Python detect lines in document

Python detect lines

img = cv2.imread('src.png')
gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)

kernel_size = 5
blur_gray = cv2.GaussianBlur(gray,(kernel_size, kernel_size),0)

low_threshold = 50
high_threshold = 150
edges = cv2.Canny(blur_gray, low_threshold, high_threshold)

rho = 1  # distance resolution in pixels of the Hough grid
theta = np.pi / 180  # angular resolution in radians of the Hough grid
threshold = 15  # minimum number of votes (intersections in Hough grid cell)
min_line_length = 50  # minimum number of pixels making up a line
max_line_gap = 20  # maximum gap in pixels between connectable line segments
line_image = np.copy(img) * 0  # creating a blank to draw lines on

# Run Hough on edge detected image
# Output "lines" is an array containing endpoints of detected line segments
lines = cv2.HoughLinesP(edges, rho, theta, threshold, np.array([]),
                    min_line_length, max_line_gap)

for line in lines:
    for x1,y1,x2,y2 in line:
    cv2.line(line_image,(x1,y1),(x2,y2),(255,0,0),5)
    
lines_edges = cv2.addWeighted(img, 0.8, line_image, 1, 0)

Source: stackoverflow.com

Similar codes

10 votes387 views1 answer
Add static file in django
Python Django
0 vote362 views1 answer
ModuleNotFoundError: No module named 'wtforms.fields.html5'
Python
0 vote317 views1 answer
Convert fisheye video to normal python
Python
1 vote308 views1 answer
Python mean and standard deviation of list
Python
0 vote359 views1 answer
Django check user admin
Python Django
1 vote325 views2 answers
Django timezone settings
Python Django
0 vote317 views1 answer
Plt.hist using bins
Python
0 vote325 views1 answer
"DjangoJSONEncoder" is not defined
Python
3 votes337 views1 answer
Csrf token exempt django
Python Django
2 votes365 views2 answers
Django regexvalidator example
Python Django