中文说明：图像分割是图像压缩的前级处理。我们希望有三个优势，在图像分割。首先是速度。第二个是它的分段成绩良好的连接。三是良好的匹配。此外，我们推出许多分割方法，包括技术门槛，数据聚类，区域生长，区域合并和分割，均值漂移和分水岭。同时，我们也比较优势和优点。因为他们的一些缺点，笔者创建了快速扫描算法，以改善这些缺点，使用自适应阈值决定，以改善他创造了快速扫描算法的效率
English Description：
Image segmentation is the front-stage processing of image compression. We hope that there are three advantages in image segmentation. The first is the speed. The second is good shape connectivity of its segmenting result. The third is good shape matching. Besides, we introduce many segmenting methods including threshold technique,data clustering, region growing, region merging and splitting, mean shift, and watershed. At the same time, we also compare advantages and advantages. Because of some disadvantages of them, the author creates fast scanning algorithm to improve those disadvantages and use an adaptive threshold decision to improve the efficiency of fast scanning algorithm he created