vehicle_optical_flow_vel (UORB message)

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uint64 timestamp                       # time since system start (microseconds)
uint64 timestamp_sample                # the timestamp of the raw data (microseconds)

float32[2] vel_body                    # velocity obtained from gyro-compensated and distance-scaled optical flow raw measurements in body frame(m/s)
float32[2] vel_ne                      # same as vel_body but in local frame (m/s)

float32[2] flow_uncompensated_integral # integrated optical flow measurement (rad)
float32[2] flow_compensated_integral   # integrated optical flow measurement compensated for angular motion (rad)

float32[3] gyro_rate                   # gyro measurement synchronized with flow measurements (rad/s)
float32[3] gyro_rate_integral          # gyro measurement integrated to flow rate and synchronized with flow measurements (rad)

# TOPICS estimator_optical_flow_vel vehicle_optical_flow_vel