What are the different colored grid points that show up when I run the Lens Profile Creator on my images?
Yellow grid points are the initial corners detected by the Lens Profile Creator. The yellow zigzag dashed line shows the correct ordering of the detected corners. Red grid points indicate grid detection failures that it will remove the image from contributing to the computation of the lens profile. Looking at the red dots and finding where these red dots are missing in the checkerboard can give clues to why the failure occurred. Cyan grid points are drawn as overlays on top of the yellow grid points. The yellow point shows the original detected corner, and the cyan point shows the new location of the corner as predicted by the lens profile. The yellow points and the cyan points should be as close to each other as possible. The closer the points, the better fit of the estimated lens model to the actual data.
