From 7a3aef5d299f22bd2470f1f774c443aeb1b36127 Mon Sep 17 00:00:00 2001
From: luoliangyi <87842688@qq.com>
Date: Mon, 31 Oct 2022 14:02:14 +0800
Subject: [PATCH] =?UTF-8?q?ocr=E5=A2=9E=E5=8A=A0dpi?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 modules/imgproc/HGOCRTesseract.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/modules/imgproc/HGOCRTesseract.cpp b/modules/imgproc/HGOCRTesseract.cpp
index 7a574fd8..ac555efc 100644
--- a/modules/imgproc/HGOCRTesseract.cpp
+++ b/modules/imgproc/HGOCRTesseract.cpp
@@ -94,6 +94,9 @@ HGResult HGOCRTesseract::ImageOCR(HGImage image, class HGOCRRetImpl** ocrRet)
 	HGBase_GetImageData(image2, &imageData);
 
 	TessBaseAPISetImage(m_baseApi, imageData, imgInfo.width, imgInfo.height, 3, imgInfo.widthStep);
+	HGUInt xDpi, yDpi;
+	HGBase_GetImageDpi(image2, &xDpi, &yDpi);
+	TessBaseAPISetSourceResolution(m_baseApi, (xDpi + yDpi) / 2);
 
 	char *text = TessBaseAPIGetUTF8Text(m_baseApi);
 	if (NULL == text)
@@ -159,6 +162,9 @@ HGResult HGOCRTesseract::ImageTextDirectOCR(HGImage image, HGUInt* direct)
 	HGBase_GetImageData(image2, &imageData);
 
 	TessBaseAPISetImage(m_baseApi, imageData, imgInfo.width, imgInfo.height, 3, imgInfo.widthStep);
+	HGUInt xDpi, yDpi;
+	HGBase_GetImageDpi(image2, &xDpi, &yDpi);
+	TessBaseAPISetSourceResolution(m_baseApi, (xDpi + yDpi) / 2);
 
 	TessPageIterator* iter = TessBaseAPIAnalyseLayout(m_baseApi);
 	if (NULL == iter)