提出一种局部遮挡目标的识别方法。该方法利用多边形近似方法将目标轮廓分段，抽取目标轮廓每一小段的不变矩作特征，利用动态规划技术在段间距离表中寻找最佳路径，确定所有的匹配对，这些匹配对序列构成了目标与模型的局部匹配，可从局部匹配中计算匹配可信度。该方法简单、有效、抗噪声能力较强，是一种较好的局部目标识别方法。 A method to identify the local occlusion target is proposed. This method uses the polygon approximation method to segment the target contour and extract the invariant moments of each segment of the target contour as features. The dynamic programming technique is used to find the best path in the segment distance table and determine all the matching pairs. Constitute the target and the model of local matching, matching matching can be calculated from the local credibility. The method is simple, effective and robust against noise. It is a good method for local target recognition.