Characterization - First Processes

[DavidCnly]

1 - We need a cosine-weighted area map that corrects pixel area to solar surface area, so we can get the feature areas.
2 - Thresholding and LOS correction (no smoothing needed though).
3 - Extract individual features found during the IGM (Indexed Grown Mask) process.
4 - Get dB/dt by subtracting the magnetograms and then dividing by the time difference.
5 - Using the cosine-weighted area map and the dB/dt map, calculate the flux emergence rate, dΦ/dt, of each feature.

[PaulJWright]