We categorized the cumulative bromine levels into low, medium, and high groups based on histogram distribution data (< 30,000, 30,000 105,000, and > 105,000 ppm).
Any nuclear expression (>1 %; 41 % cases) was considered positive, while cytoplasmic expression was considered positive if it exceeded a cut-off of an H-score of 110, which is based on histogram distribution of the cases as well as X-Tile computer software analysis [ 26] (Table 1).
One approach to investigate heterogeneity is based on histogram analysis of the distribution of pharmacokinetic parameters inside the tumour, which allows to demonstrate a rim core difference in drug effect (Checkley et al, 2003).
Other brightness preserving histogram-based enhancement techniques are based on histogram matching (HM) procedure.
The experimental validation of the model is based on histograms of Tg distributions which were computed from DSC thermograms by using a new model-based optimisation technique.
First-order statistics, based on histogram analysis, include mean intensity, maximum intensity, minimum intensity, uniformity (uniformity of gray-level distribution), entropy (irregularity of gray-level distribution), standard deviation of the gray-level histogram distribution, skewness (asymmetry of the histogram), and kurtosis (flatness of the histogram) (Appendix).
The algorithm presented in [24] is based on histogram modification.
Secondly, a low complexity auto white balance hardware architecture is presented based on histogram equalization algorithm.
Permeability and porosity distributions are varied based on histograms and variograms in a geostatistic modeling process and integrated into a simulator and an optimizer for performing an uncertainty analysis.
Based on histograms (data not shown) both PM2.5 and NO2 appeared to have positively skewed distributions and were therefore log-transformed before modeling.
