Merge pull request #1026 from mshabunin:fix-yolov4-tiny-hash

Author: alalek

testdata/dnn/download_models.py

@@ -899,14 +899,14 @@ def get_confirm_token(response):  # in case of large files
         filename='efficientdet-d0.pb'),
     Model(
         name='YOLOv4',  # https://github.com/opencv/opencv/issues/17148
-        downloader=GDrive('1cewMfusmPjYWbrnuJRuKhPMwRe_b9PaT'),
+        url="https://github.com/AlexeyAB/darknet/releases/download/yolov4/yolov4.weights",
         sha='0143deb6c46fcc7f74dd35bf3c14edc3784e99ee',
         filename='yolov4.weights'),
     Model(
-        name='YOLOv4-tiny',  # https://github.com/opencv/opencv/issues/17148
-        url='https://github.com/AlexeyAB/darknet/releases/download/darknet_yolo_v4_pre/yolov4-tiny.weights',
-        sha='d110379b7b86899226b591ad4affc7115f707157',
-        filename='yolov4-tiny.weights'),
+        name='YOLOv4-tiny-2020-12',  # https://github.com/opencv/opencv/issues/17148
+        url='https://github.com/AlexeyAB/darknet/releases/download/yolov4/yolov4-tiny.weights',
+        sha='451caaab22fb9831aa1a5ee9b5ba74a35ffa5dcb',
+        filename='yolov4-tiny-2020-12.weights'),
     Model(
         name='YOLOv4x-mish',  # https://github.com/opencv/opencv/issues/18975
         url='https://github.com/AlexeyAB/darknet/releases/download/darknet_yolo_v4_pre/yolov4x-mish.weights',

testdata/dnn/yolov4-tiny.cfg renamed to testdata/dnn/yolov4-tiny-2020-12.cfg

@@ -17,11 +17,20 @@ hue=.1
 
 learning_rate=0.00261
 burn_in=1000
-max_batches = 500200
+
+max_batches = 2000200
 policy=steps
-steps=400000,450000
+steps=1600000,1800000
 scales=.1,.1
 
+
+#weights_reject_freq=1001
+#ema_alpha=0.9998
+#equidistant_point=1000
+#num_sigmas_reject_badlabels=3
+#badlabels_rejection_percentage=0.2
+
+
 [convolutional]
 batch_normalize=1
 filters=32
@@ -230,6 +239,8 @@ random=0
 resize=1.5
 nms_kind=greedynms
 beta_nms=0.6
+#new_coords=1
+#scale_x_y = 2.0
 
 [route]
 layers = -4
@@ -279,3 +290,5 @@ random=0
 resize=1.5
 nms_kind=greedynms
 beta_nms=0.6
+#new_coords=1
+#scale_x_y = 2.0

testdata/dnn/yolov4-tiny.cfg.readme

@@ -1,2 +1,3 @@
-[Origin](https://github.com/AlexeyAB/darknet/blob/3af6781de273fa01f4a535c8e40c5056e809e22f/cfg/yolov4-tiny.cfg)
-[License](https://github.com/AlexeyAB/darknet/blob/3af6781de273fa01f4a535c8e40c5056e809e22f/LICENSE)
+[Origin](https://github.com/AlexeyAB/darknet/blob/0faed3e60e52f742bbef43b83f6be51dd30f373e/cfg/yolov4-tiny.cfg)
+[License](https://github.com/AlexeyAB/darknet/blob/a298f94255a20a3198d80ea512755d9e5dddbf02/LICENSE)
+[Weights](https://github.com/AlexeyAB/darknet/releases/download/yolov4/yolov4-tiny.weights)