文章在讨论基于节点位移的可变形块运动模型的基础上,分析了NS-DBMA的搜索过程和流程,从而提出了带有阀值的基于节点搜索的可变形块运动估计算法(TNS-DBMA)。以四节点模型为例,详细研究了该算法的流程,并利用两个序列进行测试,测试结果表明,TNS-DBMA算法的预测图像效果与NS-DBMA算法接近,但它的运算量大大的减少,比NS-DBMA算法减少一半多。 Based on the discussion of the motion model of the deformable blocks based on the nodal displacements, the article analyzes the searching process and flow of the NS-DBMA, and then proposes a deformable block motion estimation algorithm (TNS-DBMA) . Taking the four-node model as an example, the flow of the algorithm is studied in detail and tested with two sequences. The test results show that the prediction performance of TNS-DBMA algorithm is close to that of NS-DBMA algorithm, but its computational cost is greatly reduced , Less than half the NS-DBMA algorithm.