diff --git a/testdata/cv/fast/result_no_nonmax.xml b/testdata/cv/fast/result_no_nonmax.xml
new file mode 100644
index 000000000..c4a760a6c
--- /dev/null
+++ b/testdata/cv/fast/result_no_nonmax.xml
@@ -0,0 +1,83 @@
+<?xml version="1.0"?>
+<opencv_storage>
+<exp_kps type_id="opencv-matrix">
+  <rows>1</rows>
+  <cols>1848</cols>
+  <dt>u</dt>
+  <data>
+    0 0 81 67 0 0 214 66 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255
+    255 255 0 0 77 67 0 0 252 66 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0
+    255 255 255 255 0 0 114 67 0 0 0 67 0 0 224 64 0 0 128 191 0 0 0 0 0
+    0 0 0 255 255 255 255 0 0 82 67 0 0 5 67 0 0 224 64 0 0 128 191 0 0
+    0 0 0 0 0 0 255 255 255 255 0 0 79 67 0 0 6 67 0 0 224 64 0 0 128
+    191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 82 67 0 0 6 67 0 0 224 64 0
+    0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 36 67 0 0 39 67 0 0
+    224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 72 67 0 0 41
+    67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 54 67
+    0 0 50 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0
+    54 67 0 0 51 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255
+    255 0 0 24 67 0 0 71 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255
+    255 255 255 0 0 23 67 0 0 79 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0
+    0 255 255 255 255 0 0 23 67 0 0 80 67 0 0 224 64 0 0 128 191 0 0 0 0
+    0 0 0 0 255 255 255 255 0 0 40 67 0 0 80 67 0 0 224 64 0 0 128 191 0
+    0 0 0 0 0 0 0 255 255 255 255 0 0 40 67 0 0 81 67 0 0 224 64 0 0 128
+    191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 62 67 0 0 90 67 0 0 224 64 0
+    0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 52 67 0 0 92 67 0 0
+    224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 77 67 0 0 126
+    67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 44 67
+    0 0 137 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0
+    0 34 67 0 0 138 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255
+    255 255 0 0 39 67 0 0 142 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0
+    255 255 255 255 0 0 224 64 0 0 146 67 0 0 224 64 0 0 128 191 0 0 0 0
+    0 0 0 0 255 255 255 255 0 0 14 67 0 0 147 67 0 0 224 64 0 0 128 191
+    0 0 0 0 0 0 0 0 255 255 255 255 0 0 152 65 0 128 147 67 0 0 224 64 0
+    0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 13 67 0 128 147 67 0 0
+    224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 144 65 0 0
+    148 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 13
+    67 0 0 148 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255
+    0 0 18 67 0 128 148 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255
+    255 255 255 0 0 37 67 0 0 149 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0
+    0 0 255 255 255 255 0 0 37 67 0 128 149 67 0 0 224 64 0 0 128 191 0
+    0 0 0 0 0 0 0 255 255 255 255 0 0 90 67 0 128 150 67 0 0 224 64 0 0
+    128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 17 67 0 0 151 67 0 0 224
+    64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 30 67 0 0 153 67
