I have the below PNG image and I am trying to identify which box is checked using Python.
我有下面的PNG图像，我试图确定使用Python检查哪个框。
I installed the OMR (optical mark recognition) package https://pypi.python.org/pypi/omr/0.0.7 but it wasn't any help and there wasn't any documentation about OMR. So I need to know if there is any API or useful package I can use with Python.
我安装了OMR（光学标记识别）软件包https://pypi.python.org/pypi/omr/0.0.7，但它没有任何帮助，也没有任何关于OMR的文档。所以我需要知道我是否可以使用任何API或有用的包。
Here is my image:
这是我的形象：
1 个解决方案
#1
3
If you're not afraid of a little experimenting, the Python Imaging Library (PIL, download from http://www.pythonware.com/products/pil/ or your favorite repo. Manual: http://effbot.org/imagingbook/pil-index.htm) permits loading the PNG, and accessing it.
如果您不害怕进行一些实验，可以使用Python成像库（PIL，从http://www.pythonware.com/products/pil/下载或您最喜爱的回购手册：手册：http：//effbot.org/imagingbook /pil-index.htm）允许加载PNG并访问它。
You can extract a section of the image (eg. the interior of a checkbox. See 'crop' in the library), and sum the pixels in that sub-image (see 'point'). Compare that with a threshold (say > 10 pixels = checked).
您可以提取图像的一部分（例如，复选框的内部。请参阅库中的“裁剪”），并对该子图像中的像素求和（请参阅“点”）。将其与阈值进行比较（例如> 10像素=检查）。
If the PNG comes from scanning forms, you may have to add some positional checking.
如果PNG来自扫描表单，您可能需要添加一些位置检查。
#1
3
If you're not afraid of a little experimenting, the Python Imaging Library (PIL, download from http://www.pythonware.com/products/pil/ or your favorite repo. Manual: http://effbot.org/imagingbook/pil-index.htm) permits loading the PNG, and accessing it.
如果您不害怕进行一些实验，可以使用Python成像库（PIL，从http://www.pythonware.com/products/pil/下载或您最喜爱的回购手册：手册：http：//effbot.org/imagingbook /pil-index.htm）允许加载PNG并访问它。
You can extract a section of the image (eg. the interior of a checkbox. See 'crop' in the library), and sum the pixels in that sub-image (see 'point'). Compare that with a threshold (say > 10 pixels = checked).
您可以提取图像的一部分（例如，复选框的内部。请参阅库中的“裁剪”），并对该子图像中的像素求和（请参阅“点”）。将其与阈值进行比较（例如> 10像素=检查）。
If the PNG comes from scanning forms, you may have to add some positional checking.
如果PNG来自扫描表单，您可能需要添加一些位置检查。