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# Neural Network OCR

, 11 Aug 2005 GPL3
Some ideas about optical character recognition using neural networks.
 AForge.Imaging.dll AForge.Math.dll AForge.NeuralNet.dll NeuroOCR.exe SourceGrid2.dll SourceLibrary.dll AForge Math Math.csproj.user NeuralNet Learning NeuralNet.csproj.user NeuroOCR App.ico NeuroOCR.csproj.user References AForge.Imaging.dll SourceGrid2.dll SourceLibrary.dll ```// AForge Math Library // // Copyright � Andrew Kirillov, 2005 // andrew.kirillov@gmail.com // namespace AForge.Math { using System; /// /// Tools /// public class Tools { // Calculate the power of 2, exp: [0, 30] public static int Pow2(int exp) { return ((exp >= 0) && (exp <= 30)) ? (1 << exp) : 0; } // Check if the integer is a power of 2 public static bool IsPowerOf2(int x) { return (x & (x - 1)) == 0; } // Get base of 2 logarithm public static int Log2(int x) { if (x <= 65536) { if (x <= 256) { if (x <= 16) { if (x <= 4) { if (x <= 2) { if (x <= 1) return 0; return 1; } return 2; } if (x <= 8) return 3; return 4; } if (x <= 64) { if (x <= 32) return 5; return 6; } if (x <= 128) return 7; return 8; } if (x <= 4096) { if (x <= 1024) { if (x <= 512) return 9; return 10; } if (x <= 2048) return 11; return 12; } if (x <= 16384) { if (x <= 8192) return 13; return 14; } if (x <= 32768) return 15; return 16; } if (x <= 16777216) { if (x <= 1048576) { if (x <= 262144) { if (x <= 131072) return 17; return 18; } if (x <= 524288) return 19; return 20; } if (x <= 4194304) { if (x <= 2097152) return 21; return 22; } if (x <= 8388608) return 23; return 24; } if (x <= 268435456) { if (x <= 67108864) { if (x <= 33554432) return 25; return 26; } if (x <= 134217728) return 27; return 28; } if (x <= 1073741824) { if (x <= 536870912) return 29; return 30; } return 31; } } } ```

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