diff --git a/twain/twain/huagaods.cpp b/twain/twain/huagaods.cpp
index 90499bc..2f8fe13 100644
--- a/twain/twain/huagaods.cpp
+++ b/twain/twain/huagaods.cpp
@@ -2957,6 +2957,8 @@ void huagao_ds::init_support_caps(void)
 		log_attr_access((int)CapType::DoubleFeedDetection, (int)msg);
 		if (Msg::Set == msg) {
 			auto val = data.currentItem<CapType::DoubleFeedDetection>();
+			auto type = data.itemType();
+			load_sane_util::to_log(1, L"DoubleFeedDetection parameter is %d\r\n", (int)type);
 			int ret = SCANNER_ERR_OK;
 			bool enable = val == DoubleFeedDetection::Ultrasonic;
 			if (double_check_mode_ == DOUBLE_CHECK_ULTRASONIC)
@@ -3053,26 +3055,26 @@ void huagao_ds::init_support_caps(void)
 		};
 	}
 
-	if (SANE_ID(ex_is_paper_auto_crop) > 0)
-	{
-		m_query[(CapType)(CapTypeEx::CAP_TYPE_EX_CROP_MODEL)] = msgSupportGetAllSetReset;
-		m_caps[(CapType)(CapTypeEx::CAP_TYPE_EX_CROP_MODEL)] = [this](Msg msg, Capability& data)->Result {
-			log_attr_access((int)CapTypeEx::CAP_TYPE_EX_CROP_MODEL, (int)msg);
-			std::vector<bool>	all;
-			GET_SANE_OPT_EX(bool, scanner_, ex_is_paper_auto_crop, NULL, &all);
-			if (Msg::Set == msg || Msg::Reset == msg)
-			{
-				bool def = all[sane_opts::RANGE_POS_DEFAULT];
-				if (Msg::Set == msg)
-					def = data.currentItem<BYTE>() == 1;
-				int ret = SCANNER_ERR_OK;
-				SET_SANE_OPT_EX(ret, scanner_, ex_is_paper_auto_crop, &def);
-				return ret == SCANNER_ERR_OK ? success() : badValue();
-			}
-			BYTE crop = all[sane_opts::RANGE_POS_CURRENT];
-			return CapSupGetAll<BYTE, bool, CapType::IAutomaticCropUsesFrame>(msg, data, crop, all[sane_opts::RANGE_POS_DEFAULT]);
-		};
-	}
+	//if (SANE_ID(ex_is_paper_auto_crop) > 0)
+	//{
+	//	m_query[(CapType)(CapTypeEx::CAP_TYPE_EX_CROP_MODEL)] = msgSupportGetAllSetReset;
+	//	m_caps[(CapType)(CapTypeEx::CAP_TYPE_EX_CROP_MODEL)] = [this](Msg msg, Capability& data)->Result {
+	//		log_attr_access((int)CapTypeEx::CAP_TYPE_EX_CROP_MODEL, (int)msg);
+	//		std::vector<bool>	all;
+	//		GET_SANE_OPT_EX(bool, scanner_, ex_is_paper_auto_crop, NULL, &all);
+	//		if (Msg::Set == msg || Msg::Reset == msg)
+	//		{
+	//			bool def = all[sane_opts::RANGE_POS_DEFAULT];
+	//			if (Msg::Set == msg)
+	//				def = data.currentItem<BYTE>() == 1;
+	//			int ret = SCANNER_ERR_OK;
+	//			SET_SANE_OPT_EX(ret, scanner_, ex_is_paper_auto_crop, &def);
+	//			return ret == SCANNER_ERR_OK ? success() : badValue();
+	//		}
+	//		BYTE crop = all[sane_opts::RANGE_POS_CURRENT];
+	//		return CapSupGetAll<BYTE, bool, CapType::IAutomaticCropUsesFrame>(msg, data, crop, all[sane_opts::RANGE_POS_DEFAULT]);
+	//	};
+	//}
 
 	if (SANE_ID(ex_multiout_type) > 0)
 	{
@@ -3303,6 +3305,7 @@ void huagao_ds::init_support_caps(void)
 	SET_EXISTING_EXTENSION(ANTI_NOISE_LEVEL, CapTypeEx::CAP_TYPE_EX_ANTI_NOISE);
 	SET_EXISTING_EXTENSION(THRESHOLD, CapTypeEx::CAP_TYPE_EX_THRESHOLD);
 	//SET_EXISTING_EXTENSION(RID_HOLE, CapTypeEx::CAP_TYPE_EX_FILL_HOLE);
+	SET_EXISTING_EXTENSION(DARK_SAMPLE, CapTypeEx::CAP_TYPE_EX_CROP_MODEL);
 	SET_EXISTING_EXTENSION(NOISE_OPTIMIZE, CapTypeEx::CAP_TYPE_EX_DETACH_NOISE);
 	SET_EXISTING_EXTENSION(NOISE_SIZE, CapTypeEx::CAP_TYPE_EX_DETACH_NOISE_THRESHOLD);
 	SET_EXISTING_EXTENSION(RID_MULTIOUT_RED, CapTypeEx::CAP_TYPE_EX_RID_RED);