It can be extended by using a threshold value.
A complete CSSN is derived using a threshold value of 300 and having 68 STs.
Using a threshold value of 4.97 for the second most tortuous quadrant, ROPtool's sensitivity was 91% and its specificity was 82%.
The decision can either be made via hypothesis testing using a threshold value or by choosing the location at which the maximum value of occurs.
Therefore, we proposed an algorithm based on computing similarity between two documents and decision, which one will appertain to the domain and one which will not, using a threshold value calculated automatically on a development data set.
The row with a threshold value of 300 is shaded to emphasize that the results reported in this study refer to a CSSN derived using a threshold value of 300.
DWS is activated automatically near to the buried object using a threshold value (TA) and deactivated using the secondary peak location of e(m), which is explained in the following sections.
Using a threshold value of 20.55, estimated as half of the difference between the maximum and minimum Bouger anomaly values, the 5-pixel-long lineaments, and longer ones, are automatically determined in the accumulator matrix.
In addition, the following variables were calculated by sample plots: the laser pulse intensities accumulating in percentiles (i 10, i 30,…, i 90), the average intensity value of above-ground hits, the proportion of ground hits versus canopy hits using a threshold value of 0.1 m (veg), and the average height (h mean) and standard deviation of the above-ground hits (h sd).
Maltamo et al. (2011) used the LiDAR metrics VEG (the proportion of ground echoes vs canopy echoes using a threshold value of 2 m) and H90 (plot level 90 percentile for height based on first returns) as a basis for plot selection.
The difference between neighbouring values g p and the centre pixel value g c are encoded with three values using a threshold value t: begin{array}rcl@ s_{3}(g_{p},;g_{c},;t)= left{ begin{array}{rl} 1, &; g_{p} geq g_{c} + t 0, &; g_{c} - t leq g_{p} < g_{c} + t -1, &; text{otherwise} end{array} right.. end{array} (5).
