LabelMe

筆者：macox
終端程式碼安裝：

brew install qt qt4 || brew install pyqt # qt4 is deprecated（顯示報錯找不到qt4就直接pyqt4）
pip install labelme

Run** labelme –help **for detail.

幾種報錯：

1、第一種

from matplotlib.backends import _macosx
RuntimeError: Python is not installed as a framework. The Mac OS X backend will not
 
 be able to function correctly if Python is not installed as a framework. See the Python documentation for more information on installing Python as a framework on Mac OS X. Please either reinstall Python as a framework, or try one of the other backends. If you are using (Ana)Conda please install python.app and
 
 replace the use of 'python' with 'pythonw'. See 'Working with Matplotlib on OSX' in the Matplotlib FAQ for more information.

解決方法：
vim ~/.matplotlib/matplotlibrc
然後輸入以下內容：
backend: TkAgg
注：
$ vi myfile
進入vi之後，是處於「命令列模式」，您要切換到「插入模式」才能夠輸入文字
i: 「命令列模式」→「插入模式」
ESC: 「插入模式」→「命令列模式」

2）退出

在「命令列模式」下，按一下「：」冒號鍵進入「Last line mode」，例如

w filename （輸入 「w filename」將文章以指定的檔名filename儲存）

wq (輸入「wq」，存檔並退出vi)

q! (輸入q!， 不存檔強制退出vi)

2、第二種

Traceback (most recent call last):
File "/usr/local/bin/labelme", line 7, in <module>
from labelme.app import main
File "/Library/Python/2.7/site-packages/labelme/app.py", line 37, in <module>
from PyQt4.QtGui import *
ImportError: No module named PyQt4.QtGui

解決方法：
**brew uninstall PyQt5
labelme –help**
報錯：ImportError: cannot import name QtCore
* brew install PyQt5 *

如果上面的這個方法後還不行就將下面的程式碼加入～／.bash_profile中：
export PYTHONPATH=/usr/local/lib/python2.7/site-packages:$PYTHONPATH

3、成功

Run** labelme –help **for detail.

Bad key "ckend" on line 1 in
/Users/muaxiu/.matplotlib/matplotlibrc.
You probably need to get an updated matplotlibrc file from
http://github.com/matplotlib/matplotlib/blob/master/matplotlibrc.template
or from the matplotlib source distribution
usage: labelme [-h] [-O OUTPUT] [filename]

positional arguments:
filename image or label filename

optional arguments:
-h, --help show this help message and exit
-O OUTPUT, --output OUTPUT
output label name

操作：

開啟labelme視覺化視窗
labelme # Open GUI
用labelme開啟指定檔案
labelme static/apc2016_obj3.jpg # Specify file
用labelme開啟指定檔案退出後儲存為XX.json檔案
labelme static/apc2016_obj3.jpg -O static/apc2016_obj3.json # Close window after the save

快速檢視json檔案，可以使用實用程式指令碼：
labelme_draw_json static/apc2016_obj3.json
**Convert to Dataset
To convert the json to set of image and label, you can run following:**
labelme_json_to_dataset static/apc2016_obj3.json
即可得到一個資料夾，有四個檔案，*.png,info.yaml,label.png, label_viz.png。
其中label.png即是我們要的label_data.
看起來是全黑的，然而讀到畫素中，是可以看到對相同類別的檔案進行標註了。

筆者還安裝了labelImg,綜合考量選擇了Labelme，以下是LabelImg的安裝過程

LabelImg

Python 2 + Qt4

brew install qt qt4
brew install libxml2
make qt4py2
python labelImg.py
python labelImg.py [IMAGE_PATH] [PRE-DEFINED CLASS FILE]

筆者電腦/裝載軟體：
Mac os
python2.7.13

1.通過Homebrew安裝pyqt

brew install cartr/qt4/pyqt

配置環境變數
whichpython/usr/bin/python$whichpython/usr/bin/python$ which brew
/usr/local/bin/brew
PyQt4是通過brew安裝的，明顯這兩個路徑不一致，導致問題，解決如下：
cd/usr/local/lib/python2.7/site−packages$cd/usr/local/lib/python2.7/site-packages$ ls
open/.bashprofile將下面的代碼加入～／.bashprofile中：exportPYTHONPATH=/usr/local/lib/python2.7/site−packages:$open/.bas{h}_{p}rofile將下面的代碼加入～／.bas{h}_{p}rofile中：exportPYTHONPATH=/usr/local/lib/python2.7/site-packages:$PYTHONPATH
然後關閉terminal，重新開啟，進入python中import：

這樣，PyQt4就裝好了。

2.安裝lxml

sudo pip install lxml

3.安裝labelImg

sudo pip install labelImg
資料夾內：shift+command+G
前往/usr/local/bin/labelImg
開啟labelImg

4.遇到的問題

from PyQt4.QtGui import *
ImportError: No module named PyQt4.QtGui

cd /usr/local/lib/python2.7/site-packages
ls
既有PyQt4也有PyQt5
pip uninstall 所有剛剛裝的重新裝一遍
**解決：**Pyqt5並不相容pyqt4，我覺得你需要把pyqt5改成pyqt4，brew uninstall qt5，先把pyqt5卸掉，然後在裝pyqt4試試

5.使用步驟

1.利用上述方式，建立啟動。
2.擊選單上Change default saved annotation folder
3.點選’Open Dir’
4.點選 ‘Create RectBox’
5.點選左鍵，選擇一個區域來用矩形框註釋
6.用右鍵，拖拽矩形框，複製或移動

這個註釋將被儲存到你指定的資料夾。

Ctrl + u：Load all of the images from a directory
Ctrl + r：Change the default annotation target dir
Ctrl + s：Save
Ctrl + d：Copy the current label and rect box
Space：Flag the current image as verified
w：Create a rect box
d：Next image
a：Previous image
del：Delete the selected rect box
Ctrl++：Zoom in
Ctrl–：Zoom out
↑→↓←：Keyboard arrows to move selected rect box

⇒ python
Python 2.7.10 (default, Feb 7 2017, 00:08:15)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)] on darwin
Type “help”, “copyright”, “credits” or “license” for more information.

from PyQt4 import QtCore, QtGui ,QtNetwork
quit()