OCR REST - Jython, Web Dev?

Ignition
29

Worked with Patrick to get the example code working with system.net.httpClient() - we had to move the username/password to the actual post call, instead of calling it on the client - Java’s HTTPClient only returns authentication if the server returns a specific WWW-Authenticate header. If you specify a username and password on the actual request, it’ll get parsed into a (basic auth) Authentication header for you.

# import shutil

"""
	Sample project for OCRWebService.com (REST API).
	Extract text from scanned images and PDF documents and convert into editable formats.
	Please create new account with ocrwebservice.com via http://www.ocrwebservice.com/account/signup and get license code
"""

# Provide your username and license code
LicenseCode = '<username>'
UserName =  'license code'

"""

		You should specify OCR settings. See full description http://www.ocrwebservice.com/service/restguide
		 
		Input parameters:
		 
	[language]     - Specifies the recognition language. 
			This parameter can contain several language names separated with commas. 
						For example "language=english,german,spanish".
			Optional parameter. By default:english
		
	[pagerange]    - Enter page numbers and/or page ranges separated by commas. 
			For example "pagerange=1,3,5-12" or "pagerange=allpages".
						Optional parameter. By default:allpages
		 
		[tobw]	      - Convert image to black and white (recommend for color image and photo). 
			For example "tobw=false"
						Optional parameter. By default:false
		 
		[zone]         - Specifies the region on the image for zonal OCR. 
			The coordinates in pixels relative to the left top corner in the following format: top:left:height:width. 
			This parameter can contain several zones separated with commas. 
				For example "zone=0:0:100:100,50:50:50:50"
						Optional parameter.
		  
		[outputformat] - Specifies the output file format.
						Can be specified up to two output formats, separated with commas.
			For example "outputformat=pdf,txt"
						Optional parameter. By default:doc

		[gettext]	- Specifies that extracted text will be returned.
			For example "tobw=true"
						Optional parameter. By default:false
		
		[description]  - Specifies your task description. Will be returned in response.
						Optional parameter. 


	!!!!  For getting result you must specify "gettext" or "outputformat" !!!!  

"""

# Build your OCR:

# Extract text with English language by default
RequestUrl = "https://www.ocrwebservice.com/restservices/processDocument?gettext=true";
client = system.net.httpClient()

# Extract text with English and german language using zonal OCR
#RequestUrl = 'http://www.ocrwebservice.com/restservices/processDocument?language=english,german&zone=0:0:600:400,500:1000:150:400';

# Convert first 5 pages of multipage document into doc and txt
# RequestUrl = 'http://www.ocrwebservice.com/restservices/processDocument?language=english&pagerange=1-5&outputformat=doc,txt';

#Full path to uploaded document
FilePath = "C:\\test_image.jpg"
	
r = client.post(RequestUrl, file=FilePath, username=UserName, password=LicenseCode)

if r.statusCode == 401:
	#Please provide valid username and license code
	print("Unauthorized request")
	exit()

# Decode Output response
jobj = r.json

ocrError = str(jobj["ErrorMessage"])

if ocrError != '':
	#Error occurs during recognition
	print ("Recognition Error: " + ocrError)
	exit()


# Task description
print("Task Description:" + str(jobj["TaskDescription"]))

# Available pages 
print("Available Pages:" + str(jobj["AvailablePages"]))

# Processed pages 
print("Processed Pages:" + str(jobj["ProcessedPages"]))

# For zonal or multipage OCR: OCRText[z][p]    z - zone, p - pages

# Extracted text from first or single page
# print("Extracted Text:" + str(jobj["OCRText"][0][0]))

# Extracted text from second page (if multipage doc converted)
#print("Extracted Text:" + str(jobj["OCRText"][0][1]))

# Get extracted text from First zone for each page
# print("Zone 1 Page 1 Text:" + str(jobj["OCRText"][0][0]))
# print("Zone 1 Page 2 Text:" + str(jobj["OCRText"][0][1]))

# Get extracted text from Second zone for each page
#print("Zone 2 Page 1 Text:" + str(jobj["OCRText"][1][0]))
#print("Zone 2 Page 2 Text:" + str(jobj["OCRText"][1][1]))

#Download output file (if outputformat was specified)
system.file.writeFile("outputDoc.doc", client.get(jobj["OutputFileUrl"]).body)
#file_response = requests.get(jobj["OutputFileUrl"], stream=True)
#with open("outputDoc.doc", 'wb') as output_file:
#   shutil.copyfileobj(file_response.raw, output_file)
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