Area No. 1 from Table 1 as velocity field overlaid with corks (blue), both from LCT methods applied on Dopplergrams in the interval from 7 UT to 10 UT on August 23, 2000, and filaments from KSO Hα observed at 8:23 UT. The blue corks gather at areas with high convergence of the velocity field. The scaling vector of the velocity field is shown in the lower-left corner. In the upper-right corner a circle with a cross shows the size of the convolution window for the LCT method (i.e., the LCT resolution). The small rings near the filaments indicate the locations of the barbs.