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  • Pegasus2000

    by Published on June 4th, 2008 04:30

    The moment has finally arrived.

    Blind Assistant core CFW0002 is online on Visilab website:

    http://visilab.unime.it/~filippo/Bli...dAssistant.htm

    Blind Assistant is an attempt to help blind men, using
    softwares that run not on expensive and complex
    hardware, but on a simple Sony PSP.

    The new core uses Nanodesktop 0.3.4 (the next version
    of ND that will be released very soon).

    The changes are very important.

    a) Blind Assistant has a new algorithm for face recognition.
    It has been hardly optimized for using Sony VFPU coprocessor.
    The speed is very high and recognition rate has been
    improved.

    b) Voice Synthetizer also uses VFPU . This allows to the
    software a generation of vocal samples in real time.

    c) Now, Blind Assistant is able also to recognize in which
    room the blind is. This task is done through a client/server
    architecture, that uses a new component called
    BlindServer.

    BlindServer is a complex program, designed to runs on a X86 PC.

    It is distribuited in 3 versions: one for
    normal MMX CPU, one for SSE CPU and one for SSE2/SSE3 CPU.

    When Blind Assistant needs the execution of a complex
    algorithm, that should require a great cpu power, it sends
    an information packet via wi-fi to the Blind Server.

    If BlindServer runs on a INTEL or AMD CPU in that moment,
    it can execute also heavy computations as SIFT, without
    large delays.

    Blind Server executes the operation, making use of a fast
    Intel or AMD CPU and, when the test has been completed, it
    returns via wi-fi the results to the Blind Assistant client,
    that runs on the PSP.

    In this way, the mobile client (i.e. the PSP), can execute
    operations that would be impossible for a simple MIPS CPU.

    The communication between the client and the server, is
    realized using BAWCP (Blind Assistant wireless communication
    protocol): a wi-fi protocol that manages the exchange of
    commands between the client side and the server side, and
    that manages also the process of compression and decompression
    of the images.

    Through the BlindServer, the homebrew on the PSP can execute
    the SIFT algorithm. SIFT stands for Scalar Invariant Feature
    Transform: it allows the recognition of a particular place
    or room of a home. This can help the blind, because he can
    know in which room he is actually.


    d) Blind Assistant CFW0002 supports also a complex system
    for optical char recognition. The system is able to read
    a text or a label, through the Sony Go-Cam.

    This can be done using a combination of a OCR method and of
    the ndFLite Voice Synthetizer (now very faster, thanks to the
    new routines VFPU-optimized).

    The defined OCR methods are two: the former uses the known
    Tesseract OCR. Tesseract is a technology developed by HP in 1995,
    and in a second time released as open-source. It is
    actually supported by the Google Foundation.

    The second OCR method uses Nanodesktop OCRAD, and it is designed
    to run in a fully mobile situation (i.e. when the client hasn't
    a connection with a BlindServer available).

    The system includes also an algorithm that, using a set of
    dictionaries, is able to correct the errata words that
    have been detected by the OCR.

    In ideal condition, Blind Assistant OCR reaches a recognition
    rate of 90%.


    In the package you can find a PDF called Install Blind Assistant.
    It contains all the needed informations about the program.

    The program is able to autoupdate via internet when new updates
    are released.

    The users that have installed the previous core CFW0001, can
    update the core manually: go to Update menu in the main
    interface, and choose the item "Check, DwLoad and Install
    new updates". The core CFW0001 will be updated itself
    automatically.

    The service of autoupdate will become operative within some hours
    from this moment.


    Thanks for the attention
    Filippo Battaglia ...
    by Published on January 23rd, 2008 19:41

    This is a very important advice.

    Blind Assistant is the attempt to create an homebrew that is able to
    recognize the names of the people that are present in a room. This
    can help blind men and people that are visually impaired.

    Visilab Research Center has released the first official version of the
    program here:

    http://visilab.unime.it/~filippo/Bli...dAssistant.htm

    The source code is released too, and it is under GPL license.

    Blind Assistant uses a complex algorithm of recognition based on
    PentLand/EigenFaces and on SIFT (Scalar Features Inverse Transform)
    to recognize the name of the people that are present in the room.

    In the following versions, I'll add also the ability to recognizes the place
    in which the user is in that moment, and other features.

    Each Blind Assistant installation, is able to auto-update itself using
    Internet connection. So, when Visilab will release a new version of
    BA, your program will detect the update, and it will download it and
    install it, in a fully automatized procedure.

    The system supports either PSP Fat or PSP Slim, with custom firmware
    3.71 M33-4. The Sony GoCam device is fully supported, and Eyeserver
    is only the second choice.

    The engine for vocal synthesis is the ndFLite, based on the Alan
    Cox's work (Carniege Mellon University).

    The graphical interface is based on the tecnologies released with the
    new Nanodesktop 0.3.3.

