不能在 OpenCV 中使用 SURF、SIFT [英] Can't use SURF, SIFT in OpenCV

问题描述

我正在尝试一个简单的事情

I'm trying a simple thing like

detector = cv2.SIFT()

并得到这个错误

detector = cv2.SIFT()
AttributeError: 'module' object has no attribute 'SIFT'

我不明白，因为安装了 cv2.

I do not understand that because cv2 is installed.

cv2.__version__ 是

$Rev: 4557 $

我的系统是 Ubuntu 12.04.

My system is Ubuntu 12.04.

也许有人遇到了同样的问题，可以帮助我.

Maybe someone has got the same problem and could help me.

长话短说，testypypypy.py:

import cv2

detector = cv2.SIFT()

错误:

Traceback (most recent call last):
  File "testypypy.py", line 3, in <module>
    detector = cv2.SIFT()
AttributeError: 'module' object has no attribute 'SIFT

如果我使用 SURF 它会起作用，因为 SURF 在 dir(cv2) 但如果我也使用 cv2.BFMatcher() 我遇到了同样的错误...所以它丢失了，我必须添加它，但我不知道如何添加.

If I take SURF it works because SURF is in dir(cv2) but if I also take cv2.BFMatcher() I get the same error... So it's missing and I have to add it but I don't know how.

推荐答案

我认为这远非正确"的方法(Ubuntu 上的正确"方法似乎是坚持一个损坏的和/或过时的 OpenCV)，但对我来说，从源代码构建 opencv-2.4.6.1 会带回 cv2.SIFT 和 cv2.SURF.

I think this is far from the "correct" way to do it (the "correct" way on Ubuntu seems to be to stick to a broken and/or outdated OpenCV), but for me building opencv-2.4.6.1 from source brings back cv2.SIFT and cv2.SURF.

步骤:

1. 从 opencv.org 下载 opencv-2.4.6.1.tar.gz.

2. 提取来源:

1. Download opencv-2.4.6.1.tar.gz from opencv.org.

2. Extract the source:

tar -xf opencv-2.4.6.1.tar.gz -C /tmp

配置源.这将告诉 OpenCV 安装到您的主目录中的 .opencv-2.4.6.1 中:

Configure the source. This will tell OpenCV to install into .opencv-2.4.6.1 in your home directory:

cmake -D CMAKE_BUILD_TYPE=RELEASE 
      -D BUILD_PYTHON_SUPPORT=ON 
      -D WITH_XINE=ON 
      -D WITH_OPENGL=ON 
      -D WITH_TBB=ON 
      -D BUILD_EXAMPLES=ON 
      -D BUILD_NEW_PYTHON_SUPPORT=ON 
      -D WITH_V4L=ON 
      -D CMAKE_INSTALL_PREFIX=~/.opencv-2.4.6.1 
      /tmp/opencv-2.4.6.1

构建和安装:

Build and install:

cd /tmp/opencv-2.4.6.1
make -j4
make install

设置 PYTHONPATH(这在 bash 中有效，我对其他 shell 一无所知):

Set PYTHONPATH (this works in bash, I have no clue about other shells):

export PYTHONPATH=~/.opencv-2.4.6.1/lib/python2.7/dist-packages

现在如果我启动 python 并导入 cv2(对我来说，这会产生一个 gnome-keyring 警告)，我有 cv2.SIFT 和 cv2.SURF 可用.

Now if I start python and import cv2 (for me, this produces a gnome-keyring warning), I have cv2.SIFT and cv2.SURF available.

这篇关于不能在 OpenCV 中使用 SURF、SIFT的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！