690605:1056 ADR-034-134 #10.6 [skip CI]
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This commit is contained in:
2026-06-05 10:56:42 +07:00
parent eae94cf1f3
commit 661710f349
2 changed files with 3 additions and 118 deletions
@@ -81,7 +81,6 @@ USE_SMART_CLEANING = os.getenv("TESSERACT_SMART_CLEAN", "true").lower() == "true
logger.info(f"Tesseract OCR Sidecar initialized (lang={OCR_LANG}, config={TESSERACT_CONFIG}, aggressive={USE_AGGRESSIVE_PREPROCESSING}, smart_clean={USE_SMART_CLEANING})")
def filter_ocr_noise(text: str) -> str:
"""Filter ขยะ OCR เช่น บรรทัดสั้น/สัญลักษณ์ที่ไม่มีความหมาย"""
lines = text.split("\n")
@@ -120,7 +119,6 @@ def crop_header_footer(pil_image: Image.Image, top_ratio: float = 0.10, bottom_r
cropped = pil_image.crop((0, top_crop, width, height - bottom_crop))
return cropped
def preprocess_image(pil_image: Image.Image) -> Image.Image:
"""Preprocess image ด้วย OpenCV เพื่อเพิ่มความแม่นยำ OCR (แบบธรรมชาติ)"""
# แปลง PIL Image เป็น numpy array (OpenCV format)
@@ -136,7 +134,6 @@ def preprocess_image(pil_image: Image.Image) -> Image.Image:
# แปลงกลับเป็น PIL Image
return Image.fromarray(denoised)
def preprocess_image_aggressive(pil_image: Image.Image) -> Image.Image:
"""
Aggressive preprocessing (Option 2) — ลด hallucination โดย:
@@ -178,7 +175,6 @@ def preprocess_image_aggressive(pil_image: Image.Image) -> Image.Image:
logger.info(f"[PREPROCESS] Aggressive: Otsu threshold + morphology applied")
return Image.fromarray(morph)
def clean_ocr_output(text: str) -> str:
"""
Smart post-processing (Option 3) — ลบ Tesseract hallucination โดย:
@@ -220,13 +216,11 @@ def clean_ocr_output(text: str) -> str:
logger.info(f"[CLEAN] Input {len(lines)} lines → {len(cleaned)} lines")
return result
class OcrRequest(BaseModel):
pdfPath: str
maxPages: Optional[int] = None
engine: Optional[str] = None
class OcrResponse(BaseModel):
text: str
ocrUsed: bool
@@ -234,7 +228,6 @@ class OcrResponse(BaseModel):
charCount: int
engineUsed: str
@app.get("/health")
def health():
return {
@@ -246,7 +239,6 @@ def health():
"smartCleaning": USE_SMART_CLEANING,
}
# alias map สำหรับ engine name เก่า → canonical name
_ENGINE_ALIASES: dict[str, str] = {
"typhoon-ocr1.5-3b": "typhoon-np-dms-ocr",
@@ -254,7 +246,6 @@ _ENGINE_ALIASES: dict[str, str] = {
"typhoon_ocr": "typhoon-np-dms-ocr",
}
def _process_pdf_doc(doc: fitz.Document, selected_engine: str, max_pages: int, typhoon_options: dict = {}) -> OcrResponse:
"""ประมวลผล fitz.Document ด้วย engine ที่เลือก — shared logic สำหรับ /ocr และ /ocr-upload"""
selected_engine = _ENGINE_ALIASES.get(selected_engine, selected_engine)
@@ -333,106 +324,6 @@ def _process_pdf_doc(doc: fitz.Document, selected_engine: str, max_pages: int, t
engineUsed="tesseract",
)
def clean_typhoon_output(text: str) -> str:
"""ลบ prompt และ SYSTEM instruction ที่อาจติดมาใน Typhoon OCR output"""
lines = text.split("\n")
cleaned = []
for line in lines:
stripped = line.strip()
# ลบ prompt ที่เราส่งไป
if stripped == "Extract all text from this image.":
continue
# ลบ SYSTEM instruction ที่อาจ leak มา (match ทั้ง Thai และ English)
if stripped.startswith("You are an expert in structuring Thai documents"):
continue
if stripped.startswith("คุณคือระบบ AI ผู้เชี่ยวชาญด้านการวิเคราะห์"):
continue
if stripped.startswith("Task:"):
continue
if stripped.startswith("Output Rules:"):
continue
if stripped.startswith("Formatting:"):
continue
if stripped.startswith("Guidelines:"):
continue
if stripped.startswith("- Return ONLY"):
continue
if stripped.startswith("- Input is raw OCR"):
continue
if stripped.startswith("- Extract and identify"):
continue
if stripped.startswith("- Summarize the key"):
continue
if stripped.startswith("- Do NOT create"):
continue
if stripped.startswith("- Do NOT guess"):
continue
if stripped.startswith("- If information is incomplete"):
continue
if stripped.startswith("- Include ALL information"):
