Re: [scikit-image] Techniques for Aligning images to GIS data
I don’t know your status of knowledge, so I apologize if I state the obvious. Your issue is that of the co-registration of images. You have to always decide what your “prime” or “truth” is. How was your “GIS” data precisely located? How do you know it’s not that which is off? (Even so, if you have “ground truth” measurements, they are usually more precisely located than remote sensing data. Are the satellite images “map-projected” ? If so, against what ground truth was that projection performed? What geographical coordinate system of Earth was used for the map projection? This stackexchange might help. There are a bazillion books out there for that, don’t really have a recommendation, mostly learned my stuff by internet searches. ;) HTH, Michael
On Jun 30, 2017, at 09:49, Vighnesh Birodkar <vighneshbirodkar@gmail.com> wrote:
Hello
Has anyone here worked with satellite images before ? I am dealing with the problem of aligning satellite images to GIS data which can be off by upto 15pixels. Could someone point me to good literature to read on the topic ?
Thanks Vighnesh _______________________________________________ scikit-image mailing list scikit-image@python.org https://mail.python.org/mailman/listinfo/scikit-image
Errm, forgot the link: https://gis.stackexchange.com/questions/664/whats-the-difference-between-a-p... <https://gis.stackexchange.com/questions/664/whats-the-difference-between-a-p...>
On Jun 30, 2017, at 10:03, K.-Michael Aye <kmichael.aye@gmail.com> wrote:
I don’t know your status of knowledge, so I apologize if I state the obvious.
Your issue is that of the co-registration of images.
You have to always decide what your “prime” or “truth” is. How was your “GIS” data precisely located? How do you know it’s not that which is off? (Even so, if you have “ground truth” measurements, they are usually more precisely located than remote sensing data.
Are the satellite images “map-projected” ? If so, against what ground truth was that projection performed? What geographical coordinate system of Earth was used for the map projection?
This stackexchange might help.
There are a bazillion books out there for that, don’t really have a recommendation, mostly learned my stuff by internet searches. ;)
HTH, Michael
On Jun 30, 2017, at 09:49, Vighnesh Birodkar <vighneshbirodkar@gmail.com> wrote:
Hello
Has anyone here worked with satellite images before ? I am dealing with the problem of aligning satellite images to GIS data which can be off by upto 15pixels. Could someone point me to good literature to read on the topic ?
Thanks Vighnesh _______________________________________________ scikit-image mailing list scikit-image@python.org https://mail.python.org/mailman/listinfo/scikit-image
Hi Vighnesh, There was a talk by Kat Scott from Planet at PyCon 2017. It’s great and comes with a bunch of nice notebooks. I suspect it will be useful. Juan. On 1 Jul 2017, 2:16 AM +1000, K.-Michael Aye <kmichael.aye@gmail.com>, wrote:
I don’t know your status of knowledge, so I apologize if I state the obvious.
Your issue is that of the co-registration of images.
You have to always decide what your “prime” or “truth” is. How was your “GIS” data precisely located? How do you know it’s not that which is off? (Even so, if you have “ground truth” measurements, they are usually more precisely located than remote sensing data.
Are the satellite images “map-projected” ? If so, against what ground truth was that projection performed? What geographical coordinate system of Earth was used for the map projection?
This stackexchange might help.
There are a bazillion books out there for that, don’t really have a recommendation, mostly learned my stuff by internet searches. ;)
HTH, Michael
On Jun 30, 2017, at 09:49, Vighnesh Birodkar <vighneshbirodkar@gmail.com> wrote:
Hello
Has anyone here worked with satellite images before ? I am dealing with the problem of aligning satellite images to GIS data which can be off by upto 15pixels. Could someone point me to good literature to read on the topic ?
Thanks Vighnesh _______________________________________________ scikit-image mailing list scikit-image@python.org https://mail.python.org/mailman/listinfo/scikit-image
_______________________________________________ scikit-image mailing list scikit-image@python.org https://mail.python.org/mailman/listinfo/scikit-image
Hello Answering Michael's questions The images I have are already ortho rectified. I don't want to co register 2 images. I want to register an image with some GIS data (like Open Street Maps). So in that sense it is the problem of registering an image with a vector of features. Thanks for the pointer to the talk Juan. Thanks Vighnesh On Sat, Jul 1, 2017 at 3:07 AM, Juan Nunez-Iglesias <jni.soma@gmail.com> wrote:
Hi Vighnesh,
There was a talk by Kat Scott from Planet at PyCon 2017. It’s great and comes with a bunch of nice notebooks. I suspect it will be useful.
Juan.
On 1 Jul 2017, 2:16 AM +1000, K.-Michael Aye <kmichael.aye@gmail.com>, wrote:
I don’t know your status of knowledge, so I apologize if I state the obvious.
Your issue is that of the co-registration of images.
You have to always decide what your “prime” or “truth” is. How was your “GIS” data precisely located? How do you know it’s not that which is off? (Even so, if you have “ground truth” measurements, they are usually more precisely located than remote sensing data.
Are the satellite images “map-projected” ? If so, against what ground truth was that projection performed? What geographical coordinate system of Earth was used for the map projection?
This stackexchange might help.
There are a bazillion books out there for that, don’t really have a recommendation, mostly learned my stuff by internet searches. ;)
HTH, Michael
On Jun 30, 2017, at 09:49, Vighnesh Birodkar <vighneshbirodkar@gmail.com> wrote:
Hello
Has anyone here worked with satellite images before ? I am dealing with the problem of aligning satellite images to GIS data which can be off by upto 15pixels. Could someone point me to good literature to read on the topic ?
Thanks Vighnesh _______________________________________________ scikit-image mailing list scikit-image@python.org https://mail.python.org/mailman/listinfo/scikit-image
_______________________________________________ scikit-image mailing list scikit-image@python.org https://mail.python.org/mailman/listinfo/scikit-image
_______________________________________________ scikit-image mailing list scikit-image@python.org https://mail.python.org/mailman/listinfo/scikit-image
participants (3)
-
Juan Nunez-Iglesias -
K.-Michael Aye -
Vighnesh Birodkar