下面的代码用于对象检测。我构建了代码并运行良好，但当我将代码粘贴到kivy python中时，我出现了错误。
我在调用kivy类之外的函数时出错。所以，请帮我纠正这个错误。
告诉我如何调用函数来运行代码。
代码如下：
from __future__ import division
import kivy
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.image import Image
from kivy.clock import Clock
from kivy.graphics.texture import Texture
from kivy.uix.label import Label
import cv2
from matplotlib import pyplot as plt
import numpy as np
from math import cos, sin
green = (0, 255, 0)
class face(App):
def show(self, image):
#figure size in inches
plt.figure(figsize=(10,10))
plt.imshow(image, interpolation='nearest')
def overlay_mask(self, mask, image):
#mask the mask rgb
rgb_mask = cv2.cvtColor(mask, cv2.COLOR_GRAY2RGB)
img = cv2.addWeighted(rgb_mask, 0.5, image, 0.5, 0)
return img
def find_biggest_contour(self, image):
#copy image
image = image.copy()
contours, hierarchy = cv2.findContours(image, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE)
#to find biggest contour
contour_sizes = [(cv2.contourArea(contour), contour) for contour in contours]
biggest_contour = max(contour_sizes, key=lambda x: x[0])[1]
#return the biggest contour
mask = np.zeros(image.shape, np.uint8)
cv2.drawContours(mask, [biggest_contour], -1, 255, -1)
return biggest_contour, mask
def circle_contour(self, image, contour):
#bounding ellipse
image_with_ellipse = image.copy()
ellipse = cv2.fitEllipse(contour)
#add it
cv2.ellipse(image_with_ellipse, ellipse, green, 2, cv2.LINE_AA)
return image_with_ellipse
def find_object(self, image):
#RGB is red green blue
#BGR is blue green red
image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
#to scale the image
max_dimension = max(image.shape)
scale = 700/max_dimension
image = cv2.resize(image, None, fx=scale, fy=scale)
#to clean the image
image_blur = cv2.GaussianBlur(image, (7,7), 0)
image_blur_hsv = cv2.cvtColor(image_blur, cv2.COLOR_RGB2HSV)
#defining the filters by color
min_red = np.array([0,100, 80])
max_red = np.array([10,256, 256])
mask1 = cv2.inRange(image_blur_hsv, min_red, max_red)
#filter by brightness
min_red2 = np.array([170,100,80])
max_red2 = np.array([100,256,256])
mask2 = cv2.inRange(image_blur_hsv, min_red2, max_red2)
mask = mask1 + mask2
kernel = cv2.getStructuringElement(cv2.MORPH_ELLIPSE, (15,15))
mask_closed = cv2.morphologyEx(mask, cv2.MORPH_CLOSE, kernel)
mask_clean = cv2.morphologyEx(mask_closed, cv2.MORPH_OPEN, kernel)
big_object_contour, mask_object = find_biggest_contour(mask_clean)
overlay = overlay_mask(mask_clean, image)
circled = circle_contour(overlay, big_object_contour)
show(circled)
#convert back to original color scheme
bgr = cv2.cvtColor(circled, cv2.COLOR_RGB2BGR)
return bgr
#to read the image
def call(self):
image = cv2.imread('apple.jpeg')
result = self.find_object(image)
#write the new image
cv2.imwrite('apple2.jpeg', result)
if __name__ == '__main__':
face().run()
#img = Image(source = "apple2.jpeg")
#print(img)
cv2.destroyAllWindows()
谢谢。
这就是如何从类调用函数
A类：
def __init__(self):
pass
def x(self):
print('x')
B类：
def __init__(self):
A().x()