code_app/build/linux/HGTest/main.cpp

#include "stdio.h"
#include "base/HGBase.h"
#include "imgfmt/HGPdf.h"
#include "imgfmt/HGImgFmt.h"
#include "imgproc/HGImgProc.h"
#include "imgproc/HGOCR.h"
#include "sane_user/HGSane.h"

int main()
{
    HGOCRMgr ocrMgr = NULL;
    HGImgProc_CreateOCRMgr(HGIMGPROC_OCRALGO_TESSERACT, &ocrMgr);

    HGImage img = NULL;
    HGImgFmt_LoadImage("1.jpg", 0, NULL, HGBASE_IMGTYPE_RGB, HGBASE_IMGORIGIN_TOP, &img);
    if (NULL != img)
    {
        HGUInt direct = 0;
        HGImgProc_ImageTextDirectOCR(ocrMgr, img, &direct);
        char * desc[] = {"", "origin", "right", "left", "180"};
        printf("direct=%s\n", desc[direct]);

        HGBase_DestroyImage(img);
    }

    HGImgProc_DestroyOCRMgr(ocrMgr);
    return 0;
}