Christophe Rigaud

Christophe Rigaud
La Rochelle Université · Laboratoire Informatique, Image et Interaction

Ph.D. in Computer Science

About

39
Publications
24,739
Reads
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743
Citations
Introduction
Postdoctoral research fellow in the computer department of La Rochelle University in France, doing research and technology transfer on comic book image analysis.
Additional affiliations
October 2014 - present
La Rochelle Université
Position
  • PostDoc Position
November 2012 - December 2014
Autonomous University of Barcelona
Position
  • PhD Student
Description
  • Detection and recognition of complex object from digitized comic books.
October 2011 - December 2014
La Rochelle Université
Position
  • PhD Student
Description
  • Detection and recognition of complex object from digitized comic books.

Publications

Publications (39)
Chapter
The paper describes the “Multimodal Emotion Recognition on Comics scenes” competition presented at the ICDAR conference 2021. This competition aims to tackle the problem of emotion recognition of comic scenes (panels). Emotions are assigned manually by multiple annotators for each comic scene of a subset of a public large-scale dataset of golden ag...
Chapter
In this paper, we introduce a new pipeline to learn manga character features with visual information and verbal information in manga image content. Combining these set of information is crucial to go further into comic book image understanding. However, learning feature representations from multiple modalities is not straightforward. We propose a m...
Chapter
Comics and manga text recognition are attracting an increasing research and industrial interest. Also, the state of the art text detection and OCR performances is starting to be mature enough to provide automatic text recognition for a variety of comics and manga writing styles. However, comics text layout sometimes prevents usual text line detecti...
Article
Learning with incomplete labels in Neural Networks has been actively investigated these last years. Among different kinds of incomplete labels, we investigate incomplete pixel-level labels which are tackled in many concrete problems. One of the challenges for incomplete pixel-level labels is the missing information at local-level. Most of the curre...
Article
Full-text available
Comic book image analysis methods often propose multiple algorithms or models for multiple tasks like panel and character (body and face) detection, balloon segmentation, text recognition, etc. In this work, we aim to reduce the processing time for comic book image analysis by proposing one model that can learn multiple tasks called Comic MTL inste...
Article
Full-text available
The digital comic book market is growing every year now, mixing digitized and digital-born comics. Digitized comics suffer from a limited automatic content understanding which restricts online content search and reading applications. This study shows how to combine state-of-the-art image analysis methods to encode and index images into an XML-like...
Article
Full-text available
Graph-based representations are the most powerful data structures for extracting, representing and preserving the structural information of underlying data. Subgraph spotting is an interesting research problem, especially for studying and investigating the structural information based content-based image retrieval (CBIR) and query by example (QBE)...
Conference Paper
Full-text available
Comics and manga are one of the most popular and familiar forms of graphic content over the world and play a major role in spreading country’s culture. Nowadays, massive digitization and digital-born materials allow page-per-page mobile reading but we believe that other usages may be released in the near future. In this paper, we focus on speech ba...
Conference Paper
Full-text available
Speech text in comic books is placed and written in a particular manner by the letterers which raises unusual challenges for text recognition. We first detail these challenges and present different approaches to solve them. We compare the performances of generic versus specifically trained OCR systems for typewritten and handwritten text lines from...
Article
Full-text available
Since the beginning of the twenty-first century, the cultural industry has been through a massive and historical mutation induced by the rise of digital technologies. The comic books industry keeps looking for the right solution and has not yet produced anything as convincing as the music or movie have. A lot of energy has been spent to transfer pr...
Article
Full-text available
Document analysis is an active field of research, which can attain a complete understanding of the semantics of a given document. One example of the document understanding process is enabling a computer to identify the key elements of a comic book story and arrange them according to a predefined domain knowledge. In this study, we propose a knowled...
Article
Full-text available
In this thesis, we review, highlight and illustrate the challenges related to comic book image analysis in order to give to the reader a good overview about the last research progress in this field and the current issues. We propose three different approaches for comic book image analysis that are composed by several processing. The first approach...
Conference Paper
Full-text available
Comic books digitization combined with subsequent comic book understanding give rise to a variety of new applications, including content reflowing, mobile reading and multi-modal search. Document understanding in this domain is challenging as comics are semi-structured documents, with semantic information shared between the graphical and textual pa...
Conference Paper
Full-text available
Graphs are popular data structures used to model pair wise relations between elements from a given collection. In image processing, adjacency graphs are often used to represent the relations between segmented regions. The comparison of such graphs has been largely studied but graph matching strategies are essential to find, efficiently, similar pat...
Conference Paper
Full-text available
Les bandes dessinées représentent un patrimoine cultu-rel important dans de nombreux pays et leur numérisation massive offre la possibilité d'effectuer des recherches dans le contenu des images. À ce jour, ce sont principalement les structures des pages et leurs contenus textuels qui ont été étudiés, peu de travaux portent sur le contenu graphique....
Conference Paper
Full-text available
Human detection in computer vision field is an active field of research. Extending this to human-like drawings such as the main characters in comic book stories is not trivial. Comics analysis is a very recent field of research at the intersection of graphics, texts, objects and people recognition. The detection of the main comic characters is an e...
Conference Paper
Full-text available
Comic books constitute an important cultural heritage asset in many countries. Digitization combined with subsequent comic book understanding would enable a variety of new applications, including content-based retrieval and content retargeting. Document understanding in this domain is challenging as comics are semi-structured documents, combining s...
Conference Paper
Full-text available
We present eBDtheque, a database of various comic book images and their ground truth for panels, balloons and text lines plus semantic annotations. The database consists of a hundred pages of various comic book albums, Franco-Belgian, American comics and mangas. Additionally, we present the piece of software used to establish the ground truth and a...
Article
Full-text available
Comic books digitization combined with subsequent comic book understanding create a variety of new applications, including mobile reading and data mining. Document understand- ing in this domain is challenging as comics are semi-structured documents, combining semantically important graphical and textual parts. In this work we detail a novel approa...
Article
Full-text available
Graphs are popular data structures used to model pair wise relations between elements from a given collection. In image processing, adjacency graphs are often used to represent the relations between segmented regions. Such graphs can be compared but graph matching strategies are essential to find similar pat- terns. In this paper, we propose to det...
Conference Paper
Full-text available
Comic books constitute an important cultural heritage asset in many countries. Digitization combined with subsequent document understanding enable direct content-based search as opposed to metadata only search (e.g. album title or author name). Few studies have been done in this direction. In this work we detail a novel approach for the automatic t...
Article
Full-text available
Les bandes dessinées représentent un patrimoine culturel important dans de nombreux pays. La numérisation en masse offre l'opportunité d'effectuer des recherches sur le contenu des albums et pas uniquement sur des métadonnées associées (e.g. nom de l'auteur ou de la collection). Peu de travaux ont été menés à ce jour. Seule l'extraction des cases e...
Conference Paper
Full-text available
Comic books constitute an important heritage in many countries. Nowadays, digitization allows to search directly from content instead of metadata only (e.g. album title or author name). Few studies have been done in this direction. Only frame and speech balloon extraction have been experimented in the case of simple page structure. In fact, the pag...

Projects

Projects (2)
Project
Comic book image analysis, content extraction and description