The implementation of Spectral Saliency algorithm in the opencv extra module (StaticSaliencySpectralResidual::computeSaliencyImpl) does not generate a saliency map similar to that of the implementation specified by Hou in [http://www.klab.caltech.edu/~xhou/papers/cvpr07.pdf]. I have tried generating maps using the same sample image that was used in the paper and got different results.
Comparison - OpenCV vs. Hou implementation https://drive.google.com/file/d/0B9ydFRvSnSo-b3pnV3hXeVh5Qmc/view?usp=sharing