Question

我目前正致力于图像检测项目，并且某段代码需要捕获视频输出的最后一帧。为了获得最佳结果，我们必须创建一个直方图，绘制所有像素的分配（我已经完成）并将它们平均以获得环境光水平。目前我的代码如下所示：

from PIL import Image
import os
from pylab import *
from PIL import ImageFont
from PIL import ImageDraw


#read image 
image1 = array(Image.open("EE_Design_Chimys.jpg").convert('L'))

#plot image
imshow(image1)
#create a new figure
figure()
#dont use colors
gray()
#show contours with origin upper left corner
contour(image1, origin='image')
axis('equal')
axis('off')
figure()
a = hist(image1.flatten(),128)

#attempt to average out histogram
average(a)

show(a)

当我运行此代码时，它会输出如下错误消息：

Traceback (most recent call last):
  File "/Users/Perez/Desktop/Python Stuff/mod_amb_light.py", line 25, in <module>
     average(a)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/numpy/lib/function_base.py", line 935, in average
    avg = a.mean(axis)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/numpy/core/_methods.py", line 65, in _mean
    ret = umr_sum(arr, axis, dtype, out, keepdims)
ValueError: operands could not be broadcast together with shapes (128,) (129,)

我不确定这究竟意味着如何开始解决它。如果有人有任何有用的提示或想法，请分享您的知识！谢谢。

此致 Jaime Perez Jr。

NumPy：需要帮助取平均值的平均值

0 个答案: