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Give me your digits!: introduction and background

Introduction

Digital technology can allow us to save labor and time through the automation of menial tasks. Here we are developing a program to transcribe digits using a computer and a camera. Computers are notorious for excelling at repeating similar tasks/ instructions. The following modules will describe how we have implemented a rudimentary system to acquire, process, and identify handwritten digits (0-9).

Background

The conversion of handwriting to the digital regime has been implemented industrially by the USPS; more theoretical work has been compiled by academia most notably by Dr. Yann Lecun. We identified and classified handwritten digits through the utilization of the MNIST (modified national institute of standards and technology) database and classifiers – which include feature extractors and identifiers. We also preprocessed input images through the usage of morphological operators. All of the computation was done using Matlab version 7.1. The process we have developed and many like it have its usages in a world which is developing and converting to the digital regime.

Process overview

The systematic process of identifying handwritten digits follows 3 major parts: image acquisition, image processing, and identification.

Image acquisition

Firstly in the project an image must be acquired. This part of the project could have been simplified with the usage of a scanning device. Instead we opted for the usage of a digital camera to make our system more flexible. Along the way we found that the images produced by a digital camera required more rigorous image processing steps due to varying input qualities of images.

Database

The MNIST database: Its extensiveness is described here. We tested our identification algorithms using the database alone.

Image processing

This part of the process deals with converting raw input images into the standard MNIST database format. Most notably here we deal with cleaning up images and use morphological operators to help us separate digits.

Identification algorithms

This part of the process deals with extracting features from each individual input digit and comparing them with features of images in the MNIST database. Feature extraction was implemented in the field with the 2D FFT. Identification/ classification or the actual matching algorithms goes into the regime of computer science courses and is slightly out of the scope of this course.

Questions & Answers

general equation for photosynthesis
Ojasope Reply
6CO2 + 6H2O + solar energy= C6H1206+ 6O2
Anastasiya
meaning of amino Acids
AJAYI Reply
a diagram of an adult mosquito
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what are white blood cells
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white blood cell is part of the immune system. that help fight the infection.
MG
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Mlungisi
Cells with a similar function, form a tissue. For example the nervous tissue is composed by cells:neurons and glia cells. Muscle tissue, is composed by different cells.
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on what?
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Lish
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homogenous
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Allice Reply
explain if oxygen is necessary for photosynthesis
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Yes, the plant does need oxygen. The plant uses oxygen, water, light, and produced food. The plant use process called photosynthesis.
MG
By using the energy of sunlight, plants convert carbon dioxide and water into carbohydrates and oxygen by photosynthesis. This happens during the day and sunlight is needed.
NOBLE
no. it s a product of the process
Anastasiya
yet still is it needed?
NOBLE
no. The reaction is: 6CO2+6H20+ solar energy =C6H12O6(glucose)+602. The plant requires Carbon dioxyde, light, and water Only, and produces glucose and oxygen( which is a waste).
Anastasiya
what was the question
NOBLE Reply
joining
Godfrey
the specific one
NOBLE
the study of non and living organism is called.
Godfrey
Is call biology
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NOBLE
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Usher
what Is ecology
Musonda Reply
what is a cell
Emmanuel Reply
A cell is a basic structure and functional unit of life
Ndongya
what is biolgy
Hawwi Reply
is the study of living and non living organisms
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MARTIN Reply
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DAVID
anabolism and catabolism
Sani Reply
Anabolism refers to the process in methabolism in which complex molecules are formed "built" and requires energy to happen. Catabolism is the opposite process: complex molecules are deconstructed releasing energy, such as during glicolysis.
Anastasiya
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hi
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hi I'm Anatalia
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Source:  OpenStax, Elec 301 projects fall 2008. OpenStax CNX. Jan 22, 2009 Download for free at http://cnx.org/content/col10633/1.1
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