NSantos's questions

I have been looking for a way to straighten a scanned image, more precisely a form, I need a function that automatically straightens it, I have tried with

import numpy as np
import numpy as np
import argparse
import cv2

img = cv2.imread('D:/Consecu.jpg',0)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
gray = cv2.bitwise_not(gray)

thresh = cv2.threshold(gray, 0, 255,
                       cv2.THRESH_BINARY | cv2.THRESH_OTSU)[1]
coords = np.column_stack(np.where(thresh > 0))
angle = cv2.minAreaRect(coords)[-1]

if angle < -45:
    angle = -(90 + angle)
else:
    angle = -angle

(h, w) = image.shape[:2]
center = (w // 2, h // 2)
M = cv2.getRotationMatrix2D(center, angle, 1.0)

rotated = cv2.warpAffine(image, M, (w, h),
                         flags=cv2.INTER_CUBIC,
                         borderMode=cv2.BORDER_REPLICATE)
cv2.putText(rotated, "Angle: {:.2f} degrees".format(angle),
            (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (0, 0, 255), 2)

print("[INFO] angle: {:.3f}".format(angle))
cv2.imshow("Input", image)
cv2.imshow("Rotated", rotated)
cv2.waitKey(0)

But the image does not rotate, it does not find a degree (0,0) of inclination, how could it rotate the frame or detect lines, which organizes them horizontally

I need a function that automatically straightens it and leave it like that