SRS - Sign2Speech

Introduction

Purpose of the requirements document

This Software Requirements Specification (SRS) identifies the requirements for project "Sign2Speech". This is an open source projet and we shall present what we did for this project in case to catch interest of new potential contributors. This document is a guideline about the functionalities offered and the problems that the system solve.

Scope of the product

Sign2Speech could be used at reception desks or during video conferences to allow dumb people to speak with people who don't know the French sign language. The program will be able to transcribe gestures into written words, printed on the screen.

Overview of the remainder of the document

In the remainder of the document, the general description of the software will be exposed. The requirements (functional and non-functional) will be specified in another part. The document will end with the product evolution, the appendices and the index.

General Description

Product perspective

The main aim of our project is to help speechless people to communicate with other people. In this case, we develop a software able to recognize and analyze the sign language to retranscribing it in writting.

Product functions

Our product is able to understand a sign from the hand and to analyze and show the corresponding word on a screen.

User characteristics

Mainly, you will need one user that master sign language and another that doesn't know how to understand it. The first one will stand in the front of the camera and will speak with sign langage and the other one will watch the monitor to see the translation.

Specific requirements, covering functional, non-functional and interface requirements

• document external interfaces,
• describe system functionality and performance
• specify logical database requirements,
• design constraints,
• emergent system properties and quality characteristics.

Requirement

Function:

Description:

Inputs:

Source:

Outputs:

Destination:

Action:

• Natural language sentences (with MUST, MAY, SHALL)
• Graphical Notations : UML Sequence w/o collaboration diagrams, Process maps, Task Analysis (HTA, CTT)
• Mathematical Notations
• Tabular notations for several (condition --> action) tuples

Non functional requirements:

Pre-condition:

Post-condition:

Side-effects: