diff --git a/code/base/test_base.cpp b/code/base/test_base.cpp
index c007464..050d3d3 100644
--- a/code/base/test_base.cpp
+++ b/code/base/test_base.cpp
@@ -872,27 +872,46 @@ public:
 	/* 扫描图像质量确认 */
 	int test_image_quality(void *data)
 	{
+		if (!data)
+		{
+			return SCANNER_ERR_DATA_DAMAGED;
+		}
+		unsigned int len = 0;
+		int ret = SCANNER_ERR_OK;
+
+		ret = helper_->io_control(IO_CTRL_CODE_SET_DPI, data, &len);
+		if (ret != SCANNER_ERR_OK)
+		{
+			return -1;
+		}
 		return helper_->io_control(IO_CTRL_CODE_GET_IMAGE, NULL, NULL);
 	}
 	/* 获取自动计算畸变值 */
 	int test_get_auto_distortion(void *data)
 	{
+		if (!data )
+		{
+			return SCANNER_ERR_DATA_DAMAGED;
+		}
 		int ret = SCANNER_ERR_OK, 
 			val = 0;
 		SANE_Bool type = true;
 		unsigned int len = sizeof(SANE_Bool),
 					llen = sizeof(int);
+		ret = helper_->io_control(IO_CTRL_CODE_SET_DPI, &data, &len);
+
 		ret = helper_->io_control(IO_CTRL_CODE_SET_DISTORTION_IMAGE, &type, &len);
 		if (ret != SCANNER_ERR_OK)
 		{
 			return ret;
 		}
 		int cnt = 0;
+		SANE_DISTORTION_VAL dis;
 		while (ret == SCANNER_ERR_OK)
 		{
 			if (is_distortion_get_image )
 			{
-				ret = helper_->io_control(IO_CTRL_CODE_GET_DISTORTION_CHECK_VAL, &val, &llen);
+				ret = helper_->io_control(IO_CTRL_CODE_GET_DISTORTION_CHECK_VAL, &dis, &llen);
 				break;
 			}
 			else if (cnt == 10)
@@ -903,10 +922,9 @@ public:
 			Sleep(1000);
 			cnt++;
 		}
-		if (val > 0)
+		if (dis.h > 0)
 		{
-			float f = *(float*)&val;
-			helper_->test_callback(set_test_name_.c_str(), ui_helper::TEST_EVENT_DISTORTION_VAL, (void *)&f, true);
+			helper_->test_callback(set_test_name_.c_str(), ui_helper::TEST_EVENT_DISTORTION_VAL, (void *)&dis, true);
 		}
 		else
 		{