diff --git a/src/dnn/dnn.cpp b/src/dnn/dnn.cpp
index f70fda40..6deee826 100644
--- a/src/dnn/dnn.cpp
+++ b/src/dnn/dnn.cpp
@@ -276,10 +276,14 @@ CvStatus Layer_GetType(Layer layer, char **rval)
   END_WRAP
 }
 
-void Layer_Close(LayerPtr layer){CVD_FREE(layer)}
+void Layer_Close(LayerPtr layer)
+{
+  layer->ptr->reset();
+  CVD_FREE(layer)
+}
 
-CvStatus
-    NMSBoxes(VecRect bboxes, VecFloat scores, float score_threshold, float nms_threshold, VecInt *indices)
+CvStatus NMSBoxes(VecRect bboxes, VecFloat scores, float score_threshold, float nms_threshold,
+                  VecInt *indices)
 {
   BEGIN_WRAP
   std::vector<int> v;
diff --git a/src/extra/img_hash.cpp b/src/extra/img_hash.cpp
index fdf00226..1757b6e5 100644
--- a/src/extra/img_hash.cpp
+++ b/src/extra/img_hash.cpp
@@ -45,7 +45,11 @@ CvStatus BlockMeanHash_SetMode(BlockMeanHash self, int mode)
   BEGIN_WRAP(*self.ptr)->setMode(mode);
   END_WRAP
 }
-void BlockMeanHash_Close(BlockMeanHashPtr self){CVD_FREE(self)}
+void BlockMeanHash_Close(BlockMeanHashPtr self)
+{
+  self->ptr->reset();
+  CVD_FREE(self)
+}
 
 CvStatus BlockMeanHash_Compute(BlockMeanHash self, Mat inputArr, Mat outputArr)
 {
diff --git a/src/extra/wechat_qrcode.cpp b/src/extra/wechat_qrcode.cpp
index 0b7445db..90b616cc 100644
--- a/src/extra/wechat_qrcode.cpp
+++ b/src/extra/wechat_qrcode.cpp
@@ -1,4 +1,5 @@
 #include "wechat_qrcode.h"
+#include "core/core.h"
 #include <vector>
 
 CvStatus WeChatQRCode_New(WeChatQRCode *qrcode)
@@ -17,13 +18,8 @@ CvStatus WeChatQRCode_NewWithParams(const char *detector_prototxt_path, const ch
                                                  super_resolution_caffe_model_path)};
   END_WRAP
 }
-void WeChatQRCode_Close(WeChatQRCodePtr self)
-{
-  delete self->ptr;
-  self->ptr = nullptr;
-  delete self;
-  self = nullptr;
-}
+void WeChatQRCode_Close(WeChatQRCodePtr self){CVD_FREE(self)}
+
 CvStatus WeChatQRCode_DetectAndDecode(WeChatQRCode *self, Mat img, VecMat *points, VecVecChar *rval)
 {
   BEGIN_WRAP
diff --git a/src/features2d/features2d.cpp b/src/features2d/features2d.cpp
index db4a339b..d5ad2aa9 100644
--- a/src/features2d/features2d.cpp
+++ b/src/features2d/features2d.cpp
@@ -14,7 +14,11 @@ CvStatus AKAZE_Create(AKAZE *rval)
   *rval = {new cv::Ptr<cv::AKAZE>(cv::AKAZE::create())};
   END_WRAP
 }
-void AKAZE_Close(AKAZEPtr a){CVD_FREE(a)}
+void AKAZE_Close(AKAZEPtr a)
+{
+  a->ptr->reset();
+  CVD_FREE(a)
+}
 
 CvStatus AKAZE_Detect(AKAZE a, Mat src, VecKeyPoint *rval)
 {
@@ -39,7 +43,11 @@ CvStatus AgastFeatureDetector_Create(AgastFeatureDetector *rval)
   *rval = {new cv::Ptr<cv::AgastFeatureDetector>(cv::AgastFeatureDetector::create())};
   END_WRAP
 }
-void AgastFeatureDetector_Close(AgastFeatureDetectorPtr a){CVD_FREE(a)}
+void AgastFeatureDetector_Close(AgastFeatureDetectorPtr a)
+{
+  a->ptr->reset();
+  CVD_FREE(a)
+}
 
