[CCV] Added oriented and laplacian pyramid

Signed-off-by: Jim Martens <github@2martens.de>

ccv/saliency/includes/laplacian_pyramid.h

@@ -0,0 +1,33 @@
+#ifndef SHEET5_LAPLACIAN_PYRAMID_H
+#define SHEET5_LAPLACIAN_PYRAMID_H
+
+#include <opencv2/opencv.hpp>
+#include "gauss_pyramid.h"
+
+class laplacian_pyramid {
+private:
+    std::vector<cv::Mat> _layers;
+public:
+    /**
+     * Initializes the laplacian pyramid.
+     * @param pyramid the gaussian pyramid
+     * @param sigma the blur factor
+     */
+    laplacian_pyramid(const gauss_pyramid& pyramid, float sigma);
+
+    /**
+     * Returns the number of layers.
+     * @return
+     */
+    unsigned long get_number_of_layers() const;
+
+    /**
+     * Returns the pyramid element at given layer.
+     * @param layer the requested pyramid layer
+     * @return pyramid layer
+     */
+    cv::Mat get(int layer) const;
+};
+
+
+#endif //SHEET5_LAPLACIAN_PYRAMID_H