gpuimgproc module fixes

modules/gpuimgproc/doc/feature_detection.rst

@@ -0,0 +1,81 @@
+Feature Detection
+=================
+
+.. highlight:: cpp
+
+
+
+gpu::cornerHarris
+---------------------
+Computes the Harris cornerness criteria at each image pixel.
+
+.. ocv:function:: void gpu::cornerHarris(const GpuMat& src, GpuMat& dst, int blockSize, int ksize, double k, int borderType=BORDER_REFLECT101)
+
+    :param src: Source image. Only  ``CV_8UC1`` and  ``CV_32FC1`` images are supported for now.
+
+    :param dst: Destination image containing cornerness values. It has the same size as ``src`` and ``CV_32FC1`` type.
+
+    :param blockSize: Neighborhood size.
+
+    :param ksize: Aperture parameter for the Sobel operator.
+
+    :param k: Harris detector free parameter.
+
+    :param borderType: Pixel extrapolation method. Only  ``BORDER_REFLECT101`` and  ``BORDER_REPLICATE`` are supported for now.
+
+.. seealso:: :ocv:func:`cornerHarris`
+
+
+
+gpu::cornerMinEigenVal
+--------------------------
+Computes the minimum eigen value of a 2x2 derivative covariation matrix at each pixel (the cornerness criteria).
+
+.. ocv:function:: void gpu::cornerMinEigenVal(const GpuMat& src, GpuMat& dst, int blockSize, int ksize, int borderType=BORDER_REFLECT101)
+
+.. ocv:function:: void gpu::cornerMinEigenVal(const GpuMat& src, GpuMat& dst, GpuMat& Dx, GpuMat& Dy, int blockSize, int ksize, int borderType=BORDER_REFLECT101)
+
+.. ocv:function:: void gpu::cornerMinEigenVal(const GpuMat& src, GpuMat& dst, GpuMat& Dx, GpuMat& Dy, GpuMat& buf, int blockSize, int ksize, int borderType=BORDER_REFLECT101, Stream& stream = Stream::Null())
+
+    :param src: Source image. Only  ``CV_8UC1`` and  ``CV_32FC1`` images are supported for now.
+
+    :param dst: Destination image containing cornerness values. The size is the same. The type is  ``CV_32FC1`` .
+
+    :param blockSize: Neighborhood size.
+
+    :param ksize: Aperture parameter for the Sobel operator.
+
+    :param borderType: Pixel extrapolation method. Only ``BORDER_REFLECT101`` and ``BORDER_REPLICATE`` are supported for now.
+
+.. seealso:: :ocv:func:`cornerMinEigenVal`
+
+
+
+gpu::GoodFeaturesToTrackDetector_GPU
+------------------------------------
+.. ocv:class:: gpu::GoodFeaturesToTrackDetector_GPU
+
+Class used for strong corners detection on an image. ::
+
+    class GoodFeaturesToTrackDetector_GPU
+    {
+    public:
+        explicit GoodFeaturesToTrackDetector_GPU(int maxCorners_ = 1000, double qualityLevel_ = 0.01, double minDistance_ = 0.0,
+            int blockSize_ = 3, bool useHarrisDetector_ = false, double harrisK_ = 0.04);
+
+        void operator ()(const GpuMat& image, GpuMat& corners, const GpuMat& mask = GpuMat());
+
+        int maxCorners;
+        double qualityLevel;
+        double minDistance;
+
+        int blockSize;
+        bool useHarrisDetector;
+        double harrisK;
+
+        void releaseMemory();
+    };
+
+The class finds the most prominent corners in the image.
+
+.. seealso:: :ocv:func:`goodFeaturesToTrack`