Shadow detection and removal is an important task when dealing with colour outdoor images. Shadows are generated by a local and relative absence of light. Shadows are, first of all, a local decrease in the amount of light that reaches a surface.

binary hypothesis test solution

。该法根据所研 究的问题构造检验统计量，并利用手头样本，按排列组合的原理导出检验统计量的理论抽样分布； 若难以导出确切的理论分布，则采用抽样模拟的方法估计其近似分布，然后求出从该分布中获得 手头样本及更极端样本的概率(P值)，并界定此概率值，作出推论。-It is sample．based distribution-free method，which makes use of“permutation or combination”to get the theo． retical

Robust version of the linearity test against a Logistic STAR specification. The test is based on the third-order Taylor series expansion of the logistic function arounf the null hypothesis.