Class Summary Class Description OrientationAverage<D extends ImageGray<D>>Computes the orientation of a region by summing up the derivative along each axis independently then computing the direction fom the sum. OrientationHistogram<D extends ImageGray<D>>Estimates the orientation by creating a histogram of discrete angles around the entire circle. OrientationHistogramSift<Deriv extends ImageGray>Computes the orientation of a region around a point in scale-space as specified in the SIFT  paper. OrientationImageAverage<T extends ImageGray<T>>Computes the orientation of a region by computing a weighted sum of each pixel's intensity using their respective sine and cosine values. OrientationIntegralBase<II extends ImageGray<II>,G extends GradientValue>Common base class for integral image region orientation algorithms. OrientationSlidingWindow<D extends ImageGray<D>>Estimates the orientation by sliding window across all angles.