最近需要做一个图像识别的GUI应用,权衡了Opencv+ 1)QT,2)Python GUI,3).NET后选择了.NET。。。
本文给出C#+Opencv和Python+Opencv的相应参考,节省大家时间。
(一)C#.NET + Opencv
1)下载并安装Emgu库(for opencv on .NET env)
Download @ http://sourceforge.net/projects/emgucv/
2)How to use opencv on C#?
VS上配置Emgu(库)
3)测试on C#.NET
(二)Python + Opencv
按照官网的Instruction一步步来,可以从source自己编译,也可以直接用二进制文件。
这里注意我遇到的一个错误,undefined cv2.SIFT():
- AttributeError: 'module' object has no attribute 'SIFT'
查资料有的地方解释为高版本把SIFT当做non-free的module需要自己编译才有,具体参考这个帖子。
但我自己编译成功后还是没解决问题。。。于是试着吧opencv 2.3.1换成opencv 2.4.6.0,再按官网的Instruction预编译二进制文件方法把cv2.pyd拷到python下,成功了。。。。
PS: 喜欢在mac上折腾的看看这个帖子吧。。。Installing OpenCV 2.4.2 on Mac OSX Mountain Lion with Python support
最后贴个python+opencv+numpy测试代码:
- import cv2
- import numpy as np
- #import pdb
- #pdb.set_trace()#turn on the pdb prompt
- #test cv2 and numpy package
- print cv2.__version__
- a = np.arange(10)
- print(a)
- #read image
- img = cv2.imread('D:\privacy\picture\little girl.jpg',cv2.IMREAD_COLOR)
- gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
- cv2.imshow('tt',img);
- #basic accessing
- b,g,r = img[0,0];#blue,green,red
- print b,g,r
- rows,columns,channels = img.shape
- print rows,columns,channels
- print img.size
- #channels split and merge
- b,g,r = cv2.split(img)
- img = cv2.merge([b,g,r])
- #SIFT
- detector = cv2.SIFT()
- keypoints = detector.detect(gray,None)
- img = cv2.drawKeypoints(gray,keypoints)
- #img = cv2.drawKeypoints(gray,keypoints,flags = cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS)
- cv2.imshow('test',img);
- cv2.waitKey(0)
- cv2.destroyAllWindows()
结果:
from: http://blog.csdn.net/abcjennifer/article/details/17580311