[Retracted] Knee Bending Motion Extraction Algorithm for Ball Motion Image Using Vision Sensor

Figure 4

Comparison of extraction effects of different algorithms.

(a) Literature [2] algorithm extracts the results of data set 1 and data set 2

(b) Literature [3] algorithm extracts the results of data set 1 and data set 2

(c) Literature [3] algorithm extracts the results of data set 1 and data set 2

(d) Literature [4] algorithm extracts the results of data set 1 and data set 2

(e) Literature [5] algorithm extracts the results of data set 1 and data set 2

(f) Literature [6] algorithm extracts the results of data set 1 and data set 2