Based on the conjugated gradient method, an algorithm was presented for the identification of irregular inner boundary by outer surface thermographic temperature measurement.

• 根据共轭梯度法，提出了根据管道外表面红外测温定量地识别管道内部不规则边界的计算方法，并通过模拟实验研究了测温误差等对内壁边界识别的影响。