Allow orientation detection with any traineddata

While orientation and script detection (OSD) normally requires osd.traineddata to detect both, it must also be possible to do only orientation detection with eng.traineddata or any other traineddata. Enforce osd.traineddata only if there was no `-l` command line option. Commit 27ce472 was too restrictive. Signed-off-by: Stefan Weil <[email protected]>
tesseract-ocr · Oct 4, 2018 · 26bfd2b · 26bfd2b
1 parent 6b9f1f1
commit 26bfd2b
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/src/api/tesseractmain.cpp b/src/api/tesseractmain.cpp
@@ -367,11 +367,15 @@ static void ParseArgs(const int argc, char** argv, const char** lang,
   *arg_i = i;
 
   if (*pagesegmode == tesseract::PSM_OSD_ONLY) {
-    // That mode requires osd.traineddata, no other language or script files.
+    // OSD = orientation and script detection.
     if (*lang != nullptr && strcmp(*lang, "osd")) {
-      fprintf(stderr, "Warning, ignoring -l %s for --psm 0\n", *lang);
+      // If the user explicitly specifies a language (other than osd)
+      // or a script, only orientation can be detected.
+      fprintf(stderr, "Warning, detects only orientation with -l %s\n", *lang);
+    } else {
+      // That mode requires osd.traineddata to detect orientation and script.
+      *lang = "osd";
     }
-    *lang = "osd";
   }
 
   if (*outputbase == nullptr && noocr == false) {