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

0 vote185 views2 answers
Labs fill ggplot2
Python
0 vote175 views1 answer
Run ipython inside pipenv
Python
0 vote160 views1 answer
Python get all items from generator
Python
1 vote163 views1 answer
Olst = [] a = int(input()) b = int(input()) for ele in range(a,b+1): if ele%2 != 0: olst.append(ele) print(olst[::-1])
Python
0 vote154 views1 answer
Add prefix to names in directory python
Python
1 vote155 views1 answer
Python while false loop
Python
0 vote199 views1 answer
Clear output alternative for visual studio code in python
Python
1 vote166 views2 answers
Python rgb colors
Python
1 vote196 views1 answer
Handle queries in ListView django
Python Django
1 vote195 views1 answer
Run django app locally
Python Django