| | |
| | | import cv2 |
| | | import numpy as np |
| | | from skimage import morphology,img_as_ubyte |
| | | from sklearn import svm |
| | | from sklearn.externals import joblib |
| | | |
| | | |
| | | |
| | | """ |
| | | (1) The text is an array of chars (in row-major order) where |
| | |
| | | return np.ones((x, y), np.uint8) |
| | | |
| | | |
| | | def enhanceSID(image): |
| | | def getSID(image, classifier): |
| | | image=255-image |
| | | image=img_as_ubyte(image>100) |
| | | cv2.imwrite("enSID0.png", image) |
| | | # Remove noise |
| | | image = cv2.morphologyEx(image, cv2.MORPH_OPEN, kernel(2,2), iterations=1) |
| | | # Closing. Connect non connected parts |
| | | image = cv2.morphologyEx(image, cv2.MORPH_CLOSE, kernel(5, 5), iterations=2) |
| | | image = cv2.morphologyEx(image, cv2.MORPH_CLOSE, kernel(5, 3), iterations=4) |
| | | # Again noise removal after closing |
| | | |
| | | image = cv2.morphologyEx(image, cv2.MORPH_OPEN, kernel(8,8), iterations=1) |
| | | # Skeletonization |
| | | ##For thinning I am using erosion |
| | | ##image = cv2.erode(image,kernel(4,4),iterations = 40) |
| | | image = img_as_ubyte(morphology.thin(image>128)) |
| | | cv2.imwrite("enSID1.png",image) |
| | | # Stub removal (might not be necessary if thinning instead of skeletonize is used above |
| | |
| | | # Thining again |
| | | image = img_as_ubyte(morphology.skeletonize(image>0.5)) |
| | | image = cv2.morphologyEx(image, cv2.MORPH_DILATE, kernel(10, 10)) |
| | | |
| | | im2,ctrs, hier = cv2.findContours(image.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE) |
| | | sorted_ctrs = sorted(ctrs, key=lambda ctr: cv2.boundingRect(ctr)[0]) |
| | | |
| | | #classifier = joblib.load('filename.joblib') |
| | | |
| | | sid_no="" |
| | | for i, ctr in enumerate(sorted_ctrs): |
| | | # Get bounding box |
| | | x, y, w, h = cv2.boundingRect(ctr) |
| | | # Getting ROI |
| | | if(w<h/2): |
| | | sid_no=sid_no+"1" |
| | | continue |
| | | roi = image[y:y+h, x:x+w] |
| | | roi = img_as_ubyte(roi < 128) |
| | | roi = cv2.resize(roi,(32,32)) |
| | | |
| | | #cv2.rectangle(image,(x,y),( x + w, y + h ),(0,255,0),2) |
| | | cv2.imwrite('sid_no_{}.png'.format(i), roi) |
| | | sid_no=sid_no+str(classifier.predict(roi.reshape(1,-1)/255.0)[0]) |
| | | print(sid_no) |
| | | return image |