Name: FLÁVIO MACHADO

Publication date: 08/10/2020
Advisor:

Namesort descending Role
RAQUEL FRIZERA VASSALLO Advisor *

Examining board:

Namesort descending Role
DANIEL CRUZ CAVALIÉRI External Examiner *
PATRICK MARQUES CIARELLI Internal Examiner *
RAQUEL FRIZERA VASSALLO Advisor *

Summary: Draft survey is the process used to determine the amount of bulk cargo of a ship. Its main step is the draft reading, and although many have tried to automate this process in controlled conditions, it remains manual and labor-intense. This still happens because past automatic reading methods ignored non-ideal conditions, which are extremely common to the task, such as barnacles and sludge on the ship’s hull, weather conditions, along with
others. This paper presents a new complete pipeline for this process automation using two common deep learning architectures for the waterline identification and draft marks reading, and a new draft comprehension heuristic to unite these information. In contrast to other works, we compare these techniques to the state of the art and also captured a dataset with
various non-ideal conditions, which are common to the real scenarios, to train and test our solution. The results presented are promising, with the pipeline obtaining a median error of 7, 0 cm and an error inferior to 20 cm in 84% of the 800+ test images. These results are a step closer to the complete automatic draft reading in real situations, which will provide more security, agility and transparency to the execution of this task by those professionals.

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