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Advances, Systems and Applications

Table 2 The table presents an evaluation of the accuracy of various frame sequences when both resolutions and selected frames are simultaneously lowered. This reduction mitigates computational complexity. Reducing resolutions and frames simultaneously does not result in a significant decrease in accuracy diversity

From: Recognizing sports activities from video frames using deformable convolution and adaptive multiscale features

No. Selected frames

UCF sport

YouTube (UCF11)

UCF50

Resolution

Accuracy

Computational

complexity

Resolution

Accuracy

Computational

complexity

Resolution

Accuracy

Computational

complexity

One of two frames

100%

97.84%

High

100%

98.90%

High

100%

97.75%

High

One of three frames

90%

97.70%

High

90%

98.81%

High

90%

97.70%

High

One of four frames

80%

97.43%

Moderate

80%

98.73%

Moderate

80%

97.65%

Moderate

One of five frames

70%

97.03%

Moderate

70%

98.65%

Moderate

70%

97.61%

Moderate

One of six frames

60%

96.90%

Moderate

60%

98.42%

Moderate

60%

97.57%

Moderate

One of seven frames

50%

96.81%

Low

50%

98.38%

Low

50%

97.50%

Low

One of eight frames

40%

96.55%

Low

40%

98.29%

Low

40%

97.40%

Low

One of nine frames

30%

96.50%

Low

30%

98.19%

Low

30%

97.25%

Low

One of ten frames

20%

96.44%

Low

20%

98.08%

Low

20%

97.11%

Low