Apply this transformer to rdd
whether need to meet center constraint, i.
whether need to meet center constraint, i.e., the center of gt box need be within image boundary
set the output key to store current transformed result if the key is not set, or same as default, then the transformed result will be overwritted by the following transformer
set the output key to store current transformed result if the key is not set, or same as default, then the transformed result will be overwritted by the following transformer
output key
transform feature
transform mat
transform mat
Project gt boxes onto the coordinate system defined by image boundary
whether need to meet center constraint, i.e., the center of gt box need be within image boundary