diff --git a/model_zoo/official/cv/dpn/infer/mxbase/src/DPN.h b/model_zoo/official/cv/dpn/infer/mxbase/src/DPN.h
index 1ac231dff09..af4caab77c1 100644
--- a/model_zoo/official/cv/dpn/infer/mxbase/src/DPN.h
+++ b/model_zoo/official/cv/dpn/infer/mxbase/src/DPN.h
@@ -1,9 +1,4 @@
-/*
- * Copyright (c) 2021. Huawei Technologies Co., Ltd. All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+* You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
@@ -16,12 +11,11 @@
 
 #ifndef MXBASE_DPN_H
 #define MXBASE_DPN_H
-#include <memory>
-#include <string>
-#include <vector>
 #include <opencv2/opencv.hpp>
+
 #include "MxBase/DvppWrapper/DvppWrapper.h"
 #include "MxBase/ModelInfer/ModelInferenceProcessor.h"
+// #include "ClassPostProcessors/DPN92PostProcess.h"
 #include "ClassPostProcessors/Resnet50PostProcess.h"
 #include "MxBase/Tensor/TensorContext/TensorContext.h"
 
@@ -36,32 +30,31 @@ struct InitParam {
 };
 
 class DPN {
- public:
-  APP_ERROR Init(const InitParam &initParam);
-  APP_ERROR DeInit();
-  APP_ERROR ReadImage(const std::string &imgPath, const cv::Mat &imageMat);
-  APP_ERROR ResizeImage(const cv::Mat &srcImageMat, const cv::Mat &dstImageMat);
-  APP_ERROR CenterCropImage(const cv::Mat &img, const cv::Mat &crop_im);
-  APP_ERROR CVMatToTensorBase(const cv::Mat &imageMat, const MxBase::TensorBase &tensorBase);
-  APP_ERROR Inference(const std::vector<MxBase::TensorBase> &inputs, const std::vector<MxBase::TensorBase> &outputs);
-  APP_ERROR PostProcess(const std::vector<MxBase::TensorBase> &inputs,
-                          const std::vector<std::vector<MxBase::ClassInfo>> &clsInfos);
-  APP_ERROR Process(const std::vector<std::string> &batchImgPaths);
-  // get infer time
-  double GetInferCostMilliSec() const {return inferCostTimeMilliSec;}
+    public:
+        APP_ERROR Init(const InitParam &initParam);
+        APP_ERROR DeInit();
+        APP_ERROR ReadImage(const std::string &imgPath, cv::Mat &imageMat);
+        APP_ERROR ResizeImage(const cv::Mat &srcImageMat, cv::Mat &dstImageMat);
+        APP_ERROR CenterCropImage(const cv::Mat &img, cv::Mat &crop_im);
+        APP_ERROR CVMatToTensorBase(const cv::Mat &imageMat, MxBase::TensorBase &tensorBase);
+        APP_ERROR Inference(const std::vector<MxBase::TensorBase> &inputs, std::vector<MxBase::TensorBase> &outputs);
+        APP_ERROR PostProcess(const std::vector<MxBase::TensorBase> &inputs,
+                              std::vector<std::vector<MxBase::ClassInfo>> &clsInfos);
+        APP_ERROR Process(const std::vector<std::string> &batchImgPaths);
+        // get infer time
+        double GetInferCostMilliSec() const {return inferCostTimeMilliSec;}
 
- private:
-  APP_ERROR SaveResult(const std::vector<std::string> &batchImgPaths,
-                                const std::vector<std::vector<MxBase::ClassInfo>> &batchClsInfos);
-
- private:
-  std::shared_ptr<MxBase::DvppWrapper> dvppWrapper_;
-  std::shared_ptr<MxBase::ModelInferenceProcessor> model_;
-  std::shared_ptr<MxBase::Resnet50PostProcess> post_;
-  MxBase::ModelDesc modelDesc_;
-  uint32_t deviceId_ = 0;
-  // infer time
-  double inferCostTimeMilliSec = 0.0;
+    private:
+        APP_ERROR SaveResult(const std::vector<std::string> &batchImgPaths, const std::vector<std::vector<MxBase::ClassInfo>> &batchClsInfos);
+    private:
+        std::shared_ptr<MxBase::DvppWrapper> dvppWrapper_;
+        std::shared_ptr<MxBase::ModelInferenceProcessor> model_;
+        std::shared_ptr<MxBase::Resnet50PostProcess> post_;
+        MxBase::ModelDesc modelDesc_;
+        uint32_t deviceId_ = 0;
+        // infer time
+        double inferCostTimeMilliSec = 0.0;
 };
 
+
 #endif
diff --git a/model_zoo/official/cv/dpn/infer/mxbase/src/main.cpp b/model_zoo/official/cv/dpn/infer/mxbase/src/main.cpp
index 74644487c3b..c1c96a0a080 100644
--- a/model_zoo/official/cv/dpn/infer/mxbase/src/main.cpp
+++ b/model_zoo/official/cv/dpn/infer/mxbase/src/main.cpp
@@ -23,7 +23,7 @@ namespace {
     const uint32_t BATCH_SIZE = 32;
 }  // namespace
 
-APP_ERROR ScanImages(const std::string &path, const std::vector<std::string> &imgFiles) {
+APP_ERROR ScanImages(const std::string &path, std::vector<std::string> &imgFiles) {
     DIR *dirPtr = opendir(path.c_str());
     if (dirPtr == nullptr) {
         LogError << "opendir failed. dir:" << path;