How to measure intensity of auto selected range in gel automatically

Hello everyone,is it possible to auto selec ROI in gel and then to measure intensity of it.
For example, i want select 400-500bp range of lane just like this picture,then it will select 400-500bp range of lane


and then measure intensity of selected range.
Question1: Is it possible to auto selec ROI in gel
Question2: is it possible to auto measure intensity of ROI

Is there any suggestion?TKS…