+    0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 29 67 0
+    128 153 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0
+    0 5 67 0 0 155 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255
+    255 0 0 252 66 0 0 156 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255
+    255 255 255 0 0 252 66 0 128 156 67 0 0 224 64 0 0 128 191 0 0 0 0 0
+    0 0 0 255 255 255 255 0 128 147 67 0 128 157 67 0 0 224 64 0 0 128
+    191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 150 67 0 128 161 67 0 0 224
+    64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 128 149 67 0 0 162
+    67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 150 67
+    0 0 162 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0
+    0 47 67 0 0 163 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255
+    255 255 0 0 178 66 0 0 169 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0
+    255 255 255 255 0 0 148 67 0 128 170 67 0 0 224 64 0 0 128 191 0 0 0
+    0 0 0 0 0 255 255 255 255 0 0 148 67 0 0 171 67 0 0 224 64 0 0 128
+    191 0 0 0 0 0 0 0 0 255 255 255 255 0 128 148 67 0 128 171 67 0 0
+    224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 91 67 0 128
+    174 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0
+    103 67 0 128 174 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255
+    255 255 0 0 104 67 0 128 174 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0
+    0 255 255 255 255 0 0 132 67 0 128 177 67 0 0 224 64 0 0 128 191 0 0
+    0 0 0 0 0 0 255 255 255 255 0 128 131 67 0 0 178 67 0 0 224 64 0 0
+    128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 84 67 0 0 179 67 0 0 224
+    64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 130 66 0 0 194 67
+    0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 128 132 67
+    0 128 199 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255
+    0 0 12 66 0 0 205 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255
+    255 255 0 0 16 66 0 0 205 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0
+    255 255 255 255 0 0 20 66 0 0 205 67 0 0 224 64 0 0 128 191 0 0 0 0
+    0 0 0 0 255 255 255 255 0 0 89 67 0 0 209 67 0 0 224 64 0 0 128 191
+    0 0 0 0 0 0 0 0 255 255 255 255 0 0 89 67 0 128 209 67 0 0 224 64 0
+    0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 86 67 0 128 211 67 0 0
+    224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 129 67 0 128
+    214 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0
+    126 67 0 128 215 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255
+    255 255 0 0 127 67 0 128 215 67 0 0 224 64 0 0 128 191 0 0 0 0 0 0 0
+    0 255 255 255 255 0 0 106 67 0 128 216 67 0 0 224 64 0 0 128 191 0 0
+    0 0 0 0 0 0 255 255 255 255 0 0 131 67 0 128 217 67 0 0 224 64 0 0
+    128 191 0 0 0 0 0 0 0 0 255 255 255 255 0 0 121 67 0 128 219 67 0 0
+    224 64 0 0 128 191 0 0 0 0 0 0 0 0 255 255 255 255</data></exp_kps>
+</opencv_storage>
diff --git a/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_JSON.json b/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_JSON.json
