emptyAsync static method
returns a new SIFT algorithm
For further details, please see: https://docs.opencv.org/master/d5/d3c/classcv_1_1xfeatures2d_1_1SIFT.html
Implementation
static Future<SIFT> emptyAsync() async =>
cvRunAsync(cffi.SIFT_Create_Async, (c, p) => c.complete(SIFT.fromPointer(p.cast<cvg.SIFT>())));