CODEWITHSUNDEEP
androidtesseract
Girish Bhutiya
Girish Bhutiya

Reputation: 3127

Tesseract parse image and return null

I have problem in tesseract method. i use below code and my application directly stop.Below is my jni.cpp file.

struct native_data_t {
    native_data_t() : image_obj(NULL), image_buffer(NULL) {}
    tesseract::TessBaseAPI api;
    jbyteArray image_obj;
    jbyte* image_buffer;
    int width, height, bpp;
    char bBWFilter;                 // 0=disable, 1=enable
    char bHorizontalDisplay;
};
native_data_t *nat = get_native_data(env, thiz);
if (nat->api.Init("/sdcard/","eng")) {
        LOGE("could not initialize tesseract!");
        res = JNI_FALSE;
    }

can you help me?And what is datapath in this init method? thanks in advance.

my LogCat is as below.

09-03 11:52:53.186: VERBOSE/MLOG: AssetsManager.java:(2263): isAssetsInstalled(): Assets are already correctly installed
09-03 11:52:53.186: VERBOSE/MLOG: OCR.java:(2263): GetLanguage(): eng
09-03 11:52:53.206: VERBOSE/MLOG: OCR.java:(2263): setLanguage to eng
09-03 11:52:53.206: VERBOSE/MLOG: OCR.java:(2263): noLangs=1
09-03 11:52:53.206: VERBOSE/OcrLib(native)(2263): ocr_open
09-03 11:52:53.206: INFO/OcrLib(native)(2263): lang eng
09-03 11:52:53.246: ERROR/OcrLib(native)(2263): IN BASE CPP
09-03 11:52:53.246: ERROR/OcrLib(native)(2263): IN 2nd if BASE CPP
09-03 11:52:53.326: INFO/ActivityThread(2253): Publishing provider com.google.android.maps.SearchHistoryProvider: com.google.googlenav.provider.SearchHistoryProvider
09-03 11:52:54.076: INFO/ActivityManager(123): Start proc com.android.voicedialer for broadcast com.android.voicedialer/.VoiceDialerReceiver: pid=2274 uid=10016 gids={3002}
09-03 11:52:54.206: INFO/ActivityManager(123): Stopping service: com.android.vending/.util.WorkService
09-03 11:52:54.336: INFO/ActivityManager(123): Process com.temp.unique.ocr (pid 2263) has died.
09-03 11:52:54.366: DEBUG/Zygote(122): Process 2263 exited cleanly (1)
09-03 11:52:54.756: INFO/dalvikvm(2274): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=38)
09-03 11:52:54.766: DEBUG/vending(261): [43] LocalAssetCache.updateOnePackage(): No local info for com.temp.unique.ocr

and my package is com.temp.unique.ocr. My application process is directly died.

Upvotes: 1

Views: 899

Answers (1)

nguyenq
nguyenq

Reputation: 8345

There's already a JNI wrapper for Tesseract 2.04 named Tesjeract. You may want to look at its source code to see how they did it.

The datapath is the path to tessdata folder, which contains all the language data files.

There's also a JNA-based solution named Tess4J, if you're interested.

Upvotes: 1

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