数字图像处理-基于模板匹配的文字识别源码

/**************************************************************************** * @file Template matching.c * @date 2021-06-08 * @author Xiaoxiao * @version CVI2012 + IMAQ vision6.0 * @brief 数图大作业：基于模板匹配的文字识别 * @blog https://blog.csdn.net/weixin_43470383/article/details/117478961 https://blog.csdn.net/weixin_43470383/article/details/117486707 https://blog.csdn.net/weixin_43470383/article/details/117518445 *****************************************************************************/ #include <utility.h> #include <ansi_c.h> #include <cvirte.h> #include <userint.h> #include "nivision.h" #include "Template matching.h" #define num_word 362 // 字的个数 static int panelHandle; static Image *srcImage; // 输入图像 static Image *dstImage; // 输出图像 static Image *binImage; // 二值化图像 static Image *rowSplitImage; // 行分割图像 static Image *colSplitImage; // 列分割图像 static Image *splitImage; // 最终分割图像 static Image *fontsImage[num_word]; // 字库汉字图像 static int width,height; // 原图像的宽、高 static int _height[1024]={0}; // 行分割后每行文字的高度 static int _width[100][50]={0}; // 列分割后每行文字中每个字的宽度 static int topRow[100]={0}; // 每行的上边界 static int bottomRow[100]={0}; // 每行的下边界 int canvasImg; // 幕布显示存储文件 int num_row=0; // 文本的行数 int leftMargin[100][50]={0}; // 每个字符左边界的位置 int rightMargin[100][50]={0}; // 每个字符右边界的位置 int num_col[1024]={0}; // 每行字数 int maxw[1024]={0}; // 每行单个汉字最大的宽度 int number_w[200]={0}; // 每个字每行的白点数目 int topMargin[50][50]={0}; // 每个字的上边界 int bottomMargin[50][50]={0}; // 每个汉字的下边界 Rect Extraction; // 分割后的区域 Point startPoint, endPoint, startPoint1, endPoint1; // 分割划线的起点和终点 char word[num_word][3]={"。","，","？","“","：","；","”","！","、","...", "伟","主","被","路","或","田","民","里","才","残", "都","恶","先","出","次","难","电","久","害","白", "前","选","靠","很","课","两","控","收","快","亏", "只","来","拦","蓝","老","了","离","连","练","凉", "空","吗","满","没","块","幕","拿","那","奶","从", "做","但","弄","屏","去","下","吃","想","小","新", "抗","再","在","这","拉","中","周","吧","子","自", "脑","牛","到","等","点","掉","差","对","额","场", "而","该","敢","杠","高","工","观","国","过","还", "卡","好","和","可","后","会","别","家","就","口", "跨","不","比","拾","补","明","漠","派","盘","平", "看","钱","却","热","日","如","若","沙","时","说", "死","踏","太","并","条","同","投","图","哇","外", "玩","王","围","问","线","像","样","要","已","用", "有","知","左","阿","八","开","本","必","步","曾", "力","当","动","饿","系","乏","转","舞","骨","朝", "机","加","将","讲","他","接","今","青","一","旧", "苦","劳","零","六","度","乱","能","河","怕","拍", "百","跑","配","珊","月","普","七","其","人","暗", "任","三","杀","身","十","是","四","所","体","天", "为","把","我","五","心","性","也","以","益","统", "于","域","张","志","走","个","无","分","赞","析", "继","术","保","护","制","技","坐","独","川","林", "照","幽","篁","弹","琴","复","长","啸","深","阙", "江","红","岳","飞","怒","发","冲","冠","凭","栏", "处","潇","雨","歇","抬","望","眼","仰","啸","壮", "怀","激","烈","功","名","尘","与","土","千","云", "和","莫","闲","少","年","头","空","悲","切","靖", "康","耻","犹","未","雪","臣","恨","何","灭","驾", "车","破","贺","兰","山","缺","饥","餐","胡","虏", "肉","笑","谈","渴","饮","匈","奴","血","待","玉", "案","元","夕","辛","弃","疾","东","风","夜","放", "花","树","更","吹","落","星","宝","马","雕","香", "凤","箫","声","壶","光","鱼","龙","蛾","儿","柳", "黄","金","缕","语","盈","众","里","寻","蓦","然", "回","首"}; int main (int argc, char *argv[]) { if (InitCVIRTE (0, argv, 0) == 0) return -1; if ((panelHandle = LoadPanel(0, "Template matching.uir", PANEL)) < 0) return -1; DisplayPanel(panelHandle); srcImage = imaqCreateImage(IMAQ_IMAGE_U8, 2); dstImage = imaqCreateImage(IMAQ_IMAGE_U8, 2); binImage = imaqCreateImage(IMAQ_IMAGE_U8, 2); rowSplitImage = imaqCreateImage(IMAQ_IMAGE_U8, 2); splitImage = imaqCreateImage(IMAQ_IMAGE_U8, 2); colSplitImage = imaqCreateImage(IMAQ_IMAGE_U8, 2); char AllImagePath[num_word][260], location[20]; // 获取路径，读入字库中所有图片，建立模板库 for(int i = 0; i < num_word; i++) { fontsImage[i] = imaqCreateImage (IMAQ_IMAGE_U8, 3); GetProjectDir(AllImagePath[i]); sprintf(location,"\\train\\%d.bmp",i); strcat(AllImagePath[i], location); imaqReadFile(fontsImage[i], AllImagePath[i], NULL, NULL); // 样本图片二值化处理，构成标准汉字模板库 imaqThreshold(fontsImage[i], fontsImage[i], 100, 255, TRUE, 255); } RunUserInterface(); DiscardPanel(panelHandle); return 0; } /*****************************加载图片**********************************/ int CVICALLBACK Load_image (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { char fileName[512]; int status; switch (event) { case EVENT_COMMIT: status = FileSelectPopup ("", "*.bmp*", "", "select an image file", VAL_LOAD_BUTTON, 0, 0, 1, 0, fileName); if(status = 1) { // 显示输入的测试图片 imaqReadFile(srcImage, fileName, NULL, NULL); imaqCloseWindow(IMAQ_ALL_WINDOWS); CanvasClear(panelHandle, PANEL_CANVAS_IN, VAL_ENTIRE_OBJECT); GetBitmapFromFile(fileName, &canvasImg); CanvasDrawBitmap(panelHandle, PANEL_CANVAS_IN, canvasImg, VAL_ENTIRE_OBJECT, VAL_ENTIRE_OBJECT); DiscardBitmap(canvasImg); // 测试图片二值化和反色 imaqThreshold(binImage, srcImage, 100, 255, TRUE, 255); imaqNor(binImage, binImage, binImage); } break; } return 0; } /*****************************行分割**********************************/ int CVICALLBACK rowSplit (int panel, int control, int event, void *callbackData, int eventData1, int eventData2) { Point point; PixelValue grayLevel; // 记录每行文字上界和下界的数目 int topm=0, botm=0; // 获取输入图片的宽和高 imaqGetImageSize (srcImage, &width, &height); // 每行（反色后）白点的数目（注意必须在获取图片的高度的前提下） int *pt = calloc(height, sizeof(int)); switch (event) { case EVENT_COMMIT: // 出现（反色后）白色像素则确定边界 for(int h = 0; h < height; h++) { for(int w = 0; w < width; w++) { point.x = w; point.y = h; imaqGetPixel(binImage, point, &grayLevel); if(grayLevel.grayscale == 255.0) *(pt + h) = *(pt + h) + 1; } } // 记录每行文字上界和文字下界 for(int h = 0; h < height - 1; h++) { if(*(pt + h) == 0 & *(pt + h + 1) > 0) { topRow[topm++] = h; num_row = num_row + 1; // 划线显示行分割效果 startPoint.x = 0; startPoint.y = h; endPoint.x = width; endPoint.y = h; imaqDrawLineOnImage(srcImage, srcImage, IMAQ_DRAW_VALUE, startPoint, endPoint, 0.0); } if(*(pt + h) > 0 & *(pt + h + 1) == 0) { bottomRow[botm++] = h; startPoint.x = 0; startPoint.y = h; endPoint.x = width; endPoint.y = h; imaqDrawLineOnImage(srcImage, srcImage, IMAQ_DRAW_VALUE, startPoint, endPoint, 0.0); } } // 记录行分割后每行文字的高度 for(int topm = 0; topm < num_row; topm++) _height[topm] = bottomRow[topm] - topRow[topm]; imaqWri