Finish TrainingData::getWk()
Finish TrainingData::generateWAndWInOneColumn()
Finish
TrainingData::generateGradientImages()
Creat class LocalFeature
Finish Class LocalFeature
Rename getMappedXY() to getAlignedXY()
Finish the main parts.
Including class PCAShapeModel, class ActiveShapeModels, class Constant, class LocalFeature.