public override SubbandAn getAnSubbandTree(int t, int c)
{
if (subbTrees[t][c] == null)
{
subbTrees[t][c] = new SubbandAn(getTileCompWidth(t, c), getTileCompHeight(t, c), getCompULX(c), getCompULY(c), getDecompLevels(t, c), getHorAnWaveletFilters(t, c), getVertAnWaveletFilters(t, c));
initSubbandsFields(t, c, subbTrees[t][c]);
}
return subbTrees[t][c];
}