    I hope that it is useful for the blind. ...
    by Published on January 13th, 2008 08:18

    The new version of Nanodesktop SDK (Software Development Kit) is
    online and downloadable here:

    http://visilab.unime.it/~filippo/Nan.../Downloads.htm

    This new version of the system adds a new HAL (Hardware Abstraction
    Layer) called HAL CFW. It is designed for custom firmwares, either on
    PSP-FAT or on PSP-SLIM. Now, the nd applications can work on
    every PSP. The new HAL has been tested on custom firmware version
    3.71 M33-4 (in PSP-FAT or in PSP-SLIM).

    Here is the new user guide, with hundreds of how-to:

    http://visilab.unime.it/~filippo/Nan.../Docs/Docs.htm

    The new distribution adds the support for ndSQLLite (a library that
    manages database), ndSIFT (an alghoritm that allows the recognition
    of an object), and ndGOCR (a reimplementation of GNU OCR, that can
    work on PSP).

    We have fixed hundreds of bugs.

    The system now supports the Sony GoCam, and not only the Eyeserver
    tecnology. In the guide you can find some example about the use of
    the GoCam with few rows of code.

    Remember that, all applications that are developed on CFW HAL, must
    be accomplished with the "kernel extender": it is a driver called
    ndKrnExtender_v1.Prx and it must be copied in the root folder of
    the memory stick before starting the new nd application.

    You can find the kernel extender in the download page of the Visilab
    website.

    New version of the SDK supports also ndHAL_SystemExec to load another
    homebrew from a homebrew, the pseudoExec function to make easier the
    porting of software and libraries that have been originally developed for
    PC, and a faster version of Nanodesktop graphical system.

    The multimedia features include support for WAV and MP3 decoding via
    Media Engine (hardware accelerated).

    The engine for Text-To-Speech synthesis is ndFLite.

    If you have trouble in Nanodesktop installation, you can find help in
    Nanodesktop official forum:

    http://www.psp-ita.com/forum/index.php

    Enjoy ! ...
    by Published on November 21st, 2007 15:32

    Andrea Badiali has released the first 3rdparty Nanodesktop application.
    This homebrew provides a calculator, a text to speech synthetizer and
    a WAV/MP3 graphical player.

    It is based on the API of Nanodesktop library. This is a simple beta
    program, following versions will be released in a second time.

    More infos here:

    http://www.psp-ita.com/forum/viewtopic.php?t=9670

    Download and Give Feedback Via Comments ...
    by Published on July 13th, 2007 07:31

    Nanodesktop 0.3 with Eyeserver support has been released.

    You can find other information here:
    http://www.psp-ita.com/forum/forum/v...ic.php?t=68074

    Nanodesktop official site: http://visilab.unime.it/~filippo/

    What's new:

    1. Introduced Phoenix Graphical Subsystem: now nd supports multithreading applications;
    2. Added support for TextBoxes, ListBoxes, TextAreas, Control Boxes;
    3. Introduced new API for VirtualKeyboard;
    4. Introduced new type of VirtualKeyboard;
    5. Introduced new API for USB support;
    6. Introduced support for USB attach/detach;
    7. Introduced ndUSBDrv.Prx for USB transfer mode support;
    8. Introduced webcam API and fast video interface;
    9. Scanf and derived functions have been totally rewritten;
    10. Fixed a trouble that caused the missed inhibition of VirtualKeyboard when NanoC brokes data flux from stdin stream;
    11. Added functions difftime, localtime, asctime, mktime, ctime, gmtime, strftime in NanoC;
    12. Added function freopen in stdio.h
    13. Introduce EMI and EMIEMU libraries for VFPU support and VFPU emulation (integrated in NanoM)
    14. Fixed a trouble that caused a system hang when the user tried to open an image with DevIL routines, in KSU mode;
    15. ndHighGUI has a new version of cvShowImage, fully optimized
    16. ndHighGUI now supports OpenCV functions for webcam (cvGrabImage, cvReleaseCapture, and the other functions.....)
    17. cvSumPixel.cpp in OpenCV now can use EMI interface for very faster and hardware assisted computations;
    18. Introduced Eyeserver/Eyeclient;
    19. Introduced BootScreen and ExitManager when the system works in KSU mode;
    20. Introduced new API for manages mouse events
    21. Introduced ndDelay and new functions ndHAL_HardDelay, ndHAL_SoftDelay, ndHAL_ClockDelay;
    22. Introduced ndLP_CreateWindow (ndLP_AllocateWindow and others are deprecated now) ...
    by Published on July 15th, 2006 20:44

    6 demos of Nanodesktop tecnology are
    available (and downloadable) at:

    http://visilab.unime.it/~filippo/Nan...ew%20Demos.htm

    Stay tuned.


    Filippo Battaglia ...
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