Regarding the frame rate of the image, the following statement is correct ().
When the frame rate reaches 20fps , the picture seen by the human eye is continuous.
The human eye does not perceive the difference between a frame rate of 60fps and a frame rate of 30fps.
The human eye does not perceive the difference between a frame rate of 90fps and a frame rate of 60fps.
When the frame rate reaches 30fps, the picture seen by the human eye is continuous.
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