Improved Text-Detection Methods for a Camera-based Text Reading System for Blind Persons
ICDAR '05 Proceedings of the Eighth International Conference on Document Analysis and Recognition
Text detection and restoration in natural scene images
Journal of Visual Communication and Image Representation
Text Particles Multi-band Fusion for Robust Text Detection
ICIAR '08 Proceedings of the 5th international conference on Image Analysis and Recognition
Automatic text discovering through stroke-based segmentation and text string combination
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Text Detection in Urban Scenes
Proceedings of the 2009 conference on Artificial Intelligence Research and Development: Proceedings of the 12th International Conference of the Catalan Association for Artificial Intelligence
Text detection in natural scene images with feature combination
SIP '07 Proceedings of the Ninth IASTED International Conference on Signal and Image Processing
Text Detection in Urban Scenes
Proceedings of the 2009 conference on Artificial Intelligence Research and Development: Proceedings of the 12th International Conference of the Catalan Association for Artificial Intelligence
UAHCI'07 Proceedings of the 4th international conference on Universal access in human-computer interaction: ambient interaction
New approach based on texture and geometric features for text detection
ICISP'10 Proceedings of the 4th international conference on Image and signal processing
A method for text localization and recognition in real-world images
ACCV'10 Proceedings of the 10th Asian conference on Computer vision - Volume Part III
Text-Pose estimation in 3d using edge-direction distributions
ICIAR'05 Proceedings of the Second international conference on Image Analysis and Recognition
Stereo camera based wearable reading device
AH '12 Proceedings of the 3rd Augmented Human International Conference
Text detection of two major indian scripts in natural scene images
CBDAR'11 Proceedings of the 4th international conference on Camera-Based Document Analysis and Recognition
Segmentation of Bangla words in scene images
Proceedings of the Eighth Indian Conference on Computer Vision, Graphics and Image Processing
Scene text recognition and tracking to identify athletes in sport videos
Multimedia Tools and Applications
Text extraction from natural scene image: A survey
Neurocomputing
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We propose a system that reads the text encountered in natural scenes with the aim to provide assistance to the visually impaired persons. This paper describes the system design and evaluates several character extraction methods. Automatic text recognition from natural images receives a growing attention because of potential applications in image retrieval, robotics and intelligent transport system. Camera-based document analysis becomes a real possibility with the increasing resolution and availability of digital cameras. However, in the case of a blind person, finding the text region is the first important problem that must be addressed, because it cannot be assumed that the acquired image contains only characters. At first, our system tries to find in the image areas with small characters. Then it zooms into the found areas to retake higher resolution images necessary for character recognition. In the present paper, we propose four character-extraction methods based on connected components. We tested the effectiveness of our methods on the ICDAR 2003 Robust Reading Competition data. The performance of the different methods depends on character size. In the data, bigger characters are more prevalent and the most effective extraction method proves to be the sequence: Sobel edge detection, Otsu binarization, connected component extraction and rule-based connected component filtering.