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How can I convert known GPS coordinates to image pixels, and again image pixels to world GPS coordinates?

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MOHIT
MOHIT on 12 Dec 2016
Answered: Ahmet Cecen on 12 Dec 2016
I have few known points in an image and same points I have as GPS coordinates also. How can I georeference my image to get all points in the image as GPS points?

Answers (1)

Ahmet Cecen
Ahmet Cecen on 12 Dec 2016
A simple start would be to get any two points:
dx = abs(point2gpsx - point1gpsx)/abs(point2imagex - point1imagex)
So by using a simple ratio, find how long a single pixel is in the x direction in GPS coordinates. Repeat for y direction. Then you can calculate the edges of the image in GPS coordinates, then use a meshgrid to get the coordinates for the rest.

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