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FengHua0208 2024-11-21 21:16:50 +08:00
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@ -41,9 +41,16 @@ sudo cat /sys/kernel/debug/rknpu/load #查看npu占用
imgshow大约花费3.5ms（单帧图像imgshow的操作） imgshow大约花费3.5ms（单帧图像imgshow的操作）
#### 视频读取分析
使用python opencv读取一段视频，仅进行读取，消耗时间在25ms左右。
![1](./image/1.jpg)
使用c++ opencv读取一段时间，仅进行读取，消耗时间在30ms左右，但也有40ms+和50ms+以及10ms的情况，不太稳定。
![2](./image/2.jpg)
c++不添加指定帧率（cap.set(cv::CAP_PROP_FPS, 30)），读取帧率速度花费时间会很长，不添加指定帧率的情况下读取一帧需要200ms。
![3](./image/3.jpg)

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