I want to draw three lines horizontally from any where of the image so that it don't overlap any back color pixel, like I've drawn in the image. I'm new to python open cv, can anyone please guide me how can I do that without training any ML or DL model. As per as I've found on the internet it gives me some line detection or paragraph detection code. Like This
import cv2
from imutils import contours
import imutils
def captch_ex(file_name):
img = cv2.imread(file_name)
img_final = cv2.imread(file_name)
img2gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
ret, mask = cv2.threshold(img2gray, 180, 255, cv2.THRESH_BINARY)
image_final = cv2.bitwise_and(img2gray, img2gray, mask=mask)
ret, new_img = cv2.threshold(image_final, 180, 255, cv2.THRESH_BINARY_INV) # for black text , cv.THRESH_BINARY_INV
'''
line 8 to 12 : Remove noisy portion
'''
kernel = cv2.getStructuringElement(cv2.MORPH_CROSS, (3,
3)) # to manipulate the orientation of dilution , large x means horizonatally dilating more, large y means vertically dilating more
dilated = cv2.dilate(new_img, kernel, iterations=9) # dilate , more the iteration more the dilation
contours, hierarchy = cv2.findContours(dilated, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE) # findContours returns 3 variables for getting contours
for contour in contours:
# get rectangle bounding contour
x, y, w, h = cv2.boundingRect(contour)
# Don't plot small false positives that aren't text
if w < 35 and h < 35:
continue
# draw rectangle around contour on original image
cv2.rectangle(img, (x, y), (x + w, y + h), (255, 0, 255), 1)
'''
#you can crop image and send to OCR , false detected will return no text :)
cropped = img_final[y :y + h , x : x + w]
s = file_name + '/crop_' + str(index) + '.jpg'
cv2.imwrite(s , cropped)
index = index + 1
'''
# write original image with added contours to disk
cv2.imshow('captcha_result', img)
cv2.waitKey()
file_name = '2.png'
captch_ex(file_name)
Can anyone help me to achieve this image kind of result:
