He said that estimates have shown the United States loses $5.5 billion each year in worker income because of motion picture counterfeiting.
But estimates have been rising.
Unofficial estimates have been made.
The impact of polar motion on the accuracy of UT1-UTC estimates has been previously investigated in Nothnagel and Schnell (2008), where it was shown that offsets in polar motion have a directly proportional effect on the UT1-UTC estimates.
The lack of local estimates has the consequence that in these regions motion bleeding can appear.
However, in the occluded areas, estimated motion vectors have values which are inconsistent with the best motion vectors in their neighbourhood.
Given that most current structure from motion (SFM) algorithms cannot recover true motion estimates reliably, it is important to understand the impact such motion errors have on the shape reconstruction.
To have a more independent reference, we also compared our polar motion estimates to the GNSS estimates provided by the IGS (Dow et al. 2009).
It is true that the front-end nonlinearity had the largest effect of any nonlinearity in improving natural motion estimates.
Ice area flux estimates provided in Fig. 1c are calculated using CERSAT motion estimates together with CERSAT ice concentration information.
