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Fix runtime exception in ImageClassification. #3249

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Merged
codemzs merged 4 commits into from
Apr 9, 2019
Merged

Fix runtime exception in ImageClassification. #3249

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893333e
Fix runtime exception in ImageClassification.
codemzs Apr 8, 2019
b69216a
Cleanup.
codemzs Apr 8, 2019
5d35b06
revert changes.
codemzs Apr 8, 2019
a3201ea
3P license notice.
codemzs Apr 9, 2019
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41 changes: 39 additions & 2 deletions docs/samples/Microsoft.ML.Samples/Dynamic/TensorFlow/ImageClassification.cs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,9 @@
using System;
using System.IO;
using System.Linq;
using System.Net;
using ICSharpCode.SharpZipLib.GZip;
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using ICSharpCode.SharpZipLib.Tar;
using Microsoft.ML.Data;

namespace Microsoft.ML.Samples.Dynamic
Expand All @@ -13,7 +17,14 @@ public static void Example()
{
// Download the ResNet 101 model from the location below.
// https://storage.googleapis.com/download.tensorflow.org/models/tflite_11_05_08/resnet_v2_101.tgz
var modelLocation = @"resnet_v2_101/resnet_v2_101_299_frozen.pb";

string modelLocation = "resