From d5a5f8264a7d79a5d0e4f94ce0e92ed738d42668 Mon Sep 17 00:00:00 2001
From: syan <lsy17096535@users.noreply.github.com>
Date: Wed, 11 Dec 2019 10:30:13 +0800
Subject: [PATCH] Update PlateDetection.cpp

---
 Prj-Linux/lpr/src/PlateDetection.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Prj-Linux/lpr/src/PlateDetection.cpp b/Prj-Linux/lpr/src/PlateDetection.cpp
index a25f4db..9d0e6e2 100644
--- a/Prj-Linux/lpr/src/PlateDetection.cpp
+++ b/Prj-Linux/lpr/src/PlateDetection.cpp
@@ -11,6 +11,8 @@ namespace pr{
         std::vector<cv::Rect> platesRegions;
         cv::Size minSize(min_w,min_w/4);
         cv::Size maxSize(max_w,max_w/4);
+        if (&processImage == NULL)
+            return;
         cascade.detectMultiScale( processImage, platesRegions,
                                   1.1, 3, cv::CASCADE_SCALE_IMAGE,minSize,maxSize);
         for(auto plate:platesRegions)