From 2b3261eae270fd6ddc711680970b8707345f0656 Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Fri, 13 Feb 2026 13:48:05 +0100
Subject: Add --export-only option to train_cnn_v2_full.sh

Allows exporting weights from a checkpoint without training or validation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
---
 scripts/train_cnn_v2_full.sh | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

(limited to 'scripts/train_cnn_v2_full.sh')

diff --git a/scripts/train_cnn_v2_full.sh b/scripts/train_cnn_v2_full.sh
index 5a4e55e..99c104a 100755
--- a/scripts/train_cnn_v2_full.sh
+++ b/scripts/train_cnn_v2_full.sh
@@ -7,12 +7,14 @@
 #   (none)                    Run complete pipeline: train → export → build → validate
 #   --validate                Validate only (skip training, use existing weights)
 #   --validate CHECKPOINT     Validate with specific checkpoint file
+#   --export-only CHECKPOINT  Export weights only (skip training, build, validation)
 #   --help                    Show this help message
 #
 # Examples:
 #   ./train_cnn_v2_full.sh
 #   ./train_cnn_v2_full.sh --validate
 #   ./train_cnn_v2_full.sh --validate checkpoints/checkpoint_epoch_50.pth
+#   ./train_cnn_v2_full.sh --export-only checkpoints/checkpoint_epoch_100.pth
 
 set -e
 
@@ -22,13 +24,22 @@ cd "$PROJECT_ROOT"
 # Parse arguments
 VALIDATE_ONLY=false
 VALIDATE_CHECKPOINT=""
+EXPORT_ONLY=false
+EXPORT_CHECKPOINT=""
 
 if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
     head -20 "$0" | grep "^#" | grep -v "^#!/" | sed 's/^# *//'
     exit 0
 fi
 
-if [ "$1" = "--validate" ]; then
+if [ "$1" = "--export-only" ]; then
+    EXPORT_ONLY=true
+    if [ -z "$2" ]; then
+        echo "Error: --export-only requires a checkpoint file argument"
+        exit 1
+    fi
+    EXPORT_CHECKPOINT="$2"
+elif [ "$1" = "--validate" ]; then
     VALIDATE_ONLY=true
     if [ -n "$2" ]; then
         VALIDATE_CHECKPOINT="$2"
@@ -56,6 +67,31 @@ DETECTOR="harris"
 KERNEL_SIZES="3,3,3"  # Comma-separated per-layer kernel sizes
 NUM_LAYERS=3
 
+# Handle export-only mode
+if [ "$EXPORT_ONLY" = true ]; then
+    echo "=== CNN v2 Export Weights Only ==="
+    echo "Checkpoint: $EXPORT_CHECKPOINT"
+    echo ""
+
+    if [ ! -f "$EXPORT_CHECKPOINT" ]; then
+        echo "Error: Checkpoint file not found: $EXPORT_CHECKPOINT"
+        exit 1
+    fi
+
+    python3 training/export_cnn_v2_weights.py "$EXPORT_CHECKPOINT" \
+      --output-weights workspaces/main/weights/cnn_v2_weights.bin
+
+    if [ $? -ne 0 ]; then
+        echo "Error: Export failed"
+        exit 1
+    fi
+
+    echo ""
+    echo "=== Export Complete ==="
+    echo "Output: workspaces/main/weights/cnn_v2_weights.bin"
+    exit 0
+fi
+
 if [ "$VALIDATE_ONLY" = true ]; then
     echo "=== CNN v2 Validation Only ==="
     echo "Skipping training, using existing weights"
-- 
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