or methodology this will
also certainly be considered and in fact favored.
*Assumptions & Agreements *
- The name of the plugin shall be "AILUM (Agriculture Inventory and Land
Use Mapping)".
- The plugin needs to be a completely Open Source solution with no legal
infringements.
- After being tested, the plugin and its code will be publicly available
under GNU license as FLOSS.
*Technical Proposal *
The solution provider should include time-lines and schedules for
completing the project.
*Time-Cost *
The solution provider must detail the time and costs that will be
required to complete the project.
*Additional Documentation*
Developers can direct us to an internet site or repository which
demonstrates their production capabilities.
*References *
References are optional, though preferable if the candidate is not a
company with a published track record.
*Submission Deadline *
4, February, 2011.
*Submit Proposal To: *
Ricardo Aravena
Email: [email protected] <mailto:[email protected]>
*For additional information or clarification, contact: *
Ricardo Aravena
Email: [email protected] <mailto:[email protected]>
*Basis for Award of Contract *
Balance between the best functional solution and the lowest bid.
*Award Date *
15, February, 2011.
Ricardo Aravena
Deutsche Gesellschaft für Technische ZusammenarbeitgtzGmbH**
*/GIS Advisor/*
*/Lao-German Cooperation/*
GTZ- Office Vientiane / Laos
T: ++85621-353605
F: ++85621-312408
M: ++85620-3355096
Ricardo Aravena
Deutsche Gesellschaft für Technische ZusammenarbeitgtzGmbH**
*/GIS Advisor/*
*/Lao-German Cooperation/*
GTZ- Office Vientiane / Laos
T: ++85621-353605
F: ++85621-312408
M: ++85620-3355096
------------------------------------------------------------------------
Deutsche Gesellschaft fuer Internationale Zusammenarbeit (GIZ) GmbH;
Sitz der Gesellschaft Bonn und Eschborn/Registered Office Bonn and
Eschborn; Germany;
Registergericht/Registered at Amtsgericht Frankfurt am Main, Germany;
Eintragungs-Nr./Registration no. HRB 12394;
USt-IdNr./VAT ID no. DE 113891176;
Vorsitzender des Aufsichtsrates/Chairman of the Supervisory Board:
Hans-Juergen Beerfeltz, Staatssekretaer/State Secretary;
Vorstandssprecher/Chairman of the Management Board: Dr. Bernd
Eisenblaetter; Vorstand/Management Board: Dr. Christoph Beier, Adolf
Kloke-Lesch, Tom Paetz, Dr. Sebastian Paust, Dr. Hans-Joachim Preuss,
Dr. Juergen Wilhelm
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