OCR links

Today ycombination has a discussion about OCR open sources. Here are some links and product names for future reference.

ocrad.js
Tesseract with OpenCV

Torch or Caffe
https://github.com/nyanp/tiny-cnn

https://ocr.a9t9.com/

Abbyy
Omnipage
Finereader engine Abbyy for Linux looks fine
http://ocrsdk.com/plans-and-pricing/

[0] http://docs.opencv.org/3.0-beta/modules/text/doc/erfilter.ht...
[1] https://github.com/Itseez/opencv_contrib/blob/master/modules...
[2] https://github.com/Itseez/opencv_contrib/blob/master/modules...
[3] http://cmp.felk.cvut.cz/~neumalu1/neumann-cvpr2012.pdf

dlib's face detection is the best of the open-source libs, in my experience.
http://blog.dlib.net/2014/02/dlib-186-released-make-your-own...

https://github.com/creatale/node-fv
The accuracy of GOCR is very high and it doesn't require any learning.
http://manpages.ubuntu.com/manpages/dapper/man1/gocr.1.html
https://github.com/tmbdev/ocropy

https://github.com/openalpr/openalpr

http://sourceforge.net/projects/tirg/
http://libccv.org/doc/doc-swt/
https://github.com/tesseract-ocr/tesseract
https://github.com/BVLC/caffe/tree/dev/examples/mnist
https://github.com/pannous/caffe-ocr
https://wiki.apache.org/tika/TikaOCR

bash: express: command not found

After I installed express using npm install express -g

I tried to run to check the installed version
express -V

But I got
bash: express: command not found

http://expressjs.com/guide/migrating-4.html#app-gen
explains starting express v4.0, user needs to install express-generator to get express command line works well.
npm install -g express-generator

upgrade nodejs

There is a very easy way of managing your node version, using the Node binary manager module ‘n’. Another one is 'nvm' node versioning manager.

sudo npm cache clean -f  [this one doesn't work well on my Mac OSX]
sudo npm install -g n [install node binary manager]
sudo n stable [install stable version, or specify version # here like 0.10.28]

With regard to installing node, I prefer to use the homebrew package manager to install node
brew install node

node -v [check node version]
n [to list out all current installed versions, and select node version]

Reference
http://davidwalsh.name/upgrade-nodejs