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Disable OSD, add preserve_interword_spaces for chi_sim OCR (#443)

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This commit is contained in:
simon987 2023-12-10 09:20:11 -05:00
parent af5059f366
commit 2936240df8
1 changed files with 11 additions and 2 deletions
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13
third-party/libscan/libscan/ocr/ocr.h vendored
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@ -5,7 +5,7 @@
#include <tesseract/capi.h>
#define MIN_OCR_WIDTH 350
#define MIN_OCR_HEIGHT 100
#define MIN_OCR_HEIGHT 33
#define MIN_OCR_LEN 10
#define OCR_IS_VALID_BPP(d) \
@ -28,7 +28,13 @@ ocr_extract_text(const char *tesseract_path, const char *tesseract_lang,
TessBaseAPI *api = TessBaseAPICreate();
TessBaseAPIInit3(api, tesseract_path, tesseract_lang);
TessBaseAPISetPageSegMode(api, PSM_AUTO_OSD);
// https://github.com/simon987/sist2/issues/443
if (strstr(tesseract_lang, "chi") != NULL) {
TessBaseAPISetVariable(api, "preserve_interword_spaces", "1");
}
// TODO: add this as param?
// TessBaseAPISetPageSegMode(api, PSM_AUTO_OSD);
TessBaseAPISetImage(api, img_buf, img_w, img_h, img_bpp, img_stride);
TessBaseAPISetSourceResolution(api, img_xres);
@ -39,6 +45,9 @@ ocr_extract_text(const char *tesseract_path, const char *tesseract_lang,
if (len >= MIN_OCR_LEN) {
cb(text, len);
}
fprintf(stderr, "OCR: '%s'\n", text);
TessDeleteText(text);
}