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The purpose of the shapefile is to select some polygons and tag
them with class labels, so that the application knows where to
pick pixels to train itself. If you want a shapefile of the whole
image footprint, you can use the output of ImageEnvelope
application.
About projections, maybe have a look at tools such as gdalinfo
and ogrinfo
they are great to have relevant
information on images and shapefiles. If you want a reference
about projections, you can check http://epsg.io/
Regards,
Guillaume
On 12/20/18 5:51 PM, bogdanul2003
wrote:
Hi,
I've tried different shapefiles with dimensions rangeing
from a small part of the image to the entire image. I'm
actually interested to consider the entire image as one class
so I'm actually interested in a shapefile with 100x100
dimension which is the actual size of the image.
1. Is there a posibility to consider the entire image
without using shapefiles ? In other words, can the framework
be used without considering geospatial information, which in
my case is irelevant ?
2. I'm a noob using tif files and shapefiles so for me the
projections concept is unknown. I've attached all the files
generated when I created the shapefile with QGIS. Can you
please point me to a projections for dummies tutorial with
QGIS ?
On Wednesday, December 19, 2018 at 6:03:19 PM UTC+1, Guillaume
Pasero wrote:
Hi,
Have you checked that your shapefile and image properly
overlap ?
Your image doesn't have any projection. Does your shapefile
has one ?
Regards,
Guillaume
Quoting bogdanul2003 <[email protected]>:
> Hi,
>
> I'm trying to run this app with one tif image and one
shape file (I
> attached both) but I get the fallowing error "No samples
found in the
> inputs!". This is not happening if I use the examples in
the Classification
> folder. I'm new to this framework and kind of stuck and
don't know what is
> causing this, I tried to look in the source code and
can't figure out why
> noSamples is never set to false. I generated the
shapefile using QGIS and
> also I'm interested in the single class SVM
classification.
>
> Thank you,
> Bogdan
>
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Guillaume PASERO
Responsable technique
Business Unit ESPACE & GeoInformation -
Département Payload Data & Applications
CS Systèmes d'Information
Parc de la Grande Plaine - 5, Rue Brindejonc des
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