solves #11028 : added imagenet small versions 10,100 and 1000 (#12141)

* added imagenet small versions 10,100 and 1000

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

data/scripts/get_imagenet10.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+# YOLOv5 🚀 by Ultralytics, AGPL-3.0 license
+# Download ILSVRC2012 ImageNet dataset https://image-net.org
+# Example usage: bash data/scripts/get_imagenet.sh
+# parent
+# ├── yolov5
+# └── datasets
+#     └── imagenet  ← downloads here
+
+# Arguments (optional) Usage: bash data/scripts/get_imagenet.sh --train --val
+if [ "$#" -gt 0 ]; then
+  for opt in "$@"; do
+    case "${opt}" in
+    --train) train=true ;;
+    --val) val=true ;;
+    esac
+  done
+else
+  train=true
+  val=true
+fi
+
+# Make dir
+d='../datasets/imagenet10' # unzip directory
+mkdir -p $d && cd $d
+
+# Download/unzip train
+wget https://github.com/ultralytics/yolov5/releases/download/v1.0/imagenet10.zip
+unzip imagenet10.zip && rm imagenet10.zip

data/scripts/get_imagenet100.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+# YOLOv5 🚀 by Ultralytics, AGPL-3.0 license
+# Download ILSVRC2012 ImageNet dataset https://image-net.org
+# Example usage: bash data/scripts/get_imagenet.sh
+# parent
+# ├── yolov5
+# └── datasets
+#     └── imagenet  ← downloads here
+
+# Arguments (optional) Usage: bash data/scripts/get_imagenet.sh --train --val
+if [ "$#" -gt 0 ]; then
+  for opt in "$@"; do
+    case "${opt}" in
+    --train) train=true ;;
+    --val) val=true ;;
+    esac
+  done
+else
+  train=true
+  val=true
+fi
+
+# Make dir
+d='../datasets/imagenet100' # unzip directory
+mkdir -p $d && cd $d
+
+# Download/unzip train
+wget https://github.com/ultralytics/yolov5/releases/download/v1.0/imagenet100.zip
+unzip imagenet100.zip && rm imagenet100.zip

data/scripts/get_imagenet1000.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+# YOLOv5 🚀 by Ultralytics, AGPL-3.0 license
+# Download ILSVRC2012 ImageNet dataset https://image-net.org
+# Example usage: bash data/scripts/get_imagenet.sh
+# parent
+# ├── yolov5
+# └── datasets
+#     └── imagenet  ← downloads here
+
+# Arguments (optional) Usage: bash data/scripts/get_imagenet.sh --train --val
+if [ "$#" -gt 0 ]; then
+  for opt in "$@"; do
+    case "${opt}" in
+    --train) train=true ;;
+    --val) val=true ;;
+    esac
+  done
+else
+  train=true
+  val=true
+fi
+
+# Make dir
+d='../datasets/imagenet1000' # unzip directory
+mkdir -p $d && cd $d
+
+# Download/unzip train
+wget https://github.com/ultralytics/yolov5/releases/download/v1.0/imagenet1000.zip
+unzip imagenet1000.zip && rm imagenet1000.zip