Ubuntu 18.04 error install tesseract

Question

I've installed Ubuntu 18.04.

I've installed tesseract using sudo apt-get install tesseract-ocr

When I type:

tesseract -v

I had an error:

tesseract: symbol lookup error: /usr/lib/x86_64-linux-gnu/libtesseract.so.4: undefined symbol: pixaDisplayTiledInColumns

Below is the output of apt-cache policy tesseract-ocr:

Installed: 4.00~git2288-10f4998a-2
Candidate: 4.00~git2288-10f4998a-2 
Version table: 
   *** 4.00~git2288-10f4998a-2 500 
          500 in.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 
          100 /var/lib/dpkg/status

Answer 1

This is a bug of tesseract package, which is found in release 4.00~git2481-555f6ffc-1. Do this:

sudo apt install libtesseract-dev libleptonica-dev liblept5
tesseract -v

If it did not help, just build tesseract from source...

Update 1: You can do

sudo apt purge tesseract* libtesseract*
sudo apt autoremove --purge

to remove everything that belongs to tesseract with configurations. However, it may also remove dependant packages, such as opencv (depends to libtesseract4)

Answer 2

On my clean Ubuntu 18.04 LTS VM with all updates Tesseract installs without any issues.
So it is completely operable.
The linked bug by @Olimjon is not related to current problem as it was reported after 18.04 LTS feature freeze.

On my system I have done the following:

$ sudo apt install tesseract-ocr -y

and got

$ tesseract -v
tesseract 4.0.0-beta.1
 leptonica-1.75.3
  libgif 5.1.4 : libjpeg 8d (libjpeg-turbo 1.5.2) : libpng 1.6.34 : libtiff 4.0.9 : zlib 1.2.11 : libwebp 0.6.1 : libopenjp2 2.3.0

 Found AVX
 Found SSE

$ apt-cache policy tesseract-ocr
tesseract-ocr:
  Installed: 4.00~git2288-10f4998a-2
  Candidate: 4.00~git2288-10f4998a-2
  Version table:
 *** 4.00~git2288-10f4998a-2 500
        500 http://archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
        100 /var/lib/dpkg/status

So, if @mayurpanchal really want to solve Tesseract problem - then please update all packages in your system and install tesseract-ocr again and add requested output of ldd /usr/lib/x86_64-linux-gnu/libtesseract.so.4 to the question.
It may be PPA or third-party libraries issue.

Answer 3

Here is the solution for ubuntu 18.04

Please first install the libraries which are required for tesseract-ocr

sudo apt install libtesseract-dev libleptonica-dev liblept5

Then simply install tesseract using command

sudo apt install tesseract-ocr -y