run multiple tesseract instances in parallel not returning any result

[Mohamed KAFFEL]

Hello ,

I'm writing a python script where I use multiproccesing library to launch  multiple tesseract instances in parallel.

when I use multiple calls to tesseract but in sequence using loop ,it works .However ,when I try to parallel code everything looks fine but  I'm not getting any results.

Here's my code :

  

def processPage(i):

    

 

    nameJPG="converted-"+str(i)+".jpg"

    nameHocr="converted-"+str(i)

    p=subprocess.check_call(["tesseract",nameJPG,nameHocr,"-l","eng","hocr"])

    print "tesseract did the job for the ",str(i+1),"page" 

pool1=Pool(4)

    pool1.map(processPage, range(len(pdf.pages)))