Alex Aleluia alexaleluia12

Using Python 3 + Google Cloud Vision API's OCR to extract text from photos and scanned documents

Just a quickie test in Python 3 (using Requests) to see if Google Cloud Vision can be used to effectively OCR a scanned data table and preserve its structure, in the way that products such as ABBYY FineReader can OCR an image and provide Excel-ready output.

The short answer: No. While Cloud Vision provides bounding polygon coordinates in its output, it doesn't provide it at the word or region level, which would be needed to then calculate the data delimiters.

On the other hand, the OCR quality is pretty good, if you just need to identify text anywhere in an image, without regards to its physical coordinates. I've included two examples:

####### 1. A low-resolution photo of road signs

AWS CLI Cheatsheet

http://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html https://www.youtube.com/watch?v=_wiGpBQGCjU

	module.exports = {
	user: 'hr',
	password: 'oracle',
	connectString: 'localhost:1521/orcl',
	poolMax: 20,
	poolMin: 20,
	poolIncrement: 0
	};

	module.exports = {
	user: 'hr',
	password: 'oracle',
	connectString: 'localhost:1521/orcl',
	poolMax: 20,
	poolMin: 20,
	poolIncrement: 0
	};

	{
	"AWSEBDockerrunVersion": "1",
	"Image": {
	"Name": "<AWS_ACCOUNT_ID>.dkr.ecr.us-east-1.amazonaws.com/<NAME>:<TAG>",
	"Update": "true"
	},
	"Ports": [
	{
	"ContainerPort": "443"
	}

	FROM python:2.7-alpine
	MAINTAINER Nick Janetakis <[email protected]>

	ENV INSTALL_PATH /bsawf
	RUN mkdir -p $INSTALL_PATH

	WORKDIR $INSTALL_PATH

	COPY requirements.txt requirements.txt
	RUN apk add --no-cache --virtual .build-deps \

	# font
	# http://chimera.labs.oreilly.com/books/1230000000393/ch02.html#_writing_a_simple_recursive_descent_parser

	"""
	grammar

	expr ::= expr + term
	\| expr - term
	\| term

	# Can I use finditer ?
	# Yes

	# ...

	def generate_tokens(pat, text):
	scanner = pat.finditer(text)
	for i in scanner:
	yield Token(i.lastgroup, i.group())


	// I want to share a tricky thing that happened with me
	// * I was programming in C style using feature of C++ (on g++)
	// I have this structure

	typedef struct {
	vector<float > lst_vertices;
	vector<int > lst_faces;
	float referencia[3];// o ponto sobre o qual vai ser realizadas as transformacoes
	} Obj3d;

	#!/bin/bash

	# to get the list of files to exclude
	# ls -al \| grep ^- \| egrep "^[a-z-]+x " \| grep -v .sh$ \| cut -d' ' -f 9 > arq_exc

	# then

	for i in $(cat arq_exc); do
	rm - $i
	done

Alex Aleluia alexaleluia12

Using Python 3 + Google Cloud Vision API's OCR to extract text from photos and scanned documents

AWS CLI Cheatsheet

Setup