inference: fix bugs

inference/predictor/seg_predictor.cpp

@@ -125,6 +125,10 @@ namespace PaddleSolution {
 
         int Predictor::native_predict(const std::vector<std::string>& imgs)
         {
+            if (imgs.size() == 0) {
+                LOG(ERROR) << "No image found";
+                return -1;
+            }
             int config_batch_size = _model_config._batch_size;
 
             int channels = _model_config._channels;
@@ -205,6 +209,11 @@ namespace PaddleSolution {
 
         int Predictor::analysis_predict(const std::vector<std::string>& imgs) {
 
+            if (imgs.size() == 0) {
+                LOG(ERROR) << "No image found";
+                return -1;
+            }
+
             int config_batch_size = _model_config._batch_size;
             int channels = _model_config._channels;
             int eval_width = _model_config._resize[0];

inference/utils/seg_conf_parser.h

@@ -28,7 +28,6 @@ namespace PaddleSolution {
             _channels = 0;
             _use_gpu = 0;
             _batch_size = 1;
-            _model_name.clear();
             _model_file_name.clear();
             _model_path.clear();
             _param_file_name.clear();

inference/utils/utils.h

@@ -33,13 +33,11 @@ namespace PaddleSolution {
             }
 
             while ((entry = readdir(dir)) != NULL) {
-                printf("%s\n", entry->d_name);
                 std::string item = entry->d_name;
                 auto ext = strrchr(entry->d_name, '.');
                 if (!ext || std::string(ext) == "." || std::string(ext) == "..") {
                     continue;
                 }
-                printf("%s\n", entry->d_name);
                 if (exts.find(ext) != std::string::npos) {
                     imgs.push_back(path_join(path, entry->d_name));
                 }