690605:1056 ADR-034-134 #10.6 [skip CI]
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@@ -81,7 +81,6 @@ USE_SMART_CLEANING = os.getenv("TESSERACT_SMART_CLEAN", "true").lower() == "true
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logger.info(f"Tesseract OCR Sidecar initialized (lang={OCR_LANG}, config={TESSERACT_CONFIG}, aggressive={USE_AGGRESSIVE_PREPROCESSING}, smart_clean={USE_SMART_CLEANING})")
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def filter_ocr_noise(text: str) -> str:
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"""Filter ขยะ OCR เช่น บรรทัดสั้น/สัญลักษณ์ที่ไม่มีความหมาย"""
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lines = text.split("\n")
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@@ -120,7 +119,6 @@ def crop_header_footer(pil_image: Image.Image, top_ratio: float = 0.10, bottom_r
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cropped = pil_image.crop((0, top_crop, width, height - bottom_crop))
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return cropped
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def preprocess_image(pil_image: Image.Image) -> Image.Image:
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"""Preprocess image ด้วย OpenCV เพื่อเพิ่มความแม่นยำ OCR (แบบธรรมชาติ)"""
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# แปลง PIL Image เป็น numpy array (OpenCV format)
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@@ -136,7 +134,6 @@ def preprocess_image(pil_image: Image.Image) -> Image.Image:
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# แปลงกลับเป็น PIL Image
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return Image.fromarray(denoised)
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def preprocess_image_aggressive(pil_image: Image.Image) -> Image.Image:
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"""
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Aggressive preprocessing (Option 2) — ลด hallucination โดย:
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@@ -178,7 +175,6 @@ def preprocess_image_aggressive(pil_image: Image.Image) -> Image.Image:
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logger.info(f"[PREPROCESS] Aggressive: Otsu threshold + morphology applied")
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return Image.fromarray(morph)
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def clean_ocr_output(text: str) -> str:
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"""
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Smart post-processing (Option 3) — ลบ Tesseract hallucination โดย:
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@@ -220,13 +216,11 @@ def clean_ocr_output(text: str) -> str:
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logger.info(f"[CLEAN] Input {len(lines)} lines → {len(cleaned)} lines")
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return result
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class OcrRequest(BaseModel):
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pdfPath: str
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maxPages: Optional[int] = None
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engine: Optional[str] = None
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class OcrResponse(BaseModel):
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text: str
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ocrUsed: bool
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@@ -234,7 +228,6 @@ class OcrResponse(BaseModel):
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charCount: int
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engineUsed: str
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@app.get("/health")
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def health():
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return {
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@@ -246,7 +239,6 @@ def health():
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"smartCleaning": USE_SMART_CLEANING,
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}
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# alias map สำหรับ engine name เก่า → canonical name
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_ENGINE_ALIASES: dict[str, str] = {
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"typhoon-ocr1.5-3b": "typhoon-np-dms-ocr",
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@@ -254,7 +246,6 @@ _ENGINE_ALIASES: dict[str, str] = {
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"typhoon_ocr": "typhoon-np-dms-ocr",
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}
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def _process_pdf_doc(doc: fitz.Document, selected_engine: str, max_pages: int, typhoon_options: dict = {}) -> OcrResponse:
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"""ประมวลผล fitz.Document ด้วย engine ที่เลือก — shared logic สำหรับ /ocr และ /ocr-upload"""
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selected_engine = _ENGINE_ALIASES.get(selected_engine, selected_engine)
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@@ -333,106 +324,6 @@ def _process_pdf_doc(doc: fitz.Document, selected_engine: str, max_pages: int, t
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engineUsed="tesseract",
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)
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def clean_typhoon_output(text: str) -> str:
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"""ลบ prompt และ SYSTEM instruction ที่อาจติดมาใน Typhoon OCR output"""
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lines = text.split("\n")
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cleaned = []
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for line in lines:
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stripped = line.strip()
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# ลบ prompt ที่เราส่งไป
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if stripped == "Extract all text from this image.":
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continue
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# ลบ SYSTEM instruction ที่อาจ leak มา (match ทั้ง Thai และ English)
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if stripped.startswith("You are an expert in structuring Thai documents"):
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continue
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if stripped.startswith("คุณคือระบบ AI ผู้เชี่ยวชาญด้านการวิเคราะห์"):
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continue
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if stripped.startswith("Task:"):
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continue
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if stripped.startswith("Output Rules:"):
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continue
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if stripped.startswith("Formatting:"):
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continue
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if stripped.startswith("Guidelines:"):
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continue
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if stripped.startswith("- Return ONLY"):
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continue
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if stripped.startswith("- Input is raw OCR"):
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continue
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if stripped.startswith("- Extract and identify"):
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continue
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if stripped.startswith("- Summarize the key"):
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continue
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if stripped.startswith("- Do NOT create"):
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continue
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if stripped.startswith("- Do NOT guess"):
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continue
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if stripped.startswith("- If information is incomplete"):
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continue
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if stripped.startswith("- Include ALL information"):
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continue
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if stripped.startswith("- Preserve document structure"):
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continue
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if stripped.startswith("- Do NOT add explanations"):
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continue
