Mouse Loupe

MouseLoupe is a novel screen magnifier developed for the Linux operation system.

This accessibility tool for people with low vision has been developed since 2001 to allow people with disabilities the opportunity to access and enjoy the Internet. Also, it is part of the VisionLinux project and the Linux Acessível project, both developed by the IMAGO Research Group and supported by the Fundação Araucária, CNPq and FINEP. The purpose of the project is to contribute substantially to the social inclusion process in Brazil through digital inclusion.

MouseLoupe is a free software, you can redistribute it and/or modificate it under the terms of the GNU General Public License (GPL). The IMAGO Research Group respectifully request acknowledgment for its use.

Magnification= 4.0x with circular shape and 400px of diameter Magnification= 12.0x with circular shape and 600px of diameter

Graphical interface of MouseLoupe program Magnification= 8.0x with circular shape and 600px of diameter

Mouse Nose

Looking for ways to help people with motor disabilities to use the computer, a tool with name is Mousenose was developed. This tool uses the nose to move the mouse cursor into the screeen. Through a camera, the Mousenose located the user nose, for this one might move the mouse cursor into the screen.

Mousenose selecting system panel Example: Moving the cursor to the left

Graphical interface of MouseNose program


BMP Counter

Talking about hearing disabilities, overcome barriers means understand then enviroment without any sound clue, in this way, learning about rhythm becomes a hard work currently unprovided of aid tools.

The acquisition of rhythm perception allow the person with hearing disability better performance in the moment of development of speaks and physical activities, aspects that are not often boarded, but that involve personal and inclusive perspectives.

Still in this context, searching for new alternatives, a technique using visual tips in the transmission of essential knowledge to the understanding and development of rhythm in the environment was developed by Unicamp researchers.

The combination of technological resources to the method provided the development of the BMP Counter tool.

The BMP Counter is a accessibility resource for deaf people, its funcionality is to train the user into the method of rhythm acquisition. This project was recently began by IMAGO group, and is called Program of rhythmic adapted activities.

Click here to go to BMP Counter


With recent advances in Image Processing and Computer Vision, Optical Character Recognition (OCR) have became viable for a increasing variety of applications. The imagocr system comes from a deep study about OCR involved techniques, as well as many recognition algorithms available in literature. Our approach is hibrid, we use two great recognition methods: Structural Analysis and Template Matching. Then the developed system was compared to two other free software OCR systems, and the results are presented in

The imagocr also was integrated to MouseLupa, allowing people with very low vision, and even with no vision, use computer. And then, we assign to MouseLupa, that is a magnification tool, the screen reading funcion.

The idea is as follows:

  • User clicks over a word, which can be on any place of the screen of his computer;

  • The image is past to imagocr, that returns the recognized text;

  • The word is then past to speech synthesizer system Espeak, that converts text to voice and “speaks” the word to user;

  • The recognized word is also put in the system clipboard, and then the user can “paste” the word in any text editor or terminal, or even in a web browser.

That was an innovative idea because, for the first time in free software, text recognition is used to screen reading.


When the user browse the page, he selects the central word of the magnifying glass

After recognition, the word can be pasted in a text editor

The word can also be pasted in a web browser