Understanding Event Response Data for License Plate Recognition

Event response \ Event response data example

Response contains XML document, data fields are as follows:
Field
Description
TS

Event timestamp, Unix timestamp, UTC, milliseconds
MOD_TS
Event timestamp, human readable
CAR_ID
Vehicle ID, per database id
LPR
Number plate as text
RTIME
License plate recognition duration, ms
ACTION
Barrier action taken : 0= "no action", 1 = "opened"
ACT_PARAM
deprecated
THRESHOLD
Recognition confidence value, float
ROI_X
ROI coordinates and dimensions
ROI_Y
ROI_W
ROI_H
LP_X
Number plate crop coordinates and dimensions
LP_Y
LP_W
LP_H
LP_BMP
URL of a plate image stored on a camera
ROI_BMP
URL of a ROI image stored on a camera, if enabled
COUNTRY
Alpha3 ISO3166 country code
https://en.wikipedia.org/wiki/ISO_31661_alpha3
ROI_ID
ROI number, ACAP is supporting 2 ROI inthe frame
ROI_IDU
reserved
FRAMES
reserved
DISTANCE
reserved
SPEED
reserved
DIRECTION
2 IN   3 OUT    0,1- UNKNOWN

    
Event response data example
<event>
<TS>1528371395804689</TS>
<MOD_TS>2023-05-17 14:36:36 TRT</MOD_TS>
<CAR_ID>66948</CAR_ID>
<LPR>2AN2563</LPR>
<RTIME>150.0</RTIME>
<ACTION>0</ACTION>
<ACT_PARAM></ACT_PARAM>
<THRESHOLD>0.717648804187775</THRESHOLD>
<ROI_X>53</ROI_X>
<ROI_Y>54</ROI_Y>
<ROI_W>1728</ROI_W>
<ROI_H>972</ROI_H>
<LP_X>1501</LP_X>
<LP_Y>288</LP_Y>
<LP_W>168</LP_W>
<LP_H>28</LP_H>
<ROI_ID>1</ROI_ID>
<ROI_IDU>0</ROI_IDU>
<FRAMES>0</FRAMES>
<DISTANCE>0</DISTANCE>
<SPEED>0</SPEED>
<DIRECTION>1</DIRECTION>
<LP_BMP>tools.cgi?action=getImage&amp;name=45/20230517143636_205385lp_2AN2563_2176954.png</LP_BMP>
<ROI_BMP>tools.cgi?action=getImage&amp;name=44/20230517143635_805012lp_2AN2563_2176951.png</ROI_BMP>
<COUNTRY>CZE</COUNTRY>
</event>





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