 CvStatus AgastFeatureDetector_Detect(AgastFeatureDetector a, Mat src, VecKeyPoint *rval)
 {
@@ -56,7 +64,11 @@ CvStatus BRISK_Create(BRISK *rval)
   *rval = {new cv::Ptr<cv::BRISK>(cv::BRISK::create())};
   END_WRAP
 }
-void BRISK_Close(BRISKPtr b){CVD_FREE(b)}
+void BRISK_Close(BRISKPtr b)
+{
+  b->ptr->reset();
+  CVD_FREE(b)
+}
 
 CvStatus BRISK_Detect(BRISK b, Mat src, VecKeyPoint *rval)
 {
@@ -90,7 +102,11 @@ CvStatus FastFeatureDetector_CreateWithParams(int threshold, bool nonmaxSuppress
       cv::FastFeatureDetector::create(threshold, nonmaxSuppression, type_))};
   END_WRAP
 }
-void FastFeatureDetector_Close(FastFeatureDetectorPtr f){CVD_FREE(f)}
+void FastFeatureDetector_Close(FastFeatureDetectorPtr f)
+{
+  f->ptr->reset();
+  CVD_FREE(f)
+}
 
 CvStatus FastFeatureDetector_Detect(FastFeatureDetector f, Mat src, VecKeyPoint *rval)
 {
@@ -107,7 +123,11 @@ CvStatus GFTTDetector_Create(GFTTDetector *rval)
   *rval = {new cv::Ptr<cv::GFTTDetector>(cv::GFTTDetector::create())};
   END_WRAP
 }
-void GFTTDetector_Close(GFTTDetectorPtr a){CVD_FREE(a)}
+void GFTTDetector_Close(GFTTDetectorPtr a)
+{
+  a->ptr->reset();
+  CVD_FREE(a)
+}
 
 CvStatus GFTTDetector_Detect(GFTTDetector a, Mat src, VecKeyPoint *rval)
 {
@@ -124,7 +144,11 @@ CvStatus KAZE_Create(KAZE *rval)
   *rval = {new cv::Ptr<cv::KAZE>(cv::KAZE::create())};
   END_WRAP
 }
-void KAZE_Close(KAZEPtr a){CVD_FREE(a)}
+void KAZE_Close(KAZEPtr a)
+{
+  a->ptr->reset();
+  CVD_FREE(a)
+}
 
 CvStatus KAZE_Detect(KAZE a, Mat src, VecKeyPoint *rval)
 {
@@ -149,7 +173,11 @@ CvStatus MSER_Create(MSER *rval)
   *rval = {new cv::Ptr<cv::MSER>(cv::MSER::create())};
   END_WRAP
 }
-void MSER_Close(MSERPtr a){CVD_FREE(a)}
+void MSER_Close(MSERPtr a)
+{
+  a->ptr->reset();
+  CVD_FREE(a)
+}
 
 CvStatus MSER_Detect(MSER a, Mat src, VecKeyPoint *rval)
 {
@@ -176,7 +204,11 @@ CvStatus ORB_CreateWithParams(int nfeatures, float scaleFactor, int nlevels, int
                                                 WTA_K, type, patchSize, fastThreshold))};
   END_WRAP
 }
-void ORB_Close(ORBPtr o){CVD_FREE(o)}
+void ORB_Close(ORBPtr o)
+{
+  o->ptr->reset();
+  CVD_FREE(o)
+}
 
 CvStatus ORB_Detect(ORB o, Mat src, VecKeyPoint *rval)
 {
@@ -262,7 +294,11 @@ CvStatus SimpleBlobDetector_Create_WithParams(SimpleBlobDetectorParams params, S
       new cv::Ptr<cv::SimpleBlobDetector>(cv::SimpleBlobDetector::create(ConvertCParamsToCPPParams(params)))};
   END_WRAP
 }
-void SimpleBlobDetector_Close(SimpleBlobDetectorPtr b){CVD_FREE(b)}
+void SimpleBlobDetector_Close(SimpleBlobDetectorPtr b)
+{
+  b->ptr->reset();
+  CVD_FREE(b)
+}
 
