Detecting reading order for non Manhattan layout which has anomalous shape and complicated space relationship is a key problem in research of document image understanding (DIU) and text typesetting.

• 非Manhattan版面中,区域形状不规则及空间关系复杂使得确定合乎视觉脉络的无歧义的文字阅读顺序成为排版及版面理解过程中的一个难点。