自由虚拟实景空间是能够自由操纵的虚拟实景空间。
Free image-based virtual space (FIBVS) is a kind of this virtual space where users can manipulate freely.
试验结果表明，用户在自由虚拟实景空间中能够自由地操纵虚拟空间。
The experimental results show that users can manipulate space freely in FIBVS.
试验结果表明，用户在自由虚拟实景空间中能够自由地操纵虚拟空间。
The experimental results show that users can manipulate space freely in FIBVS.
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