LINX Database


Data description:

LINX database contains 16 images acquired with smartphone cameras by visually impaired people. Some images are shown in Figure 1. In spite of the reduced number of images, an important number of words is present: about 1200 words with 4000 characters. Image contents are very heterogeneous ranging from text documents to products exposed in a supermarket, very blur text, noisy regions, shadow regions, high saturated regions, small and large texts, clear and dark texts etc. You can download the annotated database with its corresponding ground truth from All our results presented in the IET Image Processing submitted paper are also available:

This database has been developed in the framework of LINX project. Annotation has been carried out in a manual assisted way by the Center for mathematical morphology (CMM) at MINES ParisTech, Fontainebleau, France.

IMG_20130702_103435 IMG_20130702_105612 IMG_20130703_101803
IMG_20130702_111117 IMG_20130702_112908 IMG_20130703_143916
IMG_20130702_150611 IMG_20130702_151026 IMG_20130702_153951
IMG_20130703_153630 IMG_20130716_110812 IMG_20130717_145921
IMG_20130703_100928 IMG_20130716_101156 IMG_20130716_101239
IMG_20130719_103400 IMG_20130719_150205 IMG_20130719_150330


The database and its corresponding ground truth is available:

Conditions of use:

The user of this dataset must in every result he distributes:

  1. Provide the dataset title : "LINX database: MINES ParisTech Scene text localization for visually impaired people"
  2. Insert an explicit reference to the MINES ParisTech© copyright (including when displaying an image of the data set on a digital or on an analog media) followed by the mention that "MINES ParisTech created this special set of LINX data for the purpose of segmentation research activities, but does not endorse the way they are used in this project or the conclusions put forward";
  3. Insert the following citation in any scientific or technical publication whenever this dataset was used to get the results:


LINX dataset is made available under the Creative Commons Attribution Non-Commercial No Derivatives (CC-BY-NC-ND-3.0) Licence. Cette œuvre est mise à disposition selon les termes de la Licence Creative Commons Attribution - Pas d'Utilisation Commerciale - Pas de Modification 3.0 France.

Licence Creative Commons


In order to keep informed about the potential modifications or to give some feedback about LINX dataset, please contact Beatriz MARCOTEGUI or Amira BELHEDI.