On a recent journey into the Google ML KIT, by installing Lineage OS , (an android build for raspberry pi). We found that the OCR detection is very slow and feeble.
The main reason for this performance degradation, the hardware incompatibility.
ML KIT though claims to be hardware agnostic and promises to perform fast in all popular hardware.
Our investigation found that ML kit is very much depended on hardware and thus takes a longer time to get result when compared to a smartphone.
Further investigation is going on and will update as soon as we found a definite solution.