During key frame extraction, the concept of image entropy is used after shot being segmented into sub-shots.
在关键帧提取阶段，将镜头分割为子镜头后，引入图像熵的概念提取关键帧。
The segmented linear temperature control system is the key part of oil flashpoint measuring instrument. It's the key link to guarantee the oil flashpoint testing condition.
分段式线性控温系统是石油闪点测定仪的核心部分，是确保石油闪点测试条件的关键环节。
At first, the video clips are segmented into shots and the shot key frames are extracted.
该算法首先将视频分割为镜头，并提取镜头的关键帧。
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