Add ShuffleChannel layer

modules/dnn/include/opencv2/dnn/all_layers.hpp

@@ -361,6 +361,23 @@ CV__DNN_EXPERIMENTAL_NS_BEGIN
         static Ptr<PermuteLayer> create(const LayerParams& params);
     };
 
+    /**
+     * Permute channels of 4-dimensional input blob.
+     * @param group Number of groups to split input channels and pick in turns
+     *              into output blob.
+     *
+     * \f[ groupSize = \frac{number\ of\ channels}{group} \f]
+     * \f[ output(n, c, h, w) = input(n, groupSize \times (c \% group) + \lfloor \frac{c}{group} \rfloor, h, w) \f]
+     * Read more at https://arxiv.org/pdf/1707.01083.pdf
+     */
+    class CV_EXPORTS ShuffleChannelLayer : public Layer
+    {
+    public:
+        static Ptr<Layer> create(const LayerParams& params);
+
+        int group;
+    };
+
     /**
      * @brief Adds extra values for specific axes.
      * @param paddings Vector of paddings in format