dnn: fix various dnn related typos

Fixes source comments and documentation related to dnn code.

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

@@ -389,7 +389,7 @@ CV__DNN_INLINE_NS_BEGIN
 
 
         /**
-         * @brief "Deattaches" all the layers, attached to particular layer.
+         * @brief "Detaches" all the layers, attached to particular layer.
          */
         virtual void unsetAttached();
 
@@ -1579,7 +1579,7 @@ public:
      * - top-right
      * - bottom-right
      *
-     * Use cv::getPerspectiveTransform function to retrive image region without perspective transformations.
+     * Use cv::getPerspectiveTransform function to retrieve image region without perspective transformations.
      *
      * @note If DL model doesn't support that kind of output then result may be derived from detectTextRectangles() output.
      *

modules/dnn/src/cuda/concat.cu

@@ -100,7 +100,7 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace kernels {
         CV_Assert(output.rank() == input.rank());
         CV_Assert(output_axis_offset < output.get_axis_size(axis));
 
-        /* if axes preceeding the concat axis are all singleton, the concat blocks are contiguous
+        /* if axes preceding the concat axis are all singleton, the concat blocks are contiguous
          * in the output and we can copy each block directly
          */
         if (output.size_range(0, axis) == 1)

modules/dnn/src/cuda/kernel_dispatcher.hpp

@@ -33,7 +33,7 @@
  * template <class T, std::size_t Rank>
  * void launch_some_kernel(...);
  *
- * // creates the dispatcher named "some_dispatcher" which invokves the correct instantiation of "launch_some_kernel"
+ * // creates the dispatcher named "some_dispatcher" which invokes the correct instantiation of "launch_some_kernel"
  * GENERATE_KERNEL_DISPATCHER(some_dispatcher, launch_some_kernel);
  *
  * // internal API function

modules/dnn/src/cuda/permute.cu

@@ -72,7 +72,7 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace kernels {
             __syncthreads();
 
             /* We interchange `threadIdx.x` and `threadIdx.y` so that consecutive output indices map to
-             * consecutive threads. This would allow writes across threds in a warp to be coalesced.
+             * consecutive threads. This would allow writes across threads in a warp to be coalesced.
              */
             const index_type out_x = blockIdx.y * TILE_SIZE + threadIdx.x;
             const index_type out_y_begin = blockIdx.x * TILE_SIZE + threadIdx.y;
@@ -156,7 +156,7 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace kernels {
          * tensor indices be [o1, o2, ...]. The permutation operation essentially copies items
          * from the input tensor to new locations in the output tensor as dictated by the indices.
          *
-         * If the size of the nth axis (say i2) of the input is one the input and output indicies for
+         * If the size of the nth axis (say i2) of the input is one the input and output indices for
          * all the elements will be of the form be [i1, 0, ...] and [..., 0, ...] respectively.
          * The index does not contribute to the element's address calculation and hence would give
          * identical result if it weren't there.

modules/dnn/src/cuda/slice.cu

@@ -159,7 +159,7 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace kernels {
 
         /* We can do a copy if the reduced rank is two and only the first axis is sliced.
          * The general requirement is that only one axis is sliced and all the axes that
-         * preceed the sliced axis are singleton. However, the reductions above will remove
+         * precede the sliced axis are singleton. However, the reductions above will remove
          * all the leading singleton axes and merge the trailing unsliced axes into one, or
          * zero if there are no trailing unsliced axes. The latter is handled separately.
          */

modules/dnn/src/cuda4dnn/csl/memory.hpp

@@ -68,7 +68,7 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace csl {
                     }
                 }
             });
-            /* std::shared_ptr<T>::reset invokves the deleter if an exception occurs; hence, we don't
+            /* std::shared_ptr<T>::reset invokes the deleter if an exception occurs; hence, we don't
              * need to have a try-catch block to free the allocated device memory
              */
 

modules/dnn/src/cuda4dnn/csl/pointer.hpp

@@ -147,7 +147,7 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace csl {
         /* host const void pointer to const void device pointer */
         CUDA4DNN_HOST_DEVICE explicit DevicePtr(pointer ptr_) noexcept : ptr{ ptr_ } { }
 
-        /* allow any device pointer to be implicitly convereted to void device pointer */
+        /* allow any device pointer to be implicitly converted to void device pointer */
         template <class T>
         CUDA4DNN_HOST_DEVICE DevicePtr(DevicePtr<T> ptr_) noexcept : ptr{ ptr_.get() } { }
 
@@ -199,7 +199,7 @@ namespace cv { namespace dnn { namespace cuda4dnn { namespace csl {
         /* host pointer to device pointer */
         CUDA4DNN_HOST_DEVICE explicit DevicePtr(pointer ptr_) noexcept : ptr{ ptr_ } { }
 
