Research Article

Key Frame Extraction for Sports Training Based on Improved Deep Learning

Table 1

bwmorph morphological operations on images.

OperationDescription

Botha’It is a morphological “bottom cap” transformation operation, and the returned image is the original image minus the morphological closing operation (closing operation: first expand and then corrode)
BridgeDisconnected pixels: the value pixel is set to 1 if it has two nonzero unconnected (8 neighborhood) pixels
CleanRemove isolated pixels (by О 1)
ClosePerform morphological closing operation (expansion before corrosion)
DiagThe diagonal filling is used to eliminate the 8 connected regions in the background
DilateThe structure ones (3) are used to perform the expansion operation
ErodeThe structure ones (3) are used to perform the corrosion operation
FillFill in isolated internal pixels (0 surrounded by 1)