Refactor PDF handling and add new scripts. Removed specific PDF files from LFS tracking and replaced with a wildcard for all PDFs. Added a script to convert PDFs to PNGs and created new Jupyter notebooks for drawing and marker detection. Added new charuco PDF files for 410x410 markers.

cvt_all_pdfs.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# Set input folder
+INPUT_DIR="board"
+DPI=100  # Resolution in DPI
+
+# Iterate over all .pdf files in the folder
+for pdf in "$INPUT_DIR"/*.pdf; do
+    # Strip .pdf to get base name
+    base="${pdf%.pdf}"
+    # Convert to PNG
+    magick convert -density "$DPI" "$pdf" "${base}.png"
+    echo "Converted: $pdf → ${base}.png"
+done