问题
I've installed python packages using the synaptic package manager on Raspberry Pi-2. However, the skimage module version 0.6 is the latest available version in synaptic. Can someone guide me how to upgrade it to 0.11, as certain functions are missing in the older version.
I tried pip install scikit-image, but it gives the output
Running setup.py install for scikit image
and then gets stuck there.
回答1:
I don't think there is anything wrong there. It's just that there is a number of C extensions to compile in scikit-image and it is slow on Raspberry Pi.
For instance, on my laptop with i7 dual core CPU and an SSD, it takes around 5 minutes to install scikit-image from sources. Now if you take into account that the CPU on the RP2 is at least one order of magnitude slower, coupled with a slow SD card, it could take several hours to compile on a RP2.
You can see if you can run the compilations in parallel to speed things up, although I'm not sure if this is doable with pip and C extensions for a python module.
来源：https://stackoverflow.com/questions/29950941/upgrading-skimage-version-on-raspberry-pi