请你为我的毕业论文润色改写使其更具逻辑性和学术性你改写后再检查一遍你改写的内容中是否还存在错别字等错误以确保你回答的文本没有任何错误。接下来我会每次给你一个语段你只需要回答你改写的最终版即可。 双阶段检测器通常分为两步：第一步先在图像中找出候选区域第二步则是对候选区域进行分类识别和回归定位。通常由于有再次修正的机制两阶段的精度相对更高但是两个阶段的设计使得检测速度相对较慢。

The two-stage detector is usually divided into two steps: the first step is to find candidate regions in the image, and the second step is to classify, recognize, and locate the candidate regions. Due to the mechanism of further correction, the accuracy of the two-stage detector is relatively higher. However, the design of the two stages results in a relatively slow detection speed.