added signal module

modules/signal/include/opencv2/signal.hpp

@@ -0,0 +1,17 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html
+#ifndef OPENCV_SIGNAL_HPP
+#define OPENCV_SIGNAL_HPP
+
+/**
+* @defgroup signal Signal Processing
+* @{
+* This module includes signal processing algorithms.
+* @}
+*/
+
+#include "opencv2/core.hpp"
+#include "opencv2/signal/signal_resample.hpp"
+
+#endif

modules/signal/include/opencv2/signal/signal_resample.hpp

@@ -0,0 +1,32 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html
+#ifndef OPENCV_SIGNAL_SIGNAL_RESAMPLE_HPP
+#define OPENCV_SIGNAL_SIGNAL_RESAMPLE_HPP
+
+#include <opencv2/core.hpp>
+
+namespace cv {
+namespace signal {
+
+//! @addtogroup signal
+//! @{
+
+/** @brief Signal resampling
+ *
+ * @param[in]  inputSignal              Array with input signal.
+ * @param[out] outSignal                Array with output signal
+ * @param[in]  inFreq                   Input signal frequency.
+ * @param[in]  outFreq                  Output signal frequency.
+ * Signal resampling implemented a cubic interpolation function and a filtering function based on Kaiser window and Bessel function, used to construct a FIR filter.
+ * Result is similar to `scipy.signal.resample`.
+
+Detail: https://en.wikipedia.org/wiki/Sample-rate_conversion
+*/
+CV_EXPORTS_W void resampleSignal(InputArray inputSignal, OutputArray outSignal, const int inFreq, const int outFreq);
+
+//! @}
+
+}
+}
+#endif