访问一个numpy数组中的每个元素

Question

我正在尝试通过查看相邻像素从alpha通道蒙版中删除杂散的白色像素，但是一直无法获取TypeEror：无法调用'numpy.ndarray'对象，我使用pygame.surfarray alphachannel3d = pygame.surfarray.pixels3d(alphachannel)了一个数组： alphachannel3d = pygame.surfarray.pixels3d(alphachannel)然后尝试通过它并将像素值从白色更改为黑色： if (alphachannel3d[x] == (0, 0, 0)) & (alphachannel3d[x + 3] == (255, 255, 255)) & (alphachannel3d[x -3]==(255, 255, 255)): alphachannel3d[x] = (255, 255, 255)

这是循环：

x=1

while 1:

  count = x
  print 'count is', count

  print 'waiting 5 seconds'
  pygame.time.wait(5000)


  img = cam.get_image()

  imgarray = pygame.PixelArray(img)

  alphachannelarray = basearray.compare(imgarray, distance=0.09, weights=(0.01, 0.01, 0.01))

  alphachannel = alphachannelarray.make_surface()

  alphachannel3d = pygame.surfarray.pixels3d(alphachannel)


  if (alphachannel3d[x] == (0, 0, 0)) & (alphachannel3d[x + 3] == (255, 255, 255)) & (alphachannel3d[x -3]==(255, 255, 255)):
    alphachannel3d[x] = (255, 255, 255)

  alphachannel = pygame.surfarray.make_surface(alphachannel3d)
  srfcScreen.blit(alphachannel, (0,0))
  print 'screen blitted'

  pygame.display.flip()
  print 'display flipped'

  x = x+1

Answer 1

根据您的评论，我将给出以下推测性答案（未经测试）：

if np.all(alphachannel3d[x] == (0, 0, 0)) & np.all(alphachannel3d[x + 3] == (255, 255, 255)) & np.all(alphachannel3d[x -3]==(255, 255, 255)):
    alphachannel3d[x] = (255, 255, 255)