Attributeerror: 'nonetype' object has no attribute 'copy'why?

  1  import cv2 as cv 
  2  import numpy as np
  3  
  4  # colors 
  5  # values =(blue, green, red) opencv accepts BGR values not RGB
  6  BLACK = (0,0,0)
  7  WHITE = (255,255,255)
  8  BLUE = (255,0,0)
  9  RED = (0,0,255)
 10  CYAN = (255,255,0)
 11  YELLOW =(0,255,255)
 12  MAGENTA = (255,0,255)
 13  GRAY = (128,128,128)
 14  GREEN = (0,255,0)
 15  PURPLE = (128,0,128)
 16  ORANGE = (0,165,255)
 17  PINK = (147,20,255)
 18  points_list =[(200, 300), (150, 150), (400, 200)]
 19  def drawColor(img, colors):
 20      x, y = 0,10
 21      w, h = 20, 30
 22      
 23      for color in colors:
 24          x += w+5 
 25          # y += 10 
 26          cv.rectangle(img, (x-6, y-5 ), (x+w+5, y+h+5), (10, 50, 10), -1)
 27          cv.rectangle(img, (x, y ), (x+w, y+h), color, -1)
 28      
 29  
 30  def textWithBackground(img, text, font, fontScale, textPos, textThickness=1,textColor=(0,255,0), bgColor=(0,0,0), pad_x=3, pad_y=3, bgOpacity=0.5):
 31      """
 32      Draws text with background, with  control transparency
 33      @param img:(mat) which you want to draw text
 34      @param text: (string) text you want draw
 35      @param font: fonts face, like FONT_HERSHEY_COMPLEX, FONT_HERSHEY_PLAIN etc.
 36      @param fontScale: (double) the size of text, how big it should be.
 37      @param textPos: tuple(x,y) position where you want to draw text
 38      @param textThickness:(int) fonts weight, how bold it should be
 39      @param textPos: tuple(x,y) position where you want to draw text
 40      @param textThickness:(int) fonts weight, how bold it should be.
 41      @param textColor: tuple(BGR), values -->0 to 255 each
 42      @param bgColor: tuple(BGR), values -->0 to 255 each
 43      @param pad_x: int(pixels)  padding of in x direction
 44      @param pad_y: int(pixels) 1 to 1.0 (), controls transparency of  text background 
 45      @return: img(mat) with draw with background
 46      """
 47      (t_w, t_h), _= cv.getTextSize(text, font, fontScale, textThickness) # getting the text size
 48      x, y = textPos
 49      overlay = img.copy() # coping the image
 50      cv.rectangle(overlay, (x-pad_x, y+ pad_y), (x+t_w+pad_x, y-t_h-pad_y), bgColor,-1) # draw rectangle 
 51      new_img = cv.addWeighted(overlay, bgOpacity, img, 1 - bgOpacity, 0) # overlaying the rectangle on the image.
 52      cv.putText(new_img,text, textPos,font, fontScale, textColor,textThickness ) # draw in text
 53      img = new_img
 54  
 55      return img
 56  
 57  
 58  def textBlurBackground(img, text, font, fontScale, textPos, textThickness=1,textColor=(0,255,0),kneral=(33,33) , pad_x=3, pad_y=3):
 59      """    
 60      Draw text with background blured,  control the blur value, with kernal(odd, odd)
 61      @param img:(mat) which you want to draw text
 62      @param text: (string) text you want draw
 63      @param font: fonts face, like FONT_HERSHEY_COMPLEX, FONT_HERSHEY_PLAIN etc.
 64      @param fontScale: (double) the size of text, how big it should be.
 65      @param textPos: tuple(x,y) position where you want to draw text
 66      @param textThickness:(int) fonts weight, how bold it should be.
