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First, let me say that I am new to this field. I have an existing image/video viewing application. My primary goal is to implement an efficient method to determine the latitude and longitude of any pixel in an image or video frame. I know the latitude and longitude of the four corners and the center of the image/frame. I also know the projection system that the coordinates are based in.

The images in question are not maps. They are areal photographs. I cannot make assumptions about the viewing angle or anything like that.

I'm not looking to use any existing application or tool. I need to implement the necessary functionality in my own application. I am open to using a third party library if that's the best way, but my application is proprietary. So licensing is a concern.

I've been looking into this for a while now. I've read up on world files and using them for rectification. But I don't know how to create one for my image. It seems like the tutorials that I have seen make assumptions for simplicity sake that I cannot make.

I'm basically looking for a description of the necessary math to perform the required analysis and/or a good library I could use that is compatible with proprietary software. My existing application is written in c++ and c#.

I apologize if any of terminology is incorrect. Any advice would be appreciated.

It seems to me that your Images are ALREADY georeferenced given that you already know the coordinates of your corner pixels. –  nickves Dec 6 '12 at 0:19
Unless you do not have access to ArcGIS, it is the right tool for the job. Having said that, there a plethora of open source GIS (like QGIS) which will also provide the required functionality. Writing a C++/C# code to georeference would be a bit of too much unnecessary hard work and re-inventing the wheel, when the objective is to have the image georeferenced. Use the following link to georeference in ArcMap: help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//… –  ujjwalesri Dec 6 '12 at 2:37
use gdal_translate with argument a_ullr for "assign upper left, lower right. –  mdsumner Dec 6 '12 at 10:23

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