[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

ccv/saliency/includes/oriented_pyramid.h

@@ -0,0 +1,57 @@
+#ifndef SHEET5_ORIENTED_PYRAMID_H
+#define SHEET5_ORIENTED_PYRAMID_H
+
+#include <opencv2/opencv.hpp>
+#include "laplacian_pyramid.h"
+
+class oriented_pyramid {
+private:
+    std::vector<std::vector<cv::Mat>> _orientation_maps;
+    std::vector<cv::Mat> _gabor_filters;
+    std::vector<cv::Mat> _feature_maps;
+    cv::Mat _C;
+
+    /**
+     * Initializes the Gabor filters.
+     * @param num_orientations the number of orientations to use
+     */
+    void initialize_gabor_filters(float num_orientations);
+public:
+    /**
+     * Initializes the oriented pyramid.
+     * @param pyramid the laplacian pyramid
+     * @param num_orientations the number of Gabor filters to apply
+     */
+    oriented_pyramid(const laplacian_pyramid& pyramid, int num_orientations);
+
+    /**
+     * Computes the feature maps.
+     */
+    void compute_feature_maps();
+
+    /**
+     * Computes the conspicuity map.
+     */
+    void compute_conspicuity_map();
+
+    /**
+     * Returns the conspicuity map.
+     * Has to be called after compute_conspicuity_map.
+     *
+     * @return conspicuity map
+     */
+    cv::Mat get_conspicuity_map();
+
+    /**
+     * Returns the feature map for the nth orientation.
+     *
+     * compute_feature_maps must be called first.
+     *
+     * @param orientation the nth orientation
+     * @return the feature map
+     */
+    cv::Mat get_feature_map(int orientation);
+};
+
+
+#endif //SHEET5_ORIENTED_PYRAMID_H