If you reach an error "Undefined function 'testSift' then you need to find all occurances of this method and uncomment the mlpfwd method instead:

[mPrediction,~]=testSift(trainingSet,predictImage); // replace this ...
mPrediction = mlpfwd(mNet,mFrame); // ... with this

You'll then need to get mlpfwd from here

This is the result of an incomplete refactor.

=========================================================================== 24-787 Project: American Sign Language (ASL) Recognition System

The purpose of this document is to provide useful instructions and details pertaining to the MATLAB code developed for this project.

%%%%% ACQUIRING TRAINING DATA %%%%% To get training data for the neural network, follow these steps:

% Load the GUI
>>aslgui

% Set the directory in which to store the training samples
% (default is '/training data' subfolder of current directory)

% Set the desired filename prefix. For now, I propose to
% use the initials of the subject. Currently, the filename convention
% is fixed to PRE###.mat where PRE is the prefix and ### increments for
% each sample.

% Turn the camera on by pressing the START CAMERA button.
% The camera should begin streaming in the VIDEO STREAM panel.

% Make sure that the desired class (letter sign) is selected in the 
% PALETTE panel. The letter should appear below along with a
% corresponding value (1-26 for A-Z).

% When you are ready, press the CAPTURE FRAME button to save a single
% frame of data. The frame is saved as a variable DATA in the selected
% directory with the selected filename. DATA is a 307201x1 vector,
% where the first 

To view a complete listing of video input functions and properties, use >>imaqhelp videoinput

 Example:
    % Construct a video input object
    obj = videoinput('winvideo');

    % Select the source to use for acquisition. 
    set(obj, 'SelectedSourceName', 'input1')

    % View the properties for the selected video source object.
    src_obj = getselectedsource(obj);
    get(src_obj)

    % Preview a stream of image frames.
    preview(obj);

    % Acquire and display a single image frame.
    frame = getsnapshot(obj);
    image(frame);

    % Remove video input object from memory.
    delete(obj);

videoaq.m: acquire video via webcam and display in a GUI

Notes:

File list:

1. aslgui.m: The main file containing a GUI for acquiring training data.
2. signPalette.m: The file that contains the list of available signs (nested in aslgui.m).