-        /* allow any device pointer to mutable memory to be implicitly convereted to void device pointer */
+        /* allow any device pointer to mutable memory to be implicitly converted to void device pointer */
         template <class T, typename std::enable_if<!std::is_const<T>::value, bool>::type = false>
         CUDA4DNN_HOST_DEVICE DevicePtr(DevicePtr<T> ptr_) noexcept : ptr { ptr_.get() } { }
 

modules/dnn/src/darknet/darknet_io.cpp

@@ -791,7 +791,7 @@ namespace cv {
                             if (layers_vec.size() > 1)
                             {
                                 // layer ids in layers_vec - inputs of Slice layers
-                                // after adding offset to layers_vec: layer ids - ouputs of Slice layers
+                                // after adding offset to layers_vec: layer ids - outputs of Slice layers
                                 for (size_t k = 0; k < layers_vec.size(); ++k)
                                     layers_vec[k] += layers_vec.size();
 

modules/dnn/src/model.cpp

@@ -799,7 +799,7 @@ struct TextRecognitionModel_Impl : public Model::Impl
 
     virtual
     std::string ctcPrefixBeamSearchDecode(const Mat& prediction) {
-          // CTC prefix beam seach decode.
+          // CTC prefix beam search decode.
           // For more detail, refer to:
           // https://distill.pub/2017/ctc/#inference
           // https://gist.github.com/awni/56369a90d03953e370f3964c826ed4b0i

modules/dnn/src/tengine4dnn/src/tengine_graph_convolution.cpp

@@ -331,7 +331,7 @@ teng_graph_t tengine_init(const char* layer_name, float* input_, int inch, int g
             teg_weight = kernel_;
         }
 
-        /* initial the resoruce of tengine */
+        /* initial the resource of tengine */
         if(false == tengine_init_flag)
         {
             init_tengine();

modules/dnn/test/test_ie_models.cpp

@@ -290,7 +290,7 @@ void runIE(Target target, const std::string& xmlPath, const std::string& binPath
         if (cvtest::debugLevel > 0)
         {
             const std::vector<size_t>& dims = desc.getDims();
-            std::cout << "Input: '" << it.first << "' precison=" << desc.getPrecision() << " dims=" << dims.size() << " [";
+            std::cout << "Input: '" << it.first << "' precision=" << desc.getPrecision() << " dims=" << dims.size() << " [";
             for (auto d : dims)
                 std::cout << " " << d;
             std::cout << "]  ocv_mat=" << inputsMap[it.first].size << " of " << typeToString(inputsMap[it.first].type()) << std::endl;
@@ -308,7 +308,7 @@ void runIE(Target target, const std::string& xmlPath, const std::string& binPath
         if (cvtest::debugLevel > 0)
         {
             const std::vector<size_t>& dims = desc.getDims();
-            std::cout << "Output: '" << it.first << "' precison=" << desc.getPrecision() << " dims=" << dims.size() << " [";
+            std::cout << "Output: '" << it.first << "' precision=" << desc.getPrecision() << " dims=" << dims.size() << " [";
             for (auto d : dims)
                 std::cout << " " << d;
             std::cout << "]  ocv_mat=" << outputsMap[it.first].size << " of " << typeToString(outputsMap[it.first].type()) << std::endl;

samples/dnn/speech_recognition.cpp

@@ -33,7 +33,7 @@ private:
     double highfreq = sample_rate / 2;
 
 public:
-    // Mel filterbanks preperation
+    // Mel filterbanks preparation
     double hz_to_mel(double frequencies)
     {
         //Converts frequencies from hz to mel scale
@@ -149,7 +149,7 @@ public:
         return weights;
     }
 
-    // STFT preperation
+    // STFT preparation
     vector<double> pad_window_center(vector<double>&data, int size)
     {
         // Pad the window out to n_fft size

samples/dnn/speech_recognition.py

@@ -44,7 +44,7 @@ import os
             model.graph.initializer.insert(i,init)
         ```
 
-     6. Add an additional reshape node to handle the inconsistant input from python and c++ of openCV.
+     6. Add an additional reshape node to handle the inconsistent input from python and c++ of openCV.
         see https://github.com/opencv/opencv/issues/19091
         Make & insert a new node with 'Reshape' operation & required initializer
         ```
@@ -256,7 +256,7 @@ class FilterbankFeatures:
         weights *= enorm[:, np.newaxis]
         return weights
 
-    # STFT preperation
+    # STFT preparation
     def pad_window_center(self, data, size, axis=-1, **kwargs):
         '''
             Centers the data and pads.
@@ -329,7 +329,7 @@ class FilterbankFeatures:
                     then padded with zeros to match n_fft
                 fft_window : a vector or array of length `n_fft` having values computed by a
                     window function
-                pad_mode : mode while padding the singnal
+                pad_mode : mode while padding the signal
                 return_complex : returns array with complex data type if `True`
             return : Matrix of short-term Fourier transform coefficients.
         '''