initial version to train yolo model

examples/meter-detection/download_dataset.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+WORKSPACE="kemals-workspace-kbc8l"
+PROJECT="electric-meter-detection-o4tfi"
+VERSION="1"
+FORMAT="yolov8"
+DATASET_DIR="examples/meter-detection/data/electric-meter-detection"
+
+if [[ -z "${ROBOFLOW_API_KEY:-}" ]]; then
+  echo "ROBOFLOW_API_KEY is required." >&2
+  echo "Run: export ROBOFLOW_API_KEY=your-roboflow-api-key" >&2
+  exit 1
+fi
+
+if ! command -v curl >/dev/null 2>&1; then
+  echo "curl is required." >&2
+  exit 1
+fi
+
+if ! command -v unzip >/dev/null 2>&1; then
+  echo "unzip is required." >&2
+  exit 1
+fi
+
+TMP_DIR="$(mktemp -d)"
+trap 'rm -rf "${TMP_DIR}"' EXIT
+
+API_URL="https://api.roboflow.com/${WORKSPACE}/${PROJECT}/${VERSION}/${FORMAT}?api_key=${ROBOFLOW_API_KEY}"
+RESPONSE_FILE="${TMP_DIR}/roboflow-export.json"
+ZIP_FILE="${TMP_DIR}/dataset.zip"
+
+echo "Requesting Roboflow export link..."
+curl -fsSL "${API_URL}" -o "${RESPONSE_FILE}"
+
+DOWNLOAD_URL="$(
+  sed -n 's/.*"link"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' "${RESPONSE_FILE}" \
+    | head -n 1 \
+    | sed 's#\\/#/#g; s#\\u0026#\&#g'
+)"
+
+if [[ -z "${DOWNLOAD_URL}" ]]; then
+  echo "Could not find export.link in Roboflow response." >&2
+  echo "Response:" >&2
+  cat "${RESPONSE_FILE}" >&2
+  exit 1
+fi
+
+mkdir -p "${DATASET_DIR}"
+
+echo "Downloading dataset ZIP..."
+curl -fL "${DOWNLOAD_URL}" -o "${ZIP_FILE}"
+
+echo "Extracting dataset..."
+unzip -q -o "${ZIP_FILE}" -d "${DATASET_DIR}"
+
+echo "Downloaded dataset to ${DATASET_DIR}"