 CvStatus SimpleBlobDetector_Detect(SimpleBlobDetector b, Mat src, VecKeyPoint *rval)
 {
@@ -291,7 +327,11 @@ CvStatus BFMatcher_CreateWithParams(int normType, bool crossCheck, BFMatcher *rv
   *rval = {new cv::Ptr<cv::BFMatcher>(cv::BFMatcher::create(normType, crossCheck))};
   END_WRAP
 }
-void BFMatcher_Close(BFMatcherPtr b){CVD_FREE(b)}
+void BFMatcher_Close(BFMatcherPtr b)
+{
+  b->ptr->reset();
+  CVD_FREE(b)
+}
 
 CvStatus BFMatcher_Match(BFMatcher b, Mat query, Mat train, VecDMatch *rval)
 {
@@ -316,7 +356,11 @@ CvStatus FlannBasedMatcher_Create(FlannBasedMatcher *rval)
   *rval = {new cv::Ptr<cv::FlannBasedMatcher>(cv::FlannBasedMatcher::create())};
   END_WRAP
 }
-void FlannBasedMatcher_Close(FlannBasedMatcherPtr f){CVD_FREE(f)}
+void FlannBasedMatcher_Close(FlannBasedMatcherPtr f)
+{
+  f->ptr->reset();
+  CVD_FREE(f)
+}
 
 CvStatus FlannBasedMatcher_KnnMatch(FlannBasedMatcher f, Mat query, Mat train, int k, VecVecDMatch *rval)
 {
@@ -341,7 +385,11 @@ CvStatus SIFT_Create(SIFT *rval)
   *rval = {new cv::Ptr<cv::SIFT>(cv::SIFT::create())};
   END_WRAP
 }
-void SIFT_Close(SIFTPtr f){CVD_FREE(f)}
+void SIFT_Close(SIFTPtr f)
+{
+  f->ptr->reset();
+  CVD_FREE(f)
+}
 
 CvStatus SIFT_Detect(SIFT f, Mat src, VecKeyPoint *rval)
 {
diff --git a/src/imgproc/imgproc.cpp b/src/imgproc/imgproc.cpp
index c9ffbc00..7512d75f 100644
--- a/src/imgproc/imgproc.cpp
+++ b/src/imgproc/imgproc.cpp
@@ -715,7 +715,11 @@ CvStatus CLAHE_CreateWithParams(double clipLimit, Size tileGridSize, CLAHE *rval
       new cv::Ptr<cv::CLAHE>(cv::createCLAHE(clipLimit, cv::Size(tileGridSize.width, tileGridSize.height)))};
   END_WRAP
 }
-void CLAHE_Close(CLAHEPtr c){CVD_FREE(c)}
+void CLAHE_Close(CLAHEPtr c)
+{
+  c->ptr->reset();
+  CVD_FREE(c)
+}
 
 CvStatus CLAHE_Apply(CLAHE c, Mat src, Mat dst)
 {
diff --git a/src/objdetect/objdetect.cpp b/src/objdetect/objdetect.cpp
index 633da79a..be44baa1 100644
--- a/src/objdetect/objdetect.cpp
+++ b/src/objdetect/objdetect.cpp
@@ -411,7 +411,7 @@ CvStatus FaceDetectorYN_NewFromBuffer(const char *framework, VecUChar buffer, Ve
 
 void FaceDetectorYN_Close(FaceDetectorYNPtr self)
 {
-  self->ptr = nullptr;
+  self->ptr->reset();
   CVD_FREE(self)
 }
 