index d445f6785..4a1ff7d99 100644
--- a/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_JSON.json
+++ b/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_JSON.json
@@ -4,7 +4,7 @@
         "rows": 10,
         "cols": 20,
         "dt": "3u",
-        "data": "$base64$M3UgICAgICAgICAgICAgICAgICAgICAgAQB/AQF/AQJ/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/AQF/AQJ/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/AQJ/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/ARt/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/ARt/ARx/"
+        "data": "$base64$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"
     },
     "normal_nd_mat": {
         "type_id": "opencv-nd-matrix",
@@ -24,6 +24,6 @@
         "rows": 8,
         "cols": 16,
         "dt": "d",
-        "data": "$base64$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"
+        "data": "$base64$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"
     },
     "rawdata": "$base64$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"}
diff --git a/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_XML.xml b/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_XML.xml
index a64265a28..2e7859a1b 100644
--- a/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_XML.xml
+++ b/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_XML.xml
@@ -5,19 +5,19 @@
   <cols>20</cols>
   <dt>"3u"</dt>
   <data type_id="binary">
-    M3UgICAgICAgICAgICAgICAgICAgICAgAQB/AQF/AQJ/AQN/AQR/AQV/AQZ/AQd/
-    AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/AQF/AQJ/AQN/AQR/
-    AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/
-    AQJ/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/
-    ARJ/ARN/ARR/ARV/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/
-    AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/
-    AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/AQV/AQZ/AQd/AQh/
-    AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/
-    AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/
-    ARZ/ARd/ARh/ARl/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/
-    ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/
-    ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/ARt/AQl/AQp/AQt/AQx/
-    AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/ARt/ARx/
+    M3UgICAgICAgICAgICAgICAgICAgICAg6DrLEJOr8OWp89Z1Qix4JK+xE2jdafdY
+    L6SouPTDrdd2CAaWNEyys4CuV7mUmY8iA8/4d2H+8ASTH3/UUjIvxfulUrIXLnVi
+    O9mUFPbu3P1RYVHotx08r7C9VIG+xA9Rni0xKUKkOASealq1WwKXz/cUMzXvI08n
+    YU9LAp+Z4ZVAmTZPOwsIN1Zd91SjV1l4sUvL1f5nJt93Otn1YYOycIissh7yGUIF
+    wa9zlr9bZ7FVHws0X8hp9I/07eUfA2MQQ6TFChaIwsSQPqxpgsl74KKgpd9AI6k8
+    euvxyRCvPqUJcxJkLvgSBZbSYCC2cTBJ7T19vQl1+WCNs76rMZwjFMXZsd2zj79C
+    C0pvKWm9JvcFvbshU4bXVSidu2sHAjHeNZ+BbvqEqoZarmVKEwBlGMTGrSRgloR1
+    F4iNQ19+DZ6TIud2VhXuysPv5P0ld6NmUeBKnx7BptUYgGF84zoCUJ9dCBOrXPwl
+    qTcKxeUIrc8raOLdNf2IA2aO2mFF60lYXtqUJ7HJJsy8is4xdMhMtgJ45bCoqm5l
+    JVvTyigasEcxOtDS+3ZBMe2h2a4oZA3yzEvIfaJlajI/5vyknTQhBGzpQMN21pUL
+    OzrtQrWWEvhYgNO4tolSP5S9wXIa/Yx86idkoHf4+FioW/do6H4p7aaoX1R/NNNy
+    q80t4EMxq4tH2PyGlVYO7IVZXLqx9Ox4gKBriXdJVimD+wTuY/6LKnxhuxBZaKVk
