BRISK.empty constructor
BRISK.empty()
returns a new BRISK algorithm
For further details, please see: https://docs.opencv.org/master/d8/d30/classcv_1_1AKAZE.html
Implementation
factory BRISK.empty() {
final p = calloc<cvg.BRISK>();
cvRun(() => cffi.BRISK_Create(p));
return BRISK._(p);
}