Introduction

this program is to provide several basic service with django

Available service

1. chinese sentiment(using snownlp)
2. signature for image(using imagehash)
3. image's color histogram
4. image ocr service
5. text speech act classification

usage

pip -r requirements.txt cd olnlp python manage.py runserver 0.0.0.0:8000

##API chinese sentiment: POST -- http://ip:port/snow/ {'text':text}
image signature: POST -- http://ip:port/image/ {'image':url}
image histgram: POST -- http://ip:port/hist/ {'image':url} ocr(both english and chinese): POST -- http://ip:port/ocr/ {'image':url}

Notice

For GET method, there is so much limitation about the text such as symbols. We can simplely deactive csrf. Otherwise we need to use other framework.

dhash

1. Grayscale the image
2. shrink the image to a common size (9*8)
3. compare adjacent pixels if bigger
4. get boolean matrix and change it to a hash signature.

[tesseract-ocr]

1. dependency for ocr service
2. install command: sudo apt-get install tesseract-ocr && sudo apt-get install tesseract-ocr-chi-sim (model and data version should be matched.)