MATLAB: Lsqnonlin for double summation cost function

Question

Hello,

I would like to use lsqnonlin to solve the Bundle Adjustment Problem. As you can see the objective function for this problem is defined using a double summation. It it possible to use lsqnonlin to express this type of problem? It seems as though it can only optimize over a single set of residuals instead of a sum (or double sum) of them.

Thanks!

Answer 1

No, your objective function is allowed to return a residual array of any dimension.

https://www.mathworks.com/help/optim/ug/lsqnonlin.html#buuhch7-fun