Tessract1 in multithreading

[renjitha nair]

Hi,

Try to execute a long list of files using tess4j  with Tesseract1 in multithread environment [using eclipse jobs api ] ,

Then some of the files failed due to  “Invalid Memory Exception”  , Other files are executed succesfully.

Please help to resolve this issue.

Execution env used in my project:

Java 7

JVM 32bit

OS 64 bit

 Thanks,

Renjitha

[Quan Nguyen]

Could they be bad images? Can you reprocess them in subsequent runs?

[renjitha nair]

Thank you for ur update :)

Actually image is not bad, my project is a pdf splitter so try to process the scanned pdf page contain single image per page, so the image size may be larger.

When i execute the failed files alone then it executed successfully...

This issue comes when executing a set files using thread...

Thanks,

Renjitha 

[Jeryl Cook]

On Wednesday, May 7, 2014 at 7:07:32 AM UTC-4, renjitha nair wrote:

Hi,

Try to execute a long list of files using tess4j  with Tesseract1 in multithread environment [using eclipse jobs api ] ,

Then some of the files failed due to  “Invalid Memory Exception”  , Other files are executed succesfully.

Please help to resolve this issue.

i have this same issue, Tesseract does not appear to be thread-safe.

[Quan Nguyen]

I had success running multi-threaded examples with Tess4J 2.0.0 Beta, which is based on Tesseract 3.03RC.

http://sourceforge.net/p/tess4j/discussion/1202293/thread/4562eccb/
http://sourceforge.net/p/tess4j/discussion/1202294/thread/55c2e865/

[Dattatraya Tembare]

Thanks! for these examples, but they pretty old. I think there may be something inbuilt in new versions. 

I'm looking something like this with a new version, if there are any new examples please share.

I'm using tesseract on windows 64 bit.

C:\Users>tesseract --version

tesseract 4.0.0-alpha.20180109

 leptonica-1.74.4

  libgif 4.1.6(?) : libjpeg 8d (libjpeg-turbo 1.5.0) : libpng 1.6.24 : libtiff 4.0.6 : zlib 1.2.8 : libwebp 0.4.3 : libopenjp2 2.1.0

Expecting for input source as an array of File or array of BufferedImage and output will be array/map of String

Thanks!

Datta

[Dattatraya Tembare]

Thanks! for these examples, but they pretty old. I think there may be something inbuilt in new versions. 

I'm looking something like this with a new version, if there are any new examples please share.

I'm using tesseract on windows 64 bit.

C:\Users>tesseract --version

tesseract 4.0.0-alpha.20180109

 leptonica-1.74.4

  libgif 4.1.6(?) : libjpeg 8d (libjpeg-turbo 1.5.0) : libpng 1.6.24 : libtiff 4.0.6 : zlib 1.2.8 : libwebp 0.4.3 : libopenjp2 2.1.0

AND 

<dependency>

<groupId>net.sourceforge.tess4j</groupId>

<artifactId>tess4j</artifactId>

<version>4.0.1</version>

</dependency>

 

Expecting for input source as an array of File or array of BufferedImage and output will be array/map of String

Thanks!

Datta

On Wednesday, March 11, 2015 at 7:58:10 PM UTC-4, Quan Nguyen wrote:

I had success running multi-threaded examples with Tess4J 2.0.0 Beta, which is based on Tesseract 3.03RC.

http://sourceforge.net/p/tess4j/discussion/1202293/thread/4562eccb/
http://sourceforge.net/p/tess4j/discussion/1202294/thread/55c2e865/

On Wednesday, March 11, 2015 at 2:41:30 AM UTC-5, Jeryl Cook wrote:

On Wednesday, May 7, 2014 at 7:07:32 AM UTC-4, renjitha nair wrote:

Hi,

Try to execute a long list of files using tess4j  with Tesseract1 in multithread environment [using eclipse jobs api ] ,

Then some of the files failed due to  “Invalid Memory Exception”  , Other files are executed succesfully.

Please help to resolve this issue.

i have this same issue, Tesseract does not appear to be thread-safe.

Execution env used in my project:

Java 7

JVM 32bit

OS 64 bit

 Thanks,

Renjitha

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Best Regards,
Dattatraya Tembare

+1 914 721 6311