修改显示内容为id：速度文本。

TrackingRos.cpp

@@ -823,7 +823,8 @@ void TrackingRos::ThreadTrackingProcess()
                         //sprintf(str, "id:{%llu},type:{%d},type_name:{%s},v:{%.2f}m/s,No:{%s}\ncolor_name:{%s},timestamp:{%llu}",
                         //    obj.obj_id, obj.type, obj.name.c_str(), sqrt(obj.v_x* obj.v_x + obj.v_y * obj.v_y) * 10, obj.license_plate_number.c_str(), obj.color_name.c_str(), obj.frame);
                         // sprintf(str, "%llu",obj.obj_id);
-                        sprintf(str, "%s",obj.color_name.c_str());
+                        // sprintf(str, "%s",obj.color_name.c_str());
+                        sprintf(str,"%llu:%.2f",obj.obj_id,sqrt(obj.v_x* obj.v_x + obj.v_y * obj.v_y) * 10);
                         t_marker.text = str;
                         //t_marker.text = 'id:{0},type:{1},type_name:{2},v:{3:.2f}m/s,No:{4}\ncolor_name:{5},timestamp:{6}'.format(msg.obj_id, msg.type, msg.name, math.sqrt(msg.v_x * msg.v_x + msg.v_y * msg.v_y) * 10, msg.license_plate_number, msg.color_name, msg.frame)
                         sendMarkers.markers.emplace_back(t_marker);