Bruno Patrão received the M.Sc. in Visual Information Technologies from Department of Electrical and Computer Engineering of University of Coimbra.The field of his M.Sc. dissertation was in Computer Vision, entitled 'Augmented Reality System based on Binary Patterns.
Projects
TrustStamp
This project intends to develop verification tools to be applied on INCM trust stamps, to confirm au...
TrustFaces
The TrustFaces project derives from the TrustStamp project, completed in June 2018, in partnership w...
UniQode
Este projeto é a continuação do projeto TrustStamp, alargando o seu âmbito e permitindo dar resposta...
Publications
An Application of a Halftone Pattern Coding in Augmented Reality
Presentation of a coding system using a halftone pattern (with black and white pixels) capable to be integrated into markers that encode information that can be retrieved a posteriori and used in the creation of augmented reality applications. These markers can be easily detected in a photo and the encoded information is the basis for parameterizing various types of augmented reality applications.
- Date: 30/11/2017
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- Featured In: SIGGRAPH Asia 2017
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- Publication Type: Conference Papers
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- Author(s): Bruno Patrão, Leandro Cruz, Nuno Gonçalves
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- DOI: 10.1145/3145690.3145705
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Halftone Pattern: A New Steganographic Approach
Presentation of a steganographic technique to hide a textual information into an image. It is inspired by the use of dithering to create halftone images. It begins from a base image and creates the coded image by associating each base image pixel to a set of two-colors pixels (halftone) forming an appropriate pattern. The coded image is a machine readable information, with good aesthetic, secure and containing data redundancy and compression.
- Date: 03/07/2018
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- Featured In: Eurographics 2018
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- Publication Type: Conference Papers
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- Author(s): Bruno Patrão, Leandro Cruz, Nuno Gonçalves
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Graphic Code: Creation, Detection and Recognition
Graphic Code is a new Machine Readable Coding (MRC) method. It creates coded images by organizing available primitive graphic units arranged according to some predefined patterns. Some of these patterns are previously associated with symbols used to compose the messages and to define a dictionary.
- Date: 26/10/2018
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- Featured In: Recpad 2018-24th Portuguese Conference on Pattern Recognition
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- Publication Type: Poster
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- Author(s): Leandro Cruz, Bruno Patrão, Nuno Gonçalves
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Large Scale Information Marker Coding for Augmented Reality Using Graphic Code
The main advantage of using this approach as an Augmented Reality marker is the possibility of creating generic applications that can read and decode these Graphic Code markers, which might contain 3D models and complex scenes encoded in it. Additionally, the resulting marker has strong aesthetic characteristics associated to it once it is generated from any chosen base image.
- Date: 10/12/2018
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- Featured In: IEEE International Conference on Artificial Intelligence and Virtual Reality (AIVR)
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- Publication Type: Conference Papers
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- Author(s): Leandro Cruz, Bruno Patrão, Nuno Gonçalves
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An Augmented Reality Application Using Graphic Code Markers
Presenting applications of the Graphic Code, exploiting its large-scale information coding capabilities applied to Augmented Reality.
- Date: 10/12/2018
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- Featured In: IEEE International Conference on Artificial Intelligence and Virtual Reality (AIVR)
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- Publication Type: Poster
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- Author(s): Leandro Cruz, Bruno Patrão, Nuno Gonçalves
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Uniquemark: A computer vision system for hallmarks authentication
Uniquemark is a vision system for authentication based on random marks, particularly hallmarks. Hallmarks are worldwide used to authenticate and attest the legal fineness of precious metal artefacts. Our authentication method is based on a multiclass classifier model that uses mark descriptor composed by several geometric features of the particles.
- Date: 26/10/2018
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- Featured In: Recpad 2018-24th Portuguese Conference on Pattern Recognition
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- Publication Type: Conference Papers
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- Author(s): Ricardo Barata, Leandro Cruz, Bruno Patrão, Nuno Gonçalves
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Graphic Code: a New Machine Readable Approach
Graphic Code has two major advantages over classical MRCs: aesthetics and larger coding capacity. It opens new possibilities for several purposes such as identification, tracking (using a specific border), and transferring of content to the application. This paper focuses on presenting how graphic code can be used for industry applications, emphasizing its uses on Augmented Reality (AR).
- Date: 10/12/2018
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- Featured In: IEEE International Conference on Artificial Intelligence and Virtual Reality (AIVR)
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- Publication Type: Conference Papers
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- Author(s): Leandro Cruz, Bruno Patrão, Nuno Gonçalves
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- DOI: 10.1109/AIVR.2018.00036
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