diff --git a/CMakeLists.txt b/CMakeLists.txt
index a23698d..341d96e 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,11 +22,13 @@ add_library(bpocrapi SHARED ${OCR_SRC})
 
 target_compile_definitions(bpocrapi PUBLIC -D_BPOCR_LIB)
 
-
+# test program 
 set(BPOCRTESTSRC api4cpp/bpocrapitest.cpp)
 add_executable(bpocrtest ${BPOCRTESTSRC})
 
 
+#opencv 
+set(OPENCV_LIB opencv_core opencv_imgproc opencv_imgcodecs)
 
 if(WIN32)
 
@@ -36,10 +38,11 @@ elseif(UNIX)
 
 message(STATUS ${CMAKE_CURRENT_SOURCE_DIR}/lib/linux)
 target_link_directories(bpocrapi PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/lib/linux )
-target_link_libraries(bpocrapi onnxruntime opencv_core)
+target_link_libraries(bpocrapi onnxruntime ${OPENCV_LIB})
+
+target_link_directories(bpocrtest PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/lib/linux)
+target_link_libraries(bpocrtest onnxruntime ${OPENCV_LIB} bpocrapi  gomp)
 
-target_link_directories(bpocrtest PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/lib/linux )
-target_link_libraries(bpocrtest onnxruntime opencv_core bpocrapi)
 
 endif()
 
diff --git a/api4cpp/baipiaoocr_api.cpp b/api4cpp/baipiaoocr_api.cpp
index cff4931..c98ceb1 100755
--- a/api4cpp/baipiaoocr_api.cpp
+++ b/api4cpp/baipiaoocr_api.cpp
@@ -4,23 +4,42 @@ extern "C"
 {
 #endif 
 
-	_QM_OCR_API BPHANDLE   BPOcrInit(const char* szDetModel, const char* szClsModel, const char* szRecModel)
+	_QM_OCR_API BPHANDLE   BPOcrInit(const char* szDetModel, const char* szClsModel, const char* szRecModel,const char *szKeyPath, int nThreads)
 	{
 
+		omp_set_num_threads(nThreads);
+		OcrLite * pOcrObj=new OcrLite;
+		if(pOcrObj)
+		{
+			pOcrObj->setNumThread(nThreads);
 
-		return NULL;
+			 pOcrObj->initModels(szDetModel, szClsModel, szRecModel, szKeyPath);
+			 
+			return pOcrObj;
+		}
+		else
+		{
+			return nullptr;
+		}
+		
 	}
 
-	_QM_OCR_API const char*  BPOcrDoOcr(BPHANDLE handle, const char* szImgPath, BOOL bAutoParam)
+	_QM_OCR_API const char*  BPOcrDoOcr(BPHANDLE handle, const char* szImgPath, BOOL bAutoParam,BPOCR_PARAM *pParam)
 	{
 
+		OcrLite * pOcrObj=(	OcrLite *)handle;
+		if(!pOcrObj)
+			return NULL;
 
-		return NULL;
+		return "";
 	}
 
 	_QM_OCR_API void  BPOcrDeinit(BPHANDLE handle)
 	{
 
+		OcrLite * pOcrObj=(	OcrLite *)handle;
+		if(pOcrObj)
+			delete pOcrObj;
 
 
 	}
diff --git a/api4cpp/bpocrapitest.cpp b/api4cpp/bpocrapitest.cpp
index fc15d0f..30004b6 100644
--- a/api4cpp/bpocrapitest.cpp
+++ b/api4cpp/bpocrapitest.cpp
@@ -1,10 +1,24 @@
-#include "../include/precomp.h"
+#include <stdlib.h>
+#include <stdio.h>
 #include "../include/baipiaoocr_api.h"
 
+#define BPOCR_DET_MODEL ""
+#define BPOCR_CLS_MODEL ""
+#define BPOCR_REC_MODEL ""
+#define BPOCR_KEY_PATH  ""
 
-
+#define THREAD_NUM   3
 int main(int argc, char * argv[])
 {
 
+
+    BPHANDLE  Handle= BPOcrInit(BPOCR_DET_MODEL,BPOCR_CLS_MODEL,BPOCR_REC_MODEL,BPOCR_KEY_PATH,THREAD_NUM);
+    if(!Handle)
+    {
+        printf("cannot initialize the OCR Engine.\n");
+        return -1;
+    }
+
+
     return 0;
 }
\ No newline at end of file
diff --git a/include/baipiaoocr_api.h b/include/baipiaoocr_api.h
index b08f933..c91adf7 100755
--- a/include/baipiaoocr_api.h
+++ b/include/baipiaoocr_api.h
@@ -1,3 +1,4 @@
+#pragma once
 #ifdef __cplusplus
 extern "C"
 {
@@ -24,13 +25,24 @@ typedef  char BOOL;
 #define	TRUE	1
 #define	FALSE	0
 
-	_QM_OCR_API BPHANDLE   BPOcrInit(const char * szDetModel, const char * szClsModel, const char * szRecModel);
 
-	_QM_OCR_API const char*  BPOcrDoOcr(BPHANDLE handle, const char* szImgPath, BOOL bAutoParam);
+typedef struct __bpocr_param
+{
+	int nLongsizeLen;
+	float  fClipRate;
+} BPOCR_PARAM;
 
-	_QM_OCR_API void  BPOcrDeinit(BPHANDLE handle);
 
 
+/*
+By default, nThreads should be the number of threads 
+*/
+_QM_OCR_API BPHANDLE   BPOcrInit(const char * szDetModel, const char * szClsModel, const char * szRecModel,const char *szKeyPath,int nThreads);
+
+_QM_OCR_API const char*  BPOcrDoOcr(BPHANDLE handle, const char* szImgPath, BOOL bAutoParam, BPOCR_PARAM *pParam);
+
+_QM_OCR_API void  BPOcrDeinit(BPHANDLE handle);
+
 
 
 
diff --git a/include/precomp.h b/include/precomp.h
index dc99fa2..6909fce 100755
--- a/include/precomp.h
+++ b/include/precomp.h
@@ -1,3 +1,5 @@
 #pragma once
 #include "OcrUtils.h"
-#include "baipiaoocr_api.h"
\ No newline at end of file
+#include "baipiaoocr_api.h"
+#include "omp.h"
+#include "OcrLite.h"
\ No newline at end of file