+typedef const struct OcrGlyphContextDeveloperInfo *OcrCellContext;
+extern const struct OcrGlyphContextDeveloperInfo *ocr_celltype_text;
+extern const struct OcrGlyphContextDeveloperInfo *ocr_celltype_number;
+
+typedef struct OcrReader OcrReader;
+OcrReader *ocr_init(int h);
+
+OcrResultGlyph *ocr(OcrReader *rd, int w, Pixcol cols[]);