In the formula, vector [R.sup.xr.sub.r0] consists of data from the state cross-correlation function
To do so, an array y was introduced to store the variance of the cross-correlation function
R on each row:
Based on the elements of a rich dynamics, the internal interaction between the background components occurs in time and space; the cross-correlation function
can be used to produce maps in time and space; time is represented by the lag order, being a normalized parameter that is proportional to time, and the blade number represents space.
The full set of 2048 De Bruijn sequences provides up to 227103 periodic cross-correlation functions
that exhibit a ZCZ of variable length.
The normilized cross-correlation function
is highly recommended for template matching (Briechle, Hanebeck 2001);
The weak cross-correlation function
means that the cross-correlation function
value of two sequences is approximate to zero.
The values range of cross-correlation function
N(i,j) is 0 [less than or equal to] N(i, j) [less than or equal to] 1, and its value is determined by the matching degree of search image region and template image using (i, j) as the pixel at top-left corner.
where: [A.sub.0]--the time-zero-order correlation function; [B.sub.0] and [B.sub.1]--respectively, the moments of zero and first order cross-correlation function
When estimating a cross-correlation function
to the citywide data, the absenteeism time series correlated most strongly with the fever/ influenza syndrome time series at a 2-day lag (pH1N1 period, r = 0.550; entire study period, r = 0.213), indicating that changes in absenteeism were most strongly correlated with changes in fever/influenza syndrome visits 2 days earlier.
For two series [x.sub.t] and [y.sub.t], the cross-correlation function
The degree of inter-limb coupling during performance was assessed by calculating the Cross-Correlation Function
(CCF) between the angular displacement signals of the two lower limbs (Fig.