I have an image taken using a mobile phone like the one attached below. Let's say that I know the location(lat/long/alt) from where this image was taken, which is probably the center of the red circle (lets say pixel x,y), annotated in this image. I want to have any suggestions on how to go about estimating the approximate lat/long/alt coordinates of the annotated traffic signal?
closed as too broad by aldo_tapia, BBG_GIS, whyzar, MaryBeth, Dan C Dec 7 '17 at 17:47
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IF you know the look angle (azimuth) of the photo, you can try to estimate 1) how far away the traffic signal is from the known point - maybe 60 feet - and 2) the height difference of the two points - maybe 15 feet - and then just do the trig.
This is known as a First (direct or forward) geodetic problem and there should be resources out there for that search term.
I imagine it would be easier to convert your data to a projected coordinate space so you can use planar math rather than trying to work with geographic coordinates.