continue
if stripped.startswith("- Preserve document structure"):
continue
if stripped.startswith("- Do NOT add explanations"):
continue
if stripped.startswith("- Do NOT include any explanation"):
continue
if stripped.startswith("- You must include all information"):
continue
if stripped.startswith("- Tables:"):
continue
if stripped.startswith("- Math:"):
continue
if stripped.startswith("- Figures:"):
continue
if stripped.startswith("- Pages:"):
continue
if stripped.startswith("- Boxes:"):
continue
if stripped.startswith("- Unclear:"):
continue
if stripped.startswith("- Signatures/Stamps:"):
continue
if stripped.startswith("Return ONLY the specified JSON"):
continue
if stripped.startswith("Formatting Rules:"):
continue
if stripped.startswith("- Equations:"):
continue
if stripped.startswith("- Images/Charts/Diagrams:"):
continue
if stripped.startswith("- Page Numbers:"):
continue
if stripped.startswith("- Checkboxes:"):
continue
if stripped.startswith("Instructions:"):
continue
if stripped.startswith("- Only return the clean Markdown"):
continue
if stripped.startswith("- Wrap any clearly defined visual areas"):
continue
if stripped.startswith("Describe the image's main elements"):
continue
if stripped.startswith("Describe in Thai"):
continue
if stripped.startswith("(e.g., <page_number>"):
continue
# ลบ common instruction markers
if stripped in ["---", "```", "```markdown", "```text", "```json"]:
continue
cleaned.append(line)
result = "\n".join(cleaned).strip()
logger.info(f"[CLEAN] Typhoon output: {len(text)}{len(result)} chars")
return result
def process_with_typhoon_ocr(pil_image: Image.Image, options_override: dict = {}) -> str:
"""เรียก Typhoon OCR ผ่าน Ollama — ใช้ SYSTEM ใน Modelfile เป็น instruction หลัก; options_override ยัง override ค่า Modelfile ได้"""
model_name = TYPHOON_OCR_MODEL
@@ -450,7 +341,7 @@ def process_with_typhoon_ocr(pil_image: Image.Image, options_override: dict = {}
}
payload = {
"model": model_name,
"prompt": "Extract all text from this image.",
"prompt": "", # SYSTEM instruction ใน Modelfile จัดการทั้งหมด
"images": [image_base64],
"stream": False,
"options": options,
@@ -472,9 +363,7 @@ def process_with_typhoon_ocr(pil_image: Image.Image, options_override: dict = {}
logger.warning(
f"[DIAG] Ollama returned empty response — full response keys: {list(data.keys())}"
)
# ลบ prompt/SYSTEM instruction ที่อาจติดมา (safety net)
return clean_typhoon_output(result_text)
return result_text
@app.post("/ocr", response_model=OcrResponse, dependencies=[Depends(get_api_key)])
def ocr_extract(req: OcrRequest):
@@ -490,7 +379,6 @@ def ocr_extract(req: OcrRequest):
raise HTTPException(status_code=422, detail=f"เปิดไฟล์ PDF ล้มเหลว: {e}")
return _process_pdf_doc(doc, selected_engine, max_pages)
@app.post("/ocr-upload", response_model=OcrResponse, dependencies=[Depends(get_api_key)])
def ocr_upload(
file: UploadFile = File(...),
@@ -519,15 +407,12 @@ def ocr_upload(
logger.info(f"OCR upload: {file.filename} engine={selected_engine} options={typhoon_options or 'modelfile-defaults'}")
return _process_pdf_doc(doc, selected_engine, max_pages, typhoon_options)
class NormalizeRequest(BaseModel):
text: str
class NormalizeResponse(BaseModel):
normalized: str
@app.post("/normalize", response_model=NormalizeResponse, dependencies=[Depends(get_api_key)])
def normalize_text(req: NormalizeRequest):
"""Normalize Thai text ด้วย PyThaiNLP สำหรับ rag-thai-preprocess queue"""
@@ -541,7 +426,6 @@ def normalize_text(req: NormalizeRequest):
logger.warning(f"Thai normalize failed, returning raw text: {e}")
return NormalizeResponse(normalized=req.text)
if __name__ == "__main__":
import uvicorn
port = int(os.getenv("OCR_PORT", "8765"))
@@ -5,6 +5,7 @@ PARAMETER num_predict 4096
PARAMETER temperature 0.1
PARAMETER top_p 0.1
PARAMETER repeat_penalty 1.1
PARAMETER stop "\n\n\n"
SYSTEM """You are an expert in structuring Thai documents