True Vision

An assistive aid for visually impaired that will help them in color identification,currency denomination recognition, obstacle detection as well as reading newspapers and books. It is a portable device with processing being done on-chip and then aural output produced.

Prototyping
Image Processing
Wearables
Prototyping
Image Processing


Wearables

Motivation


The motivation behind the project was to address the compromised access of the world to the visually impaired people. We wanted to develop a person centeric system, the functionality of which does not depend specialized infrastructure or public clemency, but rests completely in the hands of the user. The project was done in a team of two under the mentorship of my professor. I was involved in both the hardware and software development of the product.

Design


The main design consideration here was to design the selection module so that the user experience is not compromised. We needed a special mechanism of feedback since the device targets a special group of people. Hence, the device is designed to specifically handle the accidental selection of module by providing an instant audio feedback to the user asking him to confirm his selection within 5 seconds of the first registered request. In this way along with providing a better experience for the user, we even help save unnecessary processing of data. 

Device Overview

Technology



client
client
client

Result


Table 1 : Accuracy for Different colors
Color
Accuracy
Yellow
100 %
Orange
100 %
Gray
78 %
Green
85.4 %
Blue
82.1 %
Table 2 : Accuracy for Different Currency Denominations
Currency (Rs.)
Accuracy
50
85.06 %
100
100 %
500
77.95 %
1000
90 %
Table 3 : Efficiency for the three category of images
Image Source
No. of Images
Percentage Precision
Percentage Recall
Newspaper Image
35
86.9
78.9
Book Image
35
86.4
69.1
Article Image
30
82.8
67.6