I have installed the necessary tesseract language pack for Japanese and Chinese language but not able to view the language in the gImageReader GUI. Could you please help?
Looks like it is working now.
A description of what you did to get it working would have been useful!
Having a vague understanding of tesseract, I had a look inside the gImageReader folder.
C:\Program Files (x86)\gImageReader\share\tessdata is where the training data needs to be installed.
The README.txt in that directory explains what you need to do
Download the desired language definition
Extract the downloaded file, and place the extracted *.traineddata file inside this folder
If gImageReader is running, select "Redetect Languages" from the application menu, or restart the application