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Multiple convolution neural networks approach for online handwriting recognition

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9 Apr 2013CPOL8 min read 76.3K   25.1K   74  
The research focuses on the presentation of word recognition technique for an online handwriting recognition system which uses multiple component neural networks (MCNN) as the exchangeable parts of the classifier.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Drawing;
using ANN.Perceptron.ArchiveSerialization;
using ANN.Perceptron.Layers;
namespace ANN.Perceptron.Network
{
    public class ConvolutionNetwork : IDisposable, IArchiveSerialization
    {
        //const
        const ulong ULONG_MAX = 0xffffffff;
        private CommonLayer[] layers;
        private int layerCount;
        Size inputDesignedPatternSize;
        public List<Char> TagetOutputs { get; set; }
        private bool isUnknownOutput;
        private Char unknownOuput;
        public bool IsUnknownOutput
        {
            get
            {
                return isUnknownOutput;
            }
            set
            {
                if (isUnknownOutput == value)
                    return;
                isUnknownOutput = value;
            }
        }
        public Char UnknownOuput
        {
            get
            {
                return unknownOuput;
            }
            set
            {
                if (unknownOuput == value)
                    return;
                unknownOuput = value;
                isUnknownOutput = true;
            }
        }
        public CommonLayer[] Layers
        {
            get
            {
                return layers;
            }
            set
            {
                if (layers == value)
                    return;
                layers = value;
            }
        }
        public int LayerCount
        {
            get
            {
                return layerCount;
            }
            set
            {
                if (layerCount == value)
                    return;
                layerCount = value;
            }
        }
        public Size InputDesignedPatternSize
        {
            get
            {
                return inputDesignedPatternSize;
            }
            set
            {
                if (inputDesignedPatternSize == value)
                    return;
                inputDesignedPatternSize = value;
            }
        }
        public ConvolutionNetwork()
        {
            layers = null;
            inputDesignedPatternSize = Size.Empty;
            TagetOutputs = null;
            isUnknownOutput = false;
            unknownOuput = new Char();
        }
        ~ConvolutionNetwork()
        {
            // In case the client forgets to call
            // Dispose , destructor will be invoked for
            Dispose(false);
        }
        protected virtual void Dispose(bool disposing)
        {
            if (disposing)
            {
            }
            // Free unmanaged objects
        }
        public void Dispose()
        {
            Dispose(true);
            // Ensure that the destructor is not called
            layers = null;
        }
        public virtual void Serialize(Archive ar)
        {
            if (ar.IsStoring())
            {
                //store taget outputs
                ar.Write(TagetOutputs.Count);
                foreach (var op in TagetOutputs)
                {
                    ar.Write(op);
                }
                //
                ar.Write(layerCount);
                ar.Write(inputDesignedPatternSize.Width);
                ar.Write(inputDesignedPatternSize.Height);
                ar.Write(isUnknownOutput);
                if (isUnknownOutput == true)
                {
                    ar.Write(unknownOuput);
                }
                //read layers' parameters
                foreach (var layer in layers)
                {
                    layer.Serialize(ar);
                }
            }
            else
            {
                //read target outputs
                int outputcount = 0;
                ar.Read(out outputcount);
                TagetOutputs = new List<char>(outputcount);
                for (int ii = 0; ii < outputcount; ii++)
                {
                    Char op = new Char();
                    ar.Read(out op);
                    TagetOutputs.Add(op);
                }
                //
                //read layer count
                int lc = 0;
                ar.Read(out lc);
                layerCount = lc;
                int w, h;
                //read input designed patern size
                ar.Read(out w);
                ar.Read(out h);
                inputDesignedPatternSize.Width = w;
                inputDesignedPatternSize.Height = h;
                //read isunknownoutput
                ar.Read(out isUnknownOutput);
                if (isUnknownOutput)
                {
                    ar.Read(out unknownOuput);
                }
                //
                layers = new CommonLayer[LayerCount];
                CommonLayer prelayer = null;
                for (int ii = 0; ii < layerCount; ii++)
                {
                    var layer = new CommonLayer();
                    layer.Serialize(ar);
                    layer.PrevLayer = prelayer;
                    layers[ii] = layer;
                    prelayer = layer;

                }
            }
        }
      
    }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Vietnam Maritime University
Vietnam Vietnam
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