#include?“StdAfx.h“
#include?“charseg_preprocess.h“
#include?

extern?bool?Plate_flag;
namespace?plate
{

/**
?*??make_border_zeros?------?mask?the?top?two?rows?bottom?two?rows?left?two?columns
?*???????????????????????????right?two?columns?with?zeros
?*
?*??Parameters:
?*??@img?-------------------?the?input?image?which?will?be?modified
?*/
static?void?make_border_zeros（cv::Mat&?img）
{
????????CV_Assert（?img.depth（）?==?CV_8UC1?）;
????????CV_Assert（?img.rows?>=?2?）;
????????CV_Assert（?img.cols?>=?2?）;

????????img.rowRange（?0?2?）?=?cv::Mat::zeros（2?img.cols?CV_8UC1）;
????????img.rowRange（?img.rows?-?2?img.rows?）?=?
????????????????cv::Mat::zeros（2?img.cols?CV_8UC1）;
????????img.colRange（?0?2?）?=?cv::Mat::zeros（img.rows?2?CV_8UC1）;
????????img.colRange（?img.cols?-?2?img.cols?）?=?
????????????????cv::Mat::zeros（img.rows?2?CV_8UC1）;

????????return;
}

/**
?*??object_enhancement?--------?enhance?the?seven?characters?in?the?plate
?*
?*??Parameters:
?*??@img?----------------------?the?input?gray?image?characters?in?which?will?be?enhanced
?*/
static?void?object_enhancement（cv::Mat&?img）
{
????????CV_Assert（?img.channels（）?==?1?）;

????????//?transfer?pixel?value?range?from?[0?255]?to?[0?100]
????????cv::Mat?weaken_img;
????????img.convertTo（?weaken_img?CV_8UC1?0.40?0.0?）;

????????//?find?the?first?top?40%?pixel?values
????????std::vector?pixel_values;
????????for?（?int?r?=?0;?r?????????????????const?unsigned?char*?prow?=?weaken_img.ptr（r）;
????????????????for?（?int?c?=?0;?c?????????????????????????pixel_values.push_back（?prow[c]?）;
????????????????}
????????}
????????std::sort（?pixel_values.begin（）?pixel_values.end（）?）;
????????std::size_t?sentinel_index?=?cvRound（?pixel_values.size（）?*?0.60?）;
????????unsigned?char?sentinel_value?=?pixel_values[sentinel_index];

????????//?only?the?pixels?whose?value?are?in?the?top?40%?are?enhanced
????????for?（?int?r?=?0;?r?????????????????const?unsigned?char*?pweaken_img_row?=?
????????????????????????weaken_img.ptr（r）;
????????????????unsigned?char*?pimg_row?=?img.ptr（r）;
????????????????for?（?int?c?=?0;?c?????????????????????????if?（?pweaken_img_row[c]?>=?sentinel_value?）?{
????????????????????????????????pimg_row[c]?=?cv::saturate_cast（
????????????????????????????????????????pweaken_img_row[c]?*?2.55?）;
????????????????????????}
????????????????????????else?{
????????????????????????????????pimg_row[c]?=?pweaken_img_row[c];
????????????????????????}
????????????????}
????????}

????????return;
}

/**
?*??img_threshold?----------?Apply?a?fixed-level?threshold?to?each?pixel?of?the?image
?*
?*??Parameters:
?*??@img?-------------------?the?input?gray?image
?*/
static?void?img_threshold（cv::Mat&?img）
{
????????CV_Assert（?img

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????10625??2013-04-10?13:55??plate_recognition_20130410_beifen\charseg_preprocess.cpp
?????文件?????????645??2013-04-01?10:35??plate_recognition_20130410_beifen\charseg_preprocess.h
?????文件???????24169??2013-04-10?13:42??plate_recognition_20130410_beifen\charseg_segment.cpp
?????文件?????????892??2013-04-01?10:33??plate_recognition_20130410_beifen\charseg_segment.h
?????文件?????????752??2013-04-10?11:38??plate_recognition_20130410_beifen\main.cpp
?????文件???????36339??2013-07-05?12:01??plate_recognition_20130410_beifen\plate_recognition_20130410.cpp
?????目錄???????????0??2013-09-01?09:37??plate_recognition_20130410_beifen\