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if stripped.startswith("- Do NOT include any explanation"):
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continue
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if stripped.startswith("- You must include all information"):
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continue
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if stripped.startswith("- Tables:"):
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continue
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if stripped.startswith("- Math:"):
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continue
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if stripped.startswith("- Figures:"):
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continue
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if stripped.startswith("- Pages:"):
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continue
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if stripped.startswith("- Boxes:"):
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continue
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if stripped.startswith("- Unclear:"):
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continue
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if stripped.startswith("- Signatures/Stamps:"):
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continue
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if stripped.startswith("Return ONLY the specified JSON"):
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continue
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if stripped.startswith("Formatting Rules:"):
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continue
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if stripped.startswith("- Equations:"):
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continue
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if stripped.startswith("- Images/Charts/Diagrams:"):
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continue
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if stripped.startswith("- Page Numbers:"):
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continue
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if stripped.startswith("- Checkboxes:"):
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continue
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if stripped.startswith("Instructions:"):
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continue
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if stripped.startswith("- Only return the clean Markdown"):
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continue
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if stripped.startswith("- Wrap any clearly defined visual areas"):
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continue
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if stripped.startswith("Describe the image's main elements"):
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continue
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if stripped.startswith("Describe in Thai"):
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continue
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if stripped.startswith("(e.g., <page_number>"):
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continue
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# ลบ common instruction markers
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if stripped in ["---", "```", "```markdown", "```text", "```json"]:
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continue
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cleaned.append(line)
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result = "\n".join(cleaned).strip()
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logger.info(f"[CLEAN] Typhoon output: {len(text)} → {len(result)} chars")
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return result
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def process_with_typhoon_ocr(pil_image: Image.Image, options_override: dict = {}) -> str:
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"""เรียก Typhoon OCR ผ่าน Ollama — ใช้ SYSTEM ใน Modelfile เป็น instruction หลัก; options_override ยัง override ค่า Modelfile ได้"""
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model_name = TYPHOON_OCR_MODEL
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@@ -450,7 +341,7 @@ def process_with_typhoon_ocr(pil_image: Image.Image, options_override: dict = {}
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}
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payload = {
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"model": model_name,
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"prompt": "Extract all text from this image.",
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"prompt": "", # SYSTEM instruction ใน Modelfile จัดการทั้งหมด
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"images": [image_base64],
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"stream": False,
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"options": options,
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@@ -472,9 +363,7 @@ def process_with_typhoon_ocr(pil_image: Image.Image, options_override: dict = {}
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logger.warning(
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f"[DIAG] Ollama returned empty response — full response keys: {list(data.keys())}"
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)
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# ลบ prompt/SYSTEM instruction ที่อาจติดมา (safety net)
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return clean_typhoon_output(result_text)
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return result_text
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@app.post("/ocr", response_model=OcrResponse, dependencies=[Depends(get_api_key)])
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def ocr_extract(req: OcrRequest):
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@@ -490,7 +379,6 @@ def ocr_extract(req: OcrRequest):
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raise HTTPException(status_code=422, detail=f"เปิดไฟล์ PDF ล้มเหลว: {e}")
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return _process_pdf_doc(doc, selected_engine, max_pages)
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@app.post("/ocr-upload", response_model=OcrResponse, dependencies=[Depends(get_api_key)])
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def ocr_upload(
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file: UploadFile = File(...),
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@@ -519,15 +407,12 @@ def ocr_upload(
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logger.info(f"OCR upload: {file.filename} engine={selected_engine} options={typhoon_options or 'modelfile-defaults'}")
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return _process_pdf_doc(doc, selected_engine, max_pages, typhoon_options)
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class NormalizeRequest(BaseModel):
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text: str
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class NormalizeResponse(BaseModel):
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normalized: str
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@app.post("/normalize", response_model=NormalizeResponse, dependencies=[Depends(get_api_key)])
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def normalize_text(req: NormalizeRequest):
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"""Normalize Thai text ด้วย PyThaiNLP สำหรับ rag-thai-preprocess queue"""
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@@ -541,7 +426,6 @@ def normalize_text(req: NormalizeRequest):
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logger.warning(f"Thai normalize failed, returning raw text: {e}")
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return NormalizeResponse(normalized=req.text)
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if __name__ == "__main__":
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import uvicorn
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port = int(os.getenv("OCR_PORT", "8765"))
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@@ -5,6 +5,7 @@ PARAMETER num_predict 4096
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PARAMETER temperature 0.1
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PARAMETER top_p 0.1
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PARAMETER repeat_penalty 1.1
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PARAMETER stop "\n\n\n"
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SYSTEM """You are an expert in structuring Thai documents
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