diff --git a/hgdriver/ImageProcess/ImageApplyAutoCrop.cpp b/hgdriver/ImageProcess/ImageApplyAutoCrop.cpp
index 0a48e2b..20976a7 100644
--- a/hgdriver/ImageProcess/ImageApplyAutoCrop.cpp
+++ b/hgdriver/ImageProcess/ImageApplyAutoCrop.cpp
@@ -96,59 +96,6 @@ void CImageApplyAutoCrop::myWarpAffine(cv::InputArray _src, cv::OutputArray _dst
 		M, interpolation, borderType, borderValue.val);
 }
 
-cv::Scalar CImageApplyAutoCrop::getBackGroudColor(const cv::Mat& image)
-{
-	if (image.channels() == 3)
-	{
-		uchar table[768] = { 0 };
-		int hist_bgr[3][256] = { 0 };
-		int width = image.cols, height = image.rows, bytesPerLine = image.step;
-		memset(table, 255, 768);
-
-		unsigned char* ptr_data = image.data;
-		unsigned char b = 0;
-		for (uint i = 0; i < height; i++, ptr_data += bytesPerLine)
-			for (uint j = 0, x = 0; j < width; j++, x += 3)
-			{
-				b = table[ptr_data[x] + ptr_data[x + 1] + ptr_data[x + 2]];
-				for (uint k = 0; k < 3; k++)
-					hist_bgr[k][ptr_data[x + k] & b]++;
-			}
-
-		int max_vals[3] = { 0 };
-		cv::Scalar max_indexes(0, 0, 0);
-
-		for (uint i = 5; i < 256; i++)
-			for (uint j = 0; j < 3; j++)
-				if (hist_bgr[j][i] > max_vals[j])
-				{
-					max_vals[j] = hist_bgr[j][i];
-					max_indexes[j] = i;
-				}
-
-		return max_indexes;
-	}
-	else
-	{
-		uchar table[256] = { 0 };
-		int hist_bgr[256] = { 0 };
-		int width = image.cols, height = image.rows, bytesPerLine = image.step;
-		memset(table, 255, 256);
-		unsigned char* ptr_data = image.data;
-		unsigned char b = 0;
-		for (uint i = 0; i < height; i++, ptr_data += bytesPerLine)
-			for (uint j = 0, x = 0; j < width; j++, x ++)
-				hist_bgr[ptr_data[x] & table[ptr_data[x]]]++;
-
-		int max_vals = 5;
-		for (uint i = 5; i < 256; i++)
-			if (hist_bgr[i] > hist_bgr[max_vals])
-				max_vals = i;
-
-		return cv::Scalar(max_vals);
-	}
-}
-
 void CImageApplyAutoCrop::autoCrop_desaskew_fillBlank(cv::Mat& src, cv::Mat& dst, bool isAutoCrop, bool isDesaskew, bool isFillBlank, int dWidth, int dHeight,
 	bool isConvex, bool isColorBlank, double threshold, int noise, int indent, bool isNormalCrop, double fx, double fy)
 {
@@ -226,7 +173,9 @@ void CImageApplyAutoCrop::autoCrop_desaskew_fillBlank(cv::Mat& src, cv::Mat& dst
 			boudingRect.width *= FX_FY;
 			boudingRect.height *= FX_FY;
 
-			blankColor = getBackGroudColor(resizeMat(boudingRect));
+			cv::Mat temp_bgc;
+			cv::resize(resizeMat(boudingRect), temp_bgc, cv::Size(200, 200));
+			blankColor = hg::getBackGroundColor(temp_bgc, cv::Mat(), threshold);
 		}
 		else
 			blankColor = cv::Scalar::all(255);
@@ -254,9 +203,9 @@ void CImageApplyAutoCrop::autoCrop_desaskew_fillBlank(cv::Mat& src, cv::Mat& dst
 		int h = rect.size.height;
 		int x = (dst.cols - w) / 2;
 		int y = (dst.rows - h) / 2;
-		dstTri[0] = cv::Point2f(0, h);
-		dstTri[1] = cv::Point2f(0, 0);
-		dstTri[2] = cv::Point2f(w, 0);
+		dstTri[0] = cv::Point2f(x, y + h);
+		dstTri[1] = cv::Point2f(x, y);
+		dstTri[2] = cv::Point2f(x + w, y);
 
 		dstROI = dst(cv::Rect(x, y, w, h) & cv::Rect(0, 0, dst.cols, dst.rows));
 		myWarpAffine(src, dstROI, cv::getAffineTransform(srcTri, dstTri), dstROI.size(), cv::INTER_LINEAR, cv::BORDER_CONSTANT, cv::Scalar::all(0));
diff --git a/hgdriver/ImageProcess/ImageApplyAutoCrop.h b/hgdriver/ImageProcess/ImageApplyAutoCrop.h
index 8c749cd..1f68256 100644
--- a/hgdriver/ImageProcess/ImageApplyAutoCrop.h
+++ b/hgdriver/ImageProcess/ImageApplyAutoCrop.h
@@ -34,7 +34,8 @@
 				 2023/05/15 v1.5.5   优化文稿背景色识别算法。
 				 2023/05/23 v1.5.6	 修复纯黑图找不到外界轮廓会导致崩溃的BUG。
 				 2023/11/02 v1.6	 优化抗噪能力。采用自适应背景色二值化。
- * 版本号：v1.5.6
+				 2023/12/05 v1.6.1	 替换获取背景色方案；修复固定幅面裁切纠偏的坐标计算BUG。
+ * 版本号：v1.6.1
 
  * ====================================================
  */
@@ -115,8 +116,6 @@ public:
 
 private:
 	static void myWarpAffine(cv::InputArray _src, cv::OutputArray _dst, cv::InputArray _M0, cv::Size dsize, int flags, int borderType, const cv::Scalar& borderValue);
-
-	static cv::Scalar getBackGroudColor(const cv::Mat& image);
 private:
 	bool m_isCrop;
 	bool m_isDesaskew;