采用间接差分法能更好地选择阈值进行二值化，对图像进行镜像处理使得不同行走方向的步态轮廓之间具有可比性。
Indirect Difference method made it easier to choose a threshold while getting the binary image. Mirroring image made it comparable between the images in different direction.
因此，数据库历史数据存储在一个 ASCII 文件中，并放在备份镜像中，我们可以从中检索和处理它。
Therefore, the database history is stored in an ASCII file and included in the backup image where we can retrieve and process it.
否则，您可能会遇到内存不足问题，特别是在处理固件镜像时。
Otherwise, you may encounter out-of-memory errors, especially when dealing with firmware images.
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