Georeferencing a Googlemap map with Arcmap
Before I had spent a few posts, talking about georeferencing images or maps using manifolds, Autocad y Microstation.
To complete the cycle, doing it with ArcGIS, I found an article by Adriano, who shows us the sequence step by step.
This is the view in Google maps, in map condition.
To see the orthophoto, activate the "satellite" option
Then this image is copied via “printscreen”, and the borders are removed, so that the zoom and view configuration tools are not visible. (in the other posts it is shown how to do it if what you have are utm coordinates or control points)
Then it is inserted in Arcmap, through the "ad data" option, it is presumed that we have a feature class, with the street axes of the same area. Since when entering the image we don't know where it is, you right-click on it and choose “zoom to layer”, so it is available on your screen.
We activate the “georeferencing” option through view/toolbars/georeferencing. To bring it close to the map or the control points you can add one to it, with a point of origin and destination visible on your screen, this will make it possible to see it when you activate the “link table” option, leave the “source” the same and add it to the destination point known as “map” one of your known points, so the image will be close to the area of interest.
Once both the image and the street layer are visible, the control points are defined; for this you only click on the point (interpreted) of the image and another click on the known point of the map.
These can be in a txt file, and entered using the "load" button, but for this you must have them in a format separated by spaces in the form "point number" "origin longitude" "origin latitude" "destination longitude" destination latitude".
In the "view link table" button you can see each of the control points, according to the data you have, you can add enough so that the image is deformed as close as possible to the street shape.
After the image acquires the transformations, “georeferencing / update georeferencing” is applied.
The ideal is to export it to a format that retains the georeference, for that right mouse button is done, on the image, then data / export data and the format is chosen, which can be img, tiff or as grid ... even in mosaic.
Here you can see the complete post (in Portuguese)
helloaa… I am interested in this subject of georeferencing .. but I would like you to do it with google earth .. please and with argis 9.2… once I saw a mosaic of images that had been georeferences .. all were from google earth .. thanks for everything ... !!!
How do I do for saver where these courses are taught?
It's a great site, I hope to collaborate when I can, keep going
From there you can change the width and height, which I put are examples, always those measurements are in pixels
you also change the file url
The video should be saved in a certain place on the web, such that you have the url file address. Then insert it inside a simple html code to embed video like:
the video is personal and I want to show it only some colleagues
I want to know how I can add a video to a pocision brand
Hello, could anyone tell me how I solved georeferencing? because I have tried and did not add the image, the rest of the steps are not very clear, in addition in the fourth image appears a toolbar that apparently is used and I do not know what it is.
HELLO, WHAT A PLEASURE TO BOTHER YOU SO, BUT THE TRUTH MEETS A LOT OF GEOREFERENCING AN IMAGE.
YOU MAY PLEASE EXPLAIN THIS SECTION TO ME WITH MORE DETAIL. THANK YOU
” To bring it near the map or the control points you can add one, with a point of origin and destination visible on your screen, this will make it possible to see it when you activate the “link table” option, leave the “source” the same and add it to the destination point known as “map” one of your known points, so the image will be close to the area of interest.”
You do the print screen, then paste it in Mspaint, there you cut out what you do not occupy and save it as jpg on your hard drive.
Then you call it from Arcmap, with the same “add data” button as you are going to call a shape, and you choose the image where you saved it.
you could explain to me the step after doing the printscreen, where I save the image and how much to the arcmap?
it is in “view/toolbars/georeferencing”
try to follow the steps and do not, the georeferencing window does not appear with the options enabled
Well, I give myself, I have not tried it either
Now that you talk about exporting and mention the GRID, IMG or TIFF format options…. How can I export to ECW with the Ermapper plugin installed?
I'm not an Arcgis user, but the other day I was asked that question and I did not know how to do it. Frankly, Arcgis' way of working seems completely contrary to usability.