From c40f3eea862a91624aabe6a629f455adc9065744 Mon Sep 17 00:00:00 2001
From: Jack Yu <455501914@qq.com>
Date: Tue, 1 May 2018 20:29:28 +0800
Subject: [PATCH] Update FastDeskew.cpp

---
 Prj-Linux/lpr/src/FastDeskew.cpp | 27 ++-------------------------
 1 file changed, 2 insertions(+), 25 deletions(-)

diff --git a/Prj-Linux/lpr/src/FastDeskew.cpp b/Prj-Linux/lpr/src/FastDeskew.cpp
index e220257..16c9058 100644
--- a/Prj-Linux/lpr/src/FastDeskew.cpp
+++ b/Prj-Linux/lpr/src/FastDeskew.cpp
@@ -1,5 +1,5 @@
 //
-// Created by 庾金科 on 02/10/2017.
+// Created by Jack Yu on 02/10/2017.
 //
 
 
@@ -51,59 +51,38 @@ namespace pr{
 
     cv::Mat  correctPlateImage(cv::Mat skewPlate,float angle,float maxAngle)
     {
-
         cv::Mat dst;
-
         cv::Size size_o(skewPlate.cols,skewPlate.rows);
-
-
         int extend_padding = 0;
-//        if(angle<0)
-            extend_padding = static_cast<int>(skewPlate.rows*tan(cv::abs(angle)/180* 3.14) );
-//        else
-//            extend_padding = static_cast<int>(skewPlate.rows/tan(cv::abs(angle)/180* 3.14) );
-
-//        std::cout<<"extend:"<<extend_padding<<std::endl;
-
+        extend_padding = static_cast<int>(skewPlate.rows*tan(cv::abs(angle)/180* 3.14) );
         cv::Size size(skewPlate.cols + extend_padding ,skewPlate.rows);
-
         float interval = abs(sin((angle /180) * 3.14)* skewPlate.rows);
-//        std::cout<<interval<<std::endl;
-
         cv::Point2f pts1[4] = {cv::Point2f(0,0),cv::Point2f(0,size_o.height),cv::Point2f(size_o.width,0),cv::Point2f(size_o.width,size_o.height)};
         if(angle>0) {
             cv::Point2f pts2[4] = {cv::Point2f(interval, 0), cv::Point2f(0, size_o.height),
                                    cv::Point2f(size_o.width, 0), cv::Point2f(size_o.width - interval, size_o.height)};
             cv::Mat M  = cv::getPerspectiveTransform(pts1,pts2);
             cv::warpPerspective(skewPlate,dst,M,size);
-
-
         }
         else {
             cv::Point2f pts2[4] = {cv::Point2f(0, 0), cv::Point2f(interval, size_o.height), cv::Point2f(size_o.width-interval, 0),
                                    cv::Point2f(size_o.width, size_o.height)};
             cv::Mat M  = cv::getPerspectiveTransform(pts1,pts2);
             cv::warpPerspective(skewPlate,dst,M,size,cv::INTER_CUBIC);
-
         }
         return  dst;
     }
     cv::Mat fastdeskew(cv::Mat skewImage,int blockSize){
-
-
         const int FILTER_WINDOWS_SIZE = 5;
         std::vector<float> angle_list(180);
         memset(angle_list.data(),0,angle_list.size()*sizeof(int));
-
         cv::Mat bak;
         skewImage.copyTo(bak);
         if(skewImage.channels() == 3)
             cv::cvtColor(skewImage,skewImage,cv::COLOR_RGB2GRAY);
-
         if(skewImage.channels() == 1)
         {
             cv::Mat eigen;
-
             cv::cornerEigenValsAndVecs(skewImage,eigen,blockSize,5);
             for( int j = 0; j < skewImage.rows; j+=blockSize )
             { for( int i = 0; i < skewImage.cols; i+=blockSize )
@@ -112,12 +91,10 @@ namespace pr{
                     float y2 = eigen.at<cv::Vec6f>(j, i)[5];
                     int angle_cell = angle(x2,y2);
                     angle_list[(angle_cell + 180)%180]+=1.0;
-
                 }
             }
         }
         std::vector<float> filtered = avgfilter(angle_list,5);
-
         int maxPos = std::max_element(filtered.begin(),filtered.end()) - filtered.begin() + FILTER_WINDOWS_SIZE/2;
         if(maxPos>ANGLE_MAX)
             maxPos = (-maxPos+90+180)%180;