From fe1d3b08cca9b0c86aa20a759bae883ddc0defb7 Mon Sep 17 00:00:00 2001
From: Chandler Supple <chandler.supple@gmail.com>
Date: Thu, 30 Jan 2025 10:50:11 -0800
Subject: [PATCH 1/2] Added auto mode

---
 .../stitch_ocr_detections/v1.py               | 28 ++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py b/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py
index 6aaed08497..bd8bfc7779 100644
--- a/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py
+++ b/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py
@@ -50,6 +50,8 @@
   
     * **"vertical_bottom_to_top"**: Vertical reading from bottom to top ⬆️
 
+    * **"auto"**: Automatically detects the reading direction based on the spatial arrangement of text elements.
+
 #### Why Use This Transformation?
 
 This is especially useful for:
@@ -109,10 +111,11 @@ class BlockManifest(WorkflowBlockManifest):
         "right_to_left",
         "vertical_top_to_bottom",
         "vertical_bottom_to_top",
+        "auto",
     ] = Field(
         title="Reading Direction",
         description="The direction of the text in the image.",
-        examples=["right_to_left"],
+        examples=["right_to_left", "auto"],
         json_schema_extra={
             "values_metadata": {
                 "left_to_right": {
@@ -131,6 +134,10 @@ class BlockManifest(WorkflowBlockManifest):
                     "name": "Bottom To Top (Vertical)",
                     "description": "Vertical reading from bottom to top",
                 },
+                "auto": {
+                    "name": "Auto",
+                    "description": "Automatically detect the reading direction based on text arrangement.",
+                },
             }
         },
     )
@@ -167,6 +174,23 @@ def get_execution_engine_compatibility(cls) -> Optional[str]:
         return ">=1.0.0,<2.0.0"
 
 
+def detect_reading_direction(detections: sv.Detections) -> str:
+    if len(detections) == 0:
+        return "left_to_right"
+
+    xyxy = detections.xyxy
+    widths = xyxy[:, 2] - xyxy[:, 0]
+    heights = xyxy[:, 3] - xyxy[:, 1]
+
+    avg_width = np.mean(widths)
+    avg_height = np.mean(heights)
+
+    if avg_width > avg_height:
+        return "left_to_right"
+    else:
+        return "vertical_top_to_bottom"
+
+
 class StitchOCRDetectionsBlockV1(WorkflowBlock):
     @classmethod
     def get_manifest(cls) -> Type[WorkflowBlockManifest]:
@@ -178,6 +202,8 @@ def run(
         reading_direction: str,
         tolerance: int,
     ) -> BlockResult:
+        if reading_direction == "auto":
+            reading_direction = detect_reading_direction(predictions[0])
         return [
             stitch_ocr_detections(
                 detections=detections,

From 4da3187e39bd01266f2ac6025ed320c8cc9ef0ee Mon Sep 17 00:00:00 2001
From: Chandler Supple <chandler.supple@gmail.com>
Date: Thu, 30 Jan 2025 10:52:51 -0800
Subject: [PATCH 2/2] Removed example

---
 .../core_steps/transformations/stitch_ocr_detections/v1.py      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py b/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py
index bd8bfc7779..8201f60418 100644
--- a/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py
+++ b/inference/core/workflows/core_steps/transformations/stitch_ocr_detections/v1.py
@@ -115,7 +115,7 @@ class BlockManifest(WorkflowBlockManifest):
     ] = Field(
         title="Reading Direction",
         description="The direction of the text in the image.",
-        examples=["right_to_left", "auto"],
+        examples=["right_to_left"],
         json_schema_extra={
             "values_metadata": {
                 "left_to_right": {