@@ -486,7 +486,7 @@ CvStatus FaceRecognizerSF_New(const char *model, const char *config, int backend
 }
 void FaceRecognizerSF_Close(FaceRecognizerSFPtr self)
 {
-  self->ptr = nullptr;
+  self->ptr->reset();
   CVD_FREE(self)
 }
 
diff --git a/src/photo/photo.cpp b/src/photo/photo.cpp
index ef89b01d..3bf9e31d 100644
--- a/src/photo/photo.cpp
+++ b/src/photo/photo.cpp
@@ -98,7 +98,11 @@ CvStatus MergeMertens_Process(MergeMertens b, VecMat src, Mat dst)
   BEGIN_WRAP(*b.ptr)->process(*src.ptr, *dst.ptr);
   END_WRAP
 }
-void MergeMertens_Close(MergeMertensPtr b){CVD_FREE(b)}
+void MergeMertens_Close(MergeMertensPtr b)
+{
+  b->ptr->reset();
+  CVD_FREE(b)
+}
 
 CvStatus AlignMTB_Create(AlignMTB *rval)
 {
@@ -120,7 +124,11 @@ CvStatus AlignMTB_Process(AlignMTB b, VecMat src, VecMat *dst)
   *dst = {new std::vector<cv::Mat>(vec)};
   END_WRAP
 }
-void AlignMTB_Close(AlignMTBPtr b){CVD_FREE(b)}
+void AlignMTB_Close(AlignMTBPtr b)
+{
+  b->ptr->reset();
+  CVD_FREE(b)
+}
 
 CvStatus DetailEnhance(Mat src, Mat dst, float sigma_s, float sigma_r)
 {
diff --git a/src/stitching/stitching.cpp b/src/stitching/stitching.cpp
index 1f821ce7..7dd85058 100644
--- a/src/stitching/stitching.cpp
+++ b/src/stitching/stitching.cpp
@@ -13,7 +13,11 @@ CvStatus Stitcher_Create(int mode, PtrStitcher *rval)
   END_WRAP
 }
 
-void Stitcher_Close(PtrStitcherPtr stitcher){CVD_FREE(stitcher)}
+void Stitcher_Close(PtrStitcherPtr stitcher)
+{
+  stitcher->ptr->reset();
+  CVD_FREE(stitcher)
+}
 
 CvStatus Stitcher_Get(PtrStitcher self, Stitcher *rval)
 {
diff --git a/src/video/video.cpp b/src/video/video.cpp
index a40a7721..5eec9685 100644
--- a/src/video/video.cpp
+++ b/src/video/video.cpp
@@ -23,7 +23,11 @@ CvStatus BackgroundSubtractorMOG2_CreateWithParams(int history, double varThresh
       cv::createBackgroundSubtractorMOG2(history, varThreshold, detectShadows))};
   END_WRAP
 }
-void BackgroundSubtractorMOG2_Close(BackgroundSubtractorMOG2Ptr self){CVD_FREE(self)}
+void BackgroundSubtractorMOG2_Close(BackgroundSubtractorMOG2Ptr self)
+{
+  self->ptr->reset();
+  CVD_FREE(self)
+}
 
 CvStatus BackgroundSubtractorMOG2_Apply(BackgroundSubtractorMOG2 self, Mat src, Mat dst)
 {
@@ -45,7 +49,11 @@ CvStatus BackgroundSubtractorKNN_CreateWithParams(int history, double dist2Thres
       cv::createBackgroundSubtractorKNN(history, dist2Threshold, detectShadows))};
   END_WRAP
 }
-void BackgroundSubtractorKNN_Close(BackgroundSubtractorKNNPtr self){CVD_FREE(self)}
+void BackgroundSubtractorKNN_Close(BackgroundSubtractorKNNPtr self)
+{
+  self->ptr->reset();
+  CVD_FREE(self)
+}
 
 CvStatus BackgroundSubtractorKNN_Apply(BackgroundSubtractorKNN self, Mat src, Mat dst)
 {
@@ -115,7 +123,11 @@ CvStatus TrackerMIL_Create(TrackerMIL *rval)
   *rval = {new cv::Ptr<cv::TrackerMIL>(cv::TrackerMIL::create())};
   END_WRAP
 }
-void TrackerMIL_Close(TrackerMILPtr self){CVD_FREE(self)}
+void TrackerMIL_Close(TrackerMILPtr self)
+{
+  self->ptr->reset();
+  CVD_FREE(self)
+}
 
 CvStatus KalmanFilter_New(int dynamParams, int measureParams, int controlParams, int type, KalmanFilter *rval)
 {