Geometric Distortion Test

From Tauwiki

Simulation file containing several sources act like a grid was created and image created by running it through the pipeline. Comparison made between coefficients by Elhanan (sixth order polynomial) and simulation program, which is third order polynomial (presently used by pipeline: UVS_Pipeline_distcoeft.txt in params folder).

The images have been pasted here. By using Elhanan's coefts we get the frame that is distorted near top right and bottom right. But this is unchanged using other set of coefts. The difference is important since the correct values are to be incorporated in the software.

The coefts and polynomials have been given here for convenience.

Uncorrected frame:

Corrected frame using sim cfts:

Corrected frame using Elhanan's cfts:

TODO: Get correct coefts, and test whether implimentation is right after using it.