tess-two can't find libpng.so

问题

I have followed building instructions for tess-two on Github

I build tess-two using NDK successfully and imported the library I am trying to run the test application provided on the same repository but whenever the application starts it gives the following exception: That error is caused once new TessBaseAPI(); is called.

dlopen("/data/app-lib/com.datumdroid.android.ocr.simple-2/liblept.so") failed: Cannot load library: soinfo_link_image(linker.cpp:1635): could not load library "libpng.so" needed by "liblept.so"; caused by load_library(linker.cpp:745): library "libpng.so" not found

Can anyone help with that?

回答1:

I have followed suggestion of Dmitry Zaitsev & thannks to him , solved my problem also .

Please update your TessBaseAPI.java from tess-two library project as below :

   static {
        System.loadLibrary("png");
        System.loadLibrary("lept");
        System.loadLibrary("tess");

        nativeClassInit();
     }

Build tess-two project after updating these file . In my case I have build it using eclipse. Hope it should solve your problem as well.

回答2:

It seems like System.loadLibrary("png") call is missing in TessBaseAPI, therefore library can't be found.

Try to call System.loadLibrary("png") before calling new TessBaseAPI(). Typically this is done in static initialization block, like so:

public class MyClass {

    static {
        System.loadLibrary("png");
    }

    public void doStuff() {
        new TessBaseAPI();
    }
}

来源：https://stackoverflow.com/questions/31833308/tess-two-cant-find-libpng-so

标签

android

tesseract

tess-two