 67      @param textColor: tuple(BGR), values -->0 to 255 each
 68      @param kneral: tuple(3,3) int as odd number:  higher the value, more blurry background would be
 69      @param pad_x: int(pixels)  padding of in x direction
 70      @param pad_y: int(pixels)  padding of in y direction
 71      @return: img mat, with text drawn, with background blured
 72      
 73      call the function: 
 74       img =textBlurBackground(img, 'Blured Background Text', cv2.FONT_HERSHEY_COMPLEX, 0.9, (20, 60),2, (0,255, 0), (49,49), 13, 13 )
 75      """
 76      
 77      (t_w, t_h), _= cv.getTextSize(text, font, fontScale, textThickness) # getting the text size
 78      x, y = textPos
 79      blur_roi = img[y-pad_y-t_h: y+pad_y, x-pad_x:x+t_w+pad_x] # croping Text Background
 80      img[y-pad_y-t_h: y+pad_y, x-pad_x:x+t_w+pad_x]=cv.blur(blur_roi, kneral)  # merging the blured background to img
 81      cv.putText(img,text, textPos,font, fontScale, textColor,textThickness )          
 82      # cv.imshow('blur roi', blur_roi)
 83      # cv.imshow('blured', img)
 84  
 85      return img
 86  
 87  def fillPolyTrans(img, points, color, opacity):
 88      """
 89      @param img: (mat) input image, where shape is drawn.
 90      @param points: list [tuples(int, int) these are the points custom shape,FillPoly
 91      @param color: (tuples (int, int, int)
 92      @param opacity:  it is transparency of image.
 93      @return: img(mat) image with rectangle draw.
 94      """
 95      list_to_np_array = np.array(points, dtype=np.int32)
 96      overlay = img.copy()  # coping the image
 97      cv.fillPoly(overlay,[list_to_np_array], color )
 98      new_img = cv.addWeighted(overlay, opacity, img, 1 - opacity, 0)
 99      # print(points_list)
100      img = new_img
101      cv.polylines(img, [list_to_np_array], True, color,1, cv.LINE_AA)
102      return img
103  
104  def rectTrans(img, pt1, pt2, color, thickness, opacity):
105      """
106      @param img: (mat) input image, where shape is drawn.
107      @param pt1: tuple(int,int) it specifies the starting point(x,y) os rectangle
108      @param pt2: tuple(int,int)  it nothing but width and height of rectangle
109      @param color: (tuples (int, int, int), it tuples of BGR values
110      @param thickness: it thickness of board line rectangle, if (-1) passed then rectangle will be fulled with color.
111      @param opacity:  it is transparency of image.
112      @return:
113      """
114      overlay = img.copy()
115      cv.rectangle(overlay, pt1, pt2, color, thickness)
116      new_img = cv.addWeighted(overlay, opacity, img, 1 - opacity, 0) # overlaying the rectangle on the image.
117      img = new_img
118  
119      return img
120  
121  def main():
122      cap = cv.VideoCapture('Girl.mp4')
123      counter =0
124      while True:
125          success, img = cap.read()
126          # img = np.zeros((1000,1000, 3), dtype=np.uint8)
127          img=rectTrans(img, pt1=(30, 320), pt2=(160, 260), color=(0,255,255),thickness=-1, opacity=0.6)
128          img =fillPolyTrans(img=img, points=points_list, color=(0,255,0), opacity=.5)
129          drawColor(img, [BLACK,WHITE ,BLUE,RED,CYAN,YELLOW,MAGENTA,GRAY ,GREEN,PURPLE,ORANGE,PINK])
130          textBlurBackground(img, 'Blured Background Text', cv.FONT_HERSHEY_COMPLEX, 0.8, (60, 140),2, YELLOW, (71,71), 13, 13)
131          img=textWithBackground(img, 'Colored Background Texts', cv.FONT_HERSHEY_SIMPLEX, 0.8, (60,80), textThickness=2, bgColor=GREEN, textColor=BLACK, bgOpacity=0.7, pad_x=6, pad_y=6)
132          imgGray = cv.cvtColor(img, cv.COLOR_BGR2GRAY)
133          # cv.imwrite('color_image.png', img)
134          counter +=1
135          cv.imshow('img', img)
136          cv.imwrite(f'image/image_{counter}.png', img)
137          if cv.waitKey(1) ==ord('q'):
138              break
139  
140  if __name__ == "__main__":
141      main()

Traceback (most recent call last):
  File "C:\Users\Admini\AppData\local-packages\Python310\site-packages\utils\utils.py", line 141, in <module>
    main()
  File "C:\Users\Admini\AppData\local-packages\Python310\site-packages\utils\utils.py", line 127, in main
    img=rectTrans(img, pt1=(30, 320), pt2=(160, 260), color=(0,255,255),thickness=-1, opacity=0.6)
  File "C:\Users\Admini\AppData\local-packages\Python310\site-packages\utils\utils.py", line 114, in rectTrans
    overlay = img.copy()
AttributeError: 'NoneType' object has no attribute 'copy'