无法在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()

并得到这个严重的错误

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，可以为我提供帮助.

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

长话短说， testypypypypy.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，那么它会起作用，因为SURF在dir(cv2)中，但是如果我也使用cv2.BFMatcher()，则会遇到相同的错误...因此它丢失了，我必须添加它，但是我没有知道怎么做.

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

我认为这与正确"的方法相去甚远(Ubuntu上的正确"方法似乎要坚持下去，并且/或者过时的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think this is far from the "correct" way to do it (the "correct" way on Ubuntu seems to be to stick to a broken and/or outdated OpenCV), but for me building opencv-2.4.6.1 from source brings back cv2.SIFT and cv2.SURF.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安装到主目录中的.opencv-2.4.6.1:

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

构建并安装:

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毫无头绪):

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gnome-keyring警告)，则我有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.

这篇关于无法在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！