adding unzip script and instructions

Author: gauravpradeep

.DS_Store

@@ -190,8 +190,9 @@ MultiScan/
 
 #### Structured3D
 
-1. Download Structured3D data(bbox data + perspective_full data for all non corrupt zips), unzip all and run the following scripts after making path related changes in each:
+1. Download Structured3D data(bbox data + perspective_full data for all non corrupt zips), run the following scripts after making path related changes in each:
 ```bash
+bash prepare_data/structured3d/unzip_data.sh
 python prepare_data/structured3d/move_data.py
 python prepare_data/structured3d/move_annotation.py
 ```

prepare_data/README.md

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# Directory containing the zip files; update this as needed.
+S3D_DOWNLOAD_DIR="/Users/gauravpradeep/CrossOver_ScaleUp"
+
+# Find and sort all Structured3D_*.zip files in the directory
+cd "$S3D_DOWNLOAD_DIR" || exit 1
+
+for zip_file in Structured3D_*.zip; do
+    # Skip if no files match
+    [ -e "$zip_file" ] || continue
+    extract_dir="${zip_file%.zip}"
+    echo "Extracting $zip_file..."
+    mkdir -p "$extract_dir"
+    unzip -q "$zip_file" -d "$extract_dir"
+done
+
+echo "Done extracting all zips."