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http://hdl.handle.net/2445/180942
Title: | Reading QR codes on challenging surfaces |
Author: | Martinez Carpena, David |
Director/Tutor: | Benito Altamirano, Ismael Prades García, Juan Daniel |
Keywords: | Teoria de la codificació Codis de correcció d'errors (Teoria de la informació) Programari Treballs de fi de grau Reconeixement òptic de formes Processament d'imatges Coding theory Error-correcting codes (Information theory) Computer software Optical pattern recognition Image processing Bachelor's theses |
Issue Date: | 21-Jun-2020 |
Abstract: | [en] QR Codes are a common way of representing information in a machine-readable format, thanks to its fast reading speed and reliability. The increasing use of this technology has led to one remarkable limitation: the standard algorithms for reading QR Codes assume that the surface where it lies is flat. Therefore, QR Codes that lie non-flat surfaces suffer from slow reading speed and high rate of unsuccessful decoding with the standard algorithms. In this work, we will compare four different correction methods for QR Codes found in challenging surfaces. First, we will implement the method described in the standard of the QR Codes. Secondly, we will study the correction method used in the majority of the commercial readers. Thirdly, we will explore the state of the art for the correction of cylindrical deformations, because it is a common occurrence with some existing solutions. Finally, we will propose using a well-known surface interpolation spline named Thin Plate Spline to target arbitrary deformations. To make this comparison, we will implement a modular library for decoding QR Codes. Using this library we will be able to compare and test the results achieved by each correction method. For making the tests, we will create three different datasets, each with labelled images of QR Codes with different deformations. |
Note: | Treballs Finals de Grau d'Enginyeria Informàtica, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2020, Director: Ismael Benito Altamirano i Juan Daniel Prades García |
URI: | http://hdl.handle.net/2445/180942 |
Appears in Collections: | Programari - Treballs de l'alumnat Treballs Finals de Grau (TFG) - Enginyeria Informàtica |
Files in This Item:
File | Description | Size | Format | |
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codi.zip | Codi font | 73.14 kB | zip | View/Open |
tfg_martinez_carpena_david.pdf | Memòria | 17.03 MB | Adobe PDF | View/Open |
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