• python图形库(1)


    python有很好图形库cv2(包含很多图形处理的算法),pylab(绘图工具模块)

    这两个“模块”是肯定要配置的。

    安装这两个模块可用了我不少时间。

    pylab它不是一个包,而是 numpy, scipy 和 matplotlab 的合体,要安装这3个部分。

     
    然后检测一下:
    1 import pylab as pl
    2 listOfInt = []
    3 for c in range(10):
    4     listOfInt.append(c*2)
    5 
    6 print listOfInt
    7 
    8 pl.plot(listOfInt)
    9 pl.show()

    出现效果:就成功了pylab模块的安装.

    然后就是cv2了,找了好多资料,python库那里面下载东西,目录结构刚开始没搞清楚,不知道粘贴哪个。

    http://blog.csdn.net/qq_14845119/article/details/52354394这篇文章有很详细的讲解。说的比较多。只要看一部分就ok了

    opencv2.4.12 http://opencv.org/downloads.html下载地址。

    点击下载的opencv-2.4.12.exe,一路next下去,例如本人安装到E盘根目录下。安装完成后,将E:opencv2_4_12uildpython2.7x64下的cv2.pyd拷贝到你的Lib文件夹下就可以了。

    然后测试一下

     1 import cv2
     2 import numpy as np
     3 
     4 img = cv2.imread("1.jpg")
     5 emptyImage = np.zeros(img.shape, np.uint8)
     6 
     7 emptyImage2 = img.copy()
     8 
     9 emptyImage3=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
    10 
    11 cv2.imshow("EmptyImage3", emptyImage3)
    12 cv2.waitKey (0)
    13 cv2.destroyAllWindows()

    显示效果即可:

     注意:scipyhttp://sourceforge.net/projects/scipy/files/scipy/0.12.0/

    里面是没有64位操作系统的exe文件的,解决方案有很多,但是有效的不多,改注册表麻烦。

    写一个register.py的脚本,我试了一下是没有用的。可以去尝试一下。

     1 #
     2 # script to register Python 2.0 or later for use with win32all
     3 # and other extensions that require Python registry settings
     4 #
     5 # written by Joakim Loew for Secret Labs AB / PythonWare
     6 #
     7 # source:
     8 # http://www.pythonware.com/products/works/articles/regpy20.htm
     9 #
    10 # modified by Valentine Gogichashvili as described in http://www.mail-archive.com/distutils-sig@python.org/msg10512.html
    11  
    12 import sys
    13  
    14 from _winreg import *
    15  
    16 # tweak as necessary
    17 version = sys.version[:3]
    18 installpath = sys.prefix
    19  
    20 regpath = "SOFTWARE\Python\Pythoncore\%s\" % (version)
    21 installkey = "InstallPath"
    22 pythonkey = "PythonPath"
    23 pythonpath = "%s;%s\Lib\;%s\DLLs\" % (
    24     installpath, installpath, installpath
    25 )
    26  
    27 def RegisterPy():
    28     try:
    29         reg = OpenKey(HKEY_CURRENT_USER, regpath)
    30     except EnvironmentError as e:
    31         try:
    32             reg = CreateKey(HKEY_CURRENT_USER, regpath)
    33             SetValue(reg, installkey, REG_SZ, installpath)
    34             SetValue(reg, pythonkey, REG_SZ, pythonpath)
    35             CloseKey(reg)
    36         except:
    37             print "*** Unable to register!"
    38             return
    39         print "--- Python", version, "is now registered!"
    40         return
    41     if (QueryValue(reg, installkey) == installpath and
    42         QueryValue(reg, pythonkey) == pythonpath):
    43         CloseKey(reg)
    44         print "=== Python", version, "is already registered!"
    45         return
    46     CloseKey(reg)
    47     print "*** Unable to register!"
    48     print "*** You probably have another Python installation!"
    49  
    50 if __name__ == "__main__":
    51     RegisterPy()
    View Code

     

    大致意思说的是scipy需要numpy不是上面的那种,而是numpy+mkl

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  • 原文地址:https://www.cnblogs.com/TreeDream/p/6493272.html
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