Abhilash KumarMano C.Mohit KumarPrashant Prazapati

Indian Currency Note Denomination Detection

Methodology for the Blind

Introduction• Kapil Kumar, a visually impaired PhD scholar, says, "I have to take help from friends and

relatives to know the value. I keep Rs 10 notes in my trouser pockets and the higher value notes like Rs 100 or Rs 500 in my shirt's upper pocket to distinguish between them."

• The country's visually challenged, in addition to several other challenges, face difficulties in distinguishing currency notes. This is because they have to depend on sighted strangers they come across for assistance. They often get cheated by shopkeepers in everyday transactions even before they know it.

• In contrast to the West, which is characterized by technological advancement and a greater degree of awareness, our nation hasn't leveraged the resources at its disposal to come up with an effective, cheap and user-friendly solution for the problem.

• The visually challenged have, for long, relied on naive and crude methods to differentiate currency denominations. For the most part, this comes only with experience, and so may not always be reliable.

Existing Technologies

Pocket Money Brailler

Pros: Small, plastic pocket money brailler lets you easily identify paper money independently

Cons: External assistance needed and cannot be used independently by the blind

Bank Note Reader

Pros: Designed to assist visually impaired, blind, and deaf-blind people identify Canadian bank notes

Cons: Battery-powered; bent and wrinkled money. Depends on note orientation, expensive, not easily available

Special applications for mobile phones with a camera

Pros: Readily available

Cons: Battery-powered, depends on note texture, expensive, requires use of smartphone

Rupees twenty : Size 147 x 63 mm

Indian Currency Notes

177 mm

65 mm 10 mm 10 mm 10 mm 5 mm

Length of pencil = length of Rs. 1000

note = 177 mm

177 mm

Complete overlap => Rs. 1000 note

167 mm

1 dot sensed => Rs. 500 note

157 mm

2 dot sensed => Rs. 100 note

147 mm

73

mm

Sensed 3 dots => 50 or 20 note.Go to test 2

Test 2 : vertical testDot overlapped

=>50 note

Sensed 3 dots => 50 or 20 note.Go to test 2

Test 2 : vertical testDot sensed =>20

note

147 mm

63

mm

137 mm

4 dot sensed => Rs. 10 note

Methodology

Vertical TestDot sensed => Rs. 20Dot not sensed => Rs. 50

Dot(s) Note Identified

0 Rs. 1000

1 Rs. 500

2 Rs. 100

3 Rs. 50 or Rs. 20

4 Rs. 10

Do

ts in

crea

se

Val

ue

de

crea

ses

Advantages of this method

• It can be locally fabricated

• Very, very cheap (~ Rs. 2)

• Readily available everywhere

• It can identify all currency denominations

• Very handy and easy to carry

• Doesn’t need much getting used to

• Safe to use

Looking Into the Future

Braille Printed notes

Pros: User-friendly, external assistance not required

Cons: Note might disintegrate with time

Thank you!