说明：  本文主要对于两种基于灰度的角点检测算法进行了分析，并提出了改进的方法。针对SUSAN算子阐值固定、对于X型角点检测能力弱和珑c算子对噪声敏感的不足提出了改进。实验结果表明，改进的算法比以前具有更好的效果。
(In this paper, the two gray level corner detection based algorithm was analyzed, and improved methods. SUSAN operator Threshold for fixed X-type corner detection for weak and Long c operator less sensitive to noise is improved. Experimental results show that the improved algorithm has better results than previously.)