From 02a4b79f905007c10fad37c0a76db87d28c53a8f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B0=91=E5=8D=BF?= <zhengchi.cntv@gmail.com>
Date: Thu, 11 Dec 2025 21:12:00 +0800
Subject: [PATCH] chore: increase image stitching thresholds to 20/4000px

- MAX_COUNT: 10 -> 20 images
- MAX_HEIGHT: 2000px -> 4000px
- Allows more complete chunk thumbnails for long documents
---
 deepdoc/parser/mineru_parser.py | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/deepdoc/parser/mineru_parser.py b/deepdoc/parser/mineru_parser.py
index 7d2fa0110..3a4e8bf10 100644
--- a/deepdoc/parser/mineru_parser.py
+++ b/deepdoc/parser/mineru_parser.py
@@ -431,24 +431,24 @@ class MinerUParser(RAGFlowPdfParser):
         智能拼接：应用阈值控制
         
         Thresholds:
-        - MAX_COUNT: 最多10张图
-        - MAX_HEIGHT: 总高度不超过2000px
+        - MAX_COUNT: 最多20张图
+        - MAX_HEIGHT: 总高度不超过4000px
         
         Strategies:
         - 数量过多: 均匀采样（保留首尾）
-        - 高度过高: 截断到2000px
+        - 高度过高: 截断到4000px
         - 不缩放图片（保持高清）
         """
-        MAX_COUNT = 10
-        MAX_HEIGHT = 2000
+        MAX_COUNT = 20
+        MAX_HEIGHT = 4000
         GAP = 6
         
-        # 1. 数量控制：如果超过10张，均匀采样
+        # 1. 数量控制：如果超过20张，均匀采样
         if len(images_with_metadata) > MAX_COUNT:
             self.logger.info(f"[MinerU] Too many images ({len(images_with_metadata)}), sampling to {MAX_COUNT}")
             images_with_metadata = self._sample_images_uniformly(images_with_metadata, MAX_COUNT)
         
-        # 2. 高度控制：累加到2000px为止
+        # 2. 高度控制：累加到4000px为止
         trimmed_images = []
         current_height = 0