+    iRxSgGa3efoEGjW+ChhaubnDeJwfxYWFWnqZr1O0lk51CXrVeHnU+T7JmOr96s67
     </data></normal_2d_mat>
 <normal_nd_mat type_id="opencv-nd-matrix">
   <sizes type_id="binary">
@@ -42,28 +42,28 @@
   <cols>16</cols>
   <dt>d</dt>
   <data type_id="binary">
-    MWQgICAgICAgICAgICAgICAgICAgICAgfwEAcyOC5D8wXwTRWhniPyoSRI0e1dE/
-    zFLwU7v42z/PJzrYwBfUP6QPykt9Q78/0HCaMombuT8tPaWjIPjcP+B97Ci5KL8/
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-    FF9bhblHzD8WX9aYcKnsP0hHTHzNH+s/QCYrHW1Azj9w2Ta67n/tP0cXraad+OU/
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-    mzP4pbU/3z+wqh5bBt3sP9iUx9QRcqI/nohCraEGyD8OV9VI9TjpP3bxaCsFU+8/
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-    qp5Bhzlxzz9UI3dUx2DtP0TkszN7EcM/wEYocT9y1T/16ZnndgrhP5QJBK2AGs0/
-    LpI2myBa6j/gCcr7UeDlPyCWLdl2rbs/pr2lqmuu0z/iDhn2JJPkPw==
+    MWQgICAgICAgICAgICAgICAgICAgICAg5Akmnf6Nxz/PORUM4+vuPzZ4TpZRMuM/
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+    aMtuWszH5D96RYks7LvTP9wqsjVp5dU/lkP0pCj73D80kR11EavoP73PUOpDlt8/
+    qNR+UN3L5j8tl2ZzAintP/zCTNSDiOU/PbuKMu+d3D8BZJ0uTuriP7XTIlaKOOA/
+    qG3AiJR02T+V2xvPywnuP/ecrf2X/+E/0IAPg+BSvj/wMNOtp3nuP3AJDq7ti+U/
+    AHewImOBfj9Aft+n6D7ZPx6Dd8V1NNM/wNP4u99S6T+8VEj0JpK2P24BSb5Pk8I/
+    ygSUmcGW6j+rRMpbNo3jP65xo5SFYuw/FBRguvs1vD9f7/LZ2qnvP20wT1VN0us/
+    oNotz6cozT90VtoPPEfOPy22rVullNA/IHC8rBTusz9o7nEf7oHpPzo46fR30O4/
+    PrvcDHcH1D866OR2JmbMP1hnZuE6vKM/qNjCVZHpzD+MMrQyy22+P2Zo5pi019I/
+    jk2xAcZD2T/rw/shL/LoP9WsKMb7yec/ZjYeV6PAzj8oxLfO2aC2P0iEZClV/t0/
+    3g6+iadE6z9M7apJAmbpP0w60p141N0/kNTvSw35vz8cZNPEAqXtP+7stEU4TsE/
+    0K+d+wKxvT9RHbPnv9DjPwDL7Liu8I4/8/efXFeo0z/wC/kI0QvtP7aasvmhHs4/
+    9Im2JwyusT+WqBGIUHTvPwP53R2moNE/sP4BXxr0nD84SQYToy6jP5WtcKKYCeY/
+    y9plhvYJ4D9SE0DfBUzRP+3m94XRoOU/MHXFFgIo4j9LF0LeUG3hPw==
     </data></random_mat>
 <rawdata type_id="binary">
   MnUzaTJkaSAgICAgICAgICAgICAgICAgAQIBAAAAAgAAAAMAAACamZmZmZm5P5qZ
diff --git a/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_YAML.yml b/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_YAML.yml
index 462b44d10..909cd1bd8 100644
--- a/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_YAML.yml
+++ b/testdata/cv/io/3_4/Core_InputOutput--filestorage_base64_basic_rw_YAML.yml
@@ -5,19 +5,19 @@ normal_2d_mat: !!opencv-matrix
    cols: 20
    dt: "3u"
    data: !!binary |
-      M3UgICAgICAgICAgICAgICAgICAgICAgAQB/AQF/AQJ/AQN/AQR/AQV/AQZ/AQd/
-      AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/AQF/AQJ/AQN/AQR/
-      AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/
-      AQJ/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/
-      ARJ/ARN/ARR/ARV/AQN/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/
-      AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/AQR/AQV/AQZ/AQd/AQh/AQl/AQp/AQt/
-      AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/AQV/AQZ/AQd/AQh/
-      AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/
-      AQZ/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/
-      ARZ/ARd/ARh/ARl/AQd/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/ARB/ARF/ARJ/
-      ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/AQh/AQl/AQp/AQt/AQx/AQ1/AQ5/AQ9/
-      ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/ARt/AQl/AQp/AQt/AQx/
-      AQ1/AQ5/AQ9/ARB/ARF/ARJ/ARN/ARR/ARV/ARZ/ARd/ARh/ARl/ARp/ARt/ARx/
+      M3UgICAgICAgICAgICAgICAgICAgICAg6DrLEJOr8OWp89Z1Qix4JK+xE2jdafdY
+      L6SouPTDrdd2CAaWNEyys4CuV7mUmY8iA8/4d2H+8ASTH3/UUjIvxfulUrIXLnVi
+      O9mUFPbu3P1RYVHotx08r7C9VIG+xA9Rni0xKUKkOASealq1WwKXz/cUMzXvI08n
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+      euvxyRCvPqUJcxJkLvgSBZbSYCC2cTBJ7T19vQl1+WCNs76rMZwjFMXZsd2zj79C
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+      F4iNQ19+DZ6TIud2VhXuysPv5P0ld6NmUeBKnx7BptUYgGF84zoCUJ9dCBOrXPwl
+      qTcKxeUIrc8raOLdNf2IA2aO2mFF60lYXtqUJ7HJJsy8is4xdMhMtgJ45bCoqm5l
+      JVvTyigasEcxOtDS+3ZBMe2h2a4oZA3yzEvIfaJlajI/5vyknTQhBGzpQMN21pUL
+      OzrtQrWWEvhYgNO4tolSP5S9wXIa/Yx86idkoHf4+FioW/do6H4p7aaoX1R/NNNy
+      q80t4EMxq4tH2PyGlVYO7IVZXLqx9Ox4gKBriXdJVimD+wTuY/6LKnxhuxBZaKVk
+      iRxSgGa3efoEGjW+ChhaubnDeJwfxYWFWnqZr1O0lk51CXrVeHnU+T7JmOr96s67
 normal_nd_mat: !!opencv-nd-matrix
    sizes: !!binary |
       aSAgICAgICAgICAgICAgICAgICAgICAgAgAAAAIAAAABAAAAAgAAAA==
@@ -39,28 +39,28 @@ random_mat: !!opencv-matrix
    cols: 16
    dt: d
    data: !!binary |
-      MWQgICAgICAgICAgICAgICAgICAgICAgfwEAcyOC5D8wXwTRWhniPyoSRI0e1dE/
-      zFLwU7v42z/PJzrYwBfUP6QPykt9Q78/0HCaMombuT8tPaWjIPjcP+B97Ci5KL8/
-      3EpzlPKQ5j9Y8DJWszqyP6K5UaHz1+E/SE0OJBN6sD9Bg9FMnsrvP2Sgnp28ENM/
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-      YWF47boL2j/eJLwXl0HuPySmWwaQ5tM/GypZhvfx5T/Bh8tU4cDeP5Bp81RTPrA/
-      GOCLak2+sT9wVI0CHFWyP9a8UelJX+A/nHGByrLGxT+6LVMxaC7OPxLV1szv1eM/
-      zuAOyXc/yT8sF602bUqyP4q7kQ+qkOs/CNwsx7Xawz8pVNSDBeviPzSjFuWZhLA/
-      HhJGNeJXzT8gQi3xOYPVP2Dkc1qWGd4/Kjg8Z+Y+1D/wVPl//4/qP3T4KEX47cA/
-      JPWcs6uDtD8VAaSwRKPfP7DX9sUVhr0/HRgTQld/5T/IpSqoWnCwPxSC8VAJLuo/
-      Ht8JNNfP6D8OF9GlRAXQP/6QrssVotE/qBC4aQU05z8u/GaaFi/mP5j8l/OLOc4/
-      FF9bhblHzD8WX9aYcKnsP0hHTHzNH+s/QCYrHW1Azj9w2Ta67n/tP0cXraad+OU/
-      U8plWz/G5D94QsnShQvZP6Wou0C5qeg/kGYoLD/V5j9GoIau+ATvP4mQDqP47uc/
-      eLHHT0gq4D8QIAWMQ+ydPzHYYILd3tw/yDfY0bYfoj8qnbC/deXkPwF/Sdd7itY/
-      qeO0BdXE2D9ehtvuzaflP4D9Xml9P44/Svlvcz7e5j8AqabN+DLqP+D5eGowJ44/
-      2PGf6Y++0z9sLfJxQ4HVPzzx+YKlpug/lWNIKXCq5j/DduYOqpLkPzZvhGJInu4/
-      9Cwu9KHZ6D8GlUikkGLqPw4SagrxyeQ/IJqUoH1Dlz/fcGChHhPYP2hgtrIst9U/
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-      mzP4pbU/3z+wqh5bBt3sP9iUx9QRcqI/nohCraEGyD8OV9VI9TjpP3bxaCsFU+8/
-      ONwOBhDc5z9EPg80VULSP1peOLxZSuI/mDjC4HtF5D9fJMQkmSbiP5C9QjgOWp0/
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-      LpI2myBa6j/gCcr7UeDlPyCWLdl2rbs/pr2lqmuu0z/iDhn2JJPkPw==
+      MWQgICAgICAgICAgICAgICAgICAgICAg5Akmnf6Nxz/PORUM4+vuPzZ4TpZRMuM/
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+      jw1cENON7T/AJO1c1jbrP+bf6t0pCuw/gNOsK8p2YD+2T77zB/7DP7lc1NjrDuc/
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 rawdata: !!binary |
    MnUzaTJkaSAgICAgICAgICAgICAgICAgAQIBAAAAAgAAAAMAAACamZmZmZm5P5qZ
    mZmZmck/AAAAAAECAQAAAAIAAAADAAAAmpmZmZmZuT+amZmZmZnJPwEAAAABAgEA