Function ComputeEdgeOffsetsOutlineList

deps/tesseract/ccstruct/stepblob.cpp:393–405

Helper calls ComputeEdgeOffsets or ComputeBinaryOffsets recursively on the outline list and its children.

// Helper calls ComputeEdgeOffsets or ComputeBinaryOffsets recursively on the
// outline list and its children.
static void ComputeEdgeOffsetsOutlineList(int threshold, Pix* pix,
                                          C_OUTLINE_LIST *list) {
  C_OUTLINE_IT it(list);
  for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
    C_OUTLINE* outline = it.data();
    if (pix != NULL && pixGetDepth(pix) == 8)
      outline->ComputeEdgeOffsets(threshold, pix);
    else
      outline->ComputeBinaryOffsets();
    if (!outline->child()->empty())
      ComputeEdgeOffsetsOutlineList(threshold, pix, outline->child());
  }
}

// Adds sub-pixel resolution EdgeOffsets for the outlines using greyscale
// if the supplied pix is 8-bit or the binary edges if NULL.