fix cpp inference pre-process

deploy/cpp_infer/include/preprocess_op.h

@@ -51,8 +51,7 @@ public:
 
 class ResizeImg {
 public:
-  virtual void Run(const cv::Mat &img, cv::Mat &resize_img, int max_size_len,
-                   float &ratio_h, float &ratio_w);
+  virtual void Run(const cv::Mat &img, cv::Mat &resize_img, int max_size_len);
 };
 
 } // namespace PaddleClas
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deploy/cpp_infer/src/cls.cpp

@@ -47,15 +47,12 @@ void Classifier::LoadModel(const std::string &model_dir) {
 }
 
 void Classifier::Run(cv::Mat &img) {
-  float ratio_h{};
-  float ratio_w{};
-
   cv::Mat srcimg;
   cv::Mat resize_img;
   img.copyTo(srcimg);
 
-  this->resize_op_.Run(img, resize_img, this->resize_short_size_, ratio_h,
-                       ratio_w);
+  this->resize_op_.Run(img, resize_img, this->resize_short_size_);
+
   this->crop_op_.Run(resize_img, this->crop_size_);
 
   this->normalize_op_.Run(&resize_img, this->mean_, this->scale_,

deploy/cpp_infer/src/preprocess_op.cpp

@@ -25,6 +25,7 @@
 
 #include <cstring>
 #include <fstream>
+#include <math.h>
 #include <numeric>
 
 #include <include/preprocess_op.h>
@@ -68,25 +69,22 @@ void CenterCropImg::Run(cv::Mat &img, const int crop_size) {
   img = img(rect);
 }
 
-void ResizeImg::Run(const cv::Mat &img, cv::Mat &resize_img, int max_size_len,
-                    float &ratio_h, float &ratio_w) {
+void ResizeImg::Run(const cv::Mat &img, cv::Mat &resize_img,
+                    int resize_short_size) {
   int w = img.cols;
   int h = img.rows;
 
   float ratio = 1.f;
   if (h < w) {
-    ratio = float(max_size_len) / float(h);
+    ratio = float(resize_short_size) / float(h);
   } else {
-    ratio = float(max_size_len) / float(w);
+    ratio = float(resize_short_size) / float(w);
   }
 
-  int resize_h = int(float(h) * ratio);
-  int resize_w = int(float(w) * ratio);
+  int resize_h = round(float(h) * ratio);
+  int resize_w = round(float(w) * ratio);
 
   cv::resize(img, resize_img, cv::Size(resize_w, resize_h));
-
-  ratio_h = float(resize_h) / float(h);
-  ratio_w = float(resize_w) / float(w);
 }
 
 } // namespace PaddleClas
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