我只是在图像上得到一个大X，而不是在道路标记上

Question

在显示线条之前，但是当我尝试将线条变成蓝色并将其添加到图像中时，我在图像上得到的是一个大的蓝色X？

我再次重写了代码，甚至找到了一个教程，但是仍然没有运气，仍然遇到同样的问题

import cv2
import numpy as np

def make_coordinates (image, line_parameters):
    slope, incercept = line_parameters
    y1 = image.shape[0]
    y2 = int(y1*(3/5))
    x1 = int((y1 - incercept)/slope)
    x2 = int((y2 - incercept)/slope)
    return np.array([x1, y1, x2, y2])

def average_slope_intercept(image, lines):
    left_fit = []
    right_fit = []
    for line in lines:
        x1, y1, x2, y2 = line.reshape(4)
        parameters = np.polyfit((x1, x2), (y1, y2), 1)
        slope = parameters[0]
        intercept = parameters[1]
        if slope < 0:
            left_fit.append((slope, intercept))
        else:
            right_fit.append((slope, intercept))
    left_fit_average = np.average(left_fit, axis = 0)
    right_fit_average = np.average(right_fit, axis = 0)
    left_line = make_coordinates(image, left_fit_average)
    right_line = make_coordinates(image, right_fit_average)
    return np.array([left_line, right_line])


def canny(image):
    gray = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)
    blur = cv2.GaussianBlur(gray, (5, 5),0)
    canny = cv2.Canny(blur, 50, 150)
    return canny

def display_lines(image, lines):
    line_image = np.zeros_like(image)
    if lines is not None:
        for line in lines:
            x1, y1, x2, y2 = line.reshape(4)
            cv2.line(line_image, (x1, y1), (x2, y2), (255, 0, 0), 10)
    return line_image

def region_of_interest(image):
    height = image.shape[0]
    polygons = np.array([
    [(200, height), (1100, height), (550, 250)]
    ])
    mask = np.zeros_like(image)
    cv2.fillPoly(mask, polygons, 255)
    masked_images = cv2.bitwise_and(image, mask)
    return masked_images

image = cv2.imread('test_image.jpg')
lane_image = np.copy(image)
canny_image = canny(lane_image)
cropped_image = region_of_interest(canny_image)
lines = cv2.HoughLinesP(cropped_image, 2, np.pi/180, 100, np.array([]), minLineLength=40, maxLineGap=5)
averaged_lines = average_slope_intercept(lane_image, lines)
line_image = display_lines(lane_image, averaged_lines)
combo_image = cv2.addWeighted(lane_image, 0.8, line_image, 1, 1)
cv2.imshow("results", line_image)
cv2.waitKey(0)

我在终端窗口上没有任何错误

Answer 1

它想在图的一半处画线，而不像下面的图。

这就是我尝试在道路上添加线的结果