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https://gitcode.com/cann/ops-cv/blob/master/objdetect/background_replace/docs/aclnnBackgroundReplace.md 建议排查，应该不止上面这一个链接
Thanks for sending an issue! Please fill in the following template to help quickly solve your problem.
Document Link（文档链接）
https://gitcode.com/cann/ops-cv/blob/master/objdetect/background_replace/docs/aclnnBackgroundReplace.md
建议排查，应该不止上面这一个链接
Issues Section（问题文档片段）
Existing Issues（存在的问题）