LPRNet for recognize both 1-line and 2-line license plate

[hungtrieu07]

Hi guys, I'm working on LPRNet model for recognize the license plate for 4-wheel vehicle. The 1-line license plate just work fine, but 2-line license plate is not. This is some images I captured from my pipeline run with gst-launch-1.0 command:

My pipeline is: Vehicle detection ---> LPD ---> LPR

Are there some suggestion for me to solve this problem?