How do I use DETRAC data

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The annotation of the Detrac data and VOC is not the same, it is a set of pictures corresponding to an xml file, as shown below. ?xml version="1.0" encoding="utf-8" ?

• sequence name="MVI_63525" sequence_attribute camera_state="stable" sence_weather="rainy" />
• <ignored_region <box left="0.5" top="16.75" width="48.75" height="33.5" / <box left="77.75" top="0.5" width="70.5" height="42.75" / </ignored_region
• <frame density="4" num="1"
• <target_list
• <target id="1" <box left="667.73" top="190.93" width="135.4" height="131.14" / <attribute orientation="201.22" speed="11.786" trajectory_length="46" truncation_ratio="0" vehicle_type="car" / </target
• <target id="2" <box left="198.4" top="62.933" width="72.47" height="69.267" / <attribute orientation="345.96" speed="2.199" trajectory_length="76" truncation_ratio="0" vehicle_type="car" / </target
• <target id="3" <box left="280.53" top="1" width="130.07" height="50.133" / <attribute orientation="319.4" speed="1.9668" trajectory_length="936" truncation_ratio="0.5" vehicle_type="bus" / </target
• <target id="4" <box left="438.4" top="1" width="51.13" height="17.067" / <attribute orientation="307.87" speed="1.2162" trajectory_length="101" truncation_ratio="0.73356" vehicle_type="car" / </target </target_list </frame
• <frame density="4" num="2"
• <target_list
• <target id="1" <box left="664.96" top="182.19" width="132.41" height="126.65" / <attribute orientation="201.22" speed="11.786" trajectory_length="46" truncation_ratio="0" vehicle_type="car" / </target
• <target id="2" <box left="198.4" top="64.853" width="71.4" height="69.697" / <attribute orientation="345.96" speed="2.199" trajectory_length="76" truncation_ratio="0" vehicle_type="car" / </target
• <target id="3" <box left="279.25" top="1" width="130.07" height="53.12" / <attribute orientation="319.4" speed="1.9668" trajectory_length="936" truncation_ratio="0.49519" vehicle_type="bus" / </target
• <target id="4" <box left="437.12" top="1" width="51.77" height="18.56" / <attribute orientation="307.87" speed="1.2162" trajectory_length="101" truncation_ratio="0.70138" vehicle_type="car" / </target </target_list </frame ......................and so on Can these data be used?