Apply this transformer to rdd
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
Resize the image, keep the aspect ratio. scale according to the short edge