c++ - OpenCV Alphabets detection and extraction on shape of alphabet after skeletonization -

i want detect , extract alphabets image , create new image contains alphabets.i have applied skeletonization on image after want suggestions.how can detect letters using contours or stroke bases.the images using dvd player pack panel e.g,

the code using skeletonization is

cvtcolor(input, input, cv_bgr2gray); cv::threshold(input, input, 127, 255, cv::thresh_binary); cv::mat skel(input.size(), cv_8uc1, cv::scalar(0)); cv::mat temp; cv::mat eroded;  cv::mat element = cv::getstructuringelement(cv::morph_cross, cv::size(3, 3));  bool done; {     cv::erode(input, eroded, element);     cv::dilate(eroded, temp, element); // temp = open(input)     cv::subtract(input, temp, temp);     cv::bitwise_or(skel, temp, skel);     eroded.copyto(input);      done = (cv::countnonzero(input) == 0); } while (!done); 

the output image after skeletonization,

source :http://felix.abecassis.me/2011/09/opencv-morphological-skeleton/

in opencv 3.0 there module text detection , recognition. link. text detection based on extremal regions , maximally stable extremal regions. recognition part done integrating tesseract or letter classifier trained scene text. might tune parameters of algorithm, minimum , maximum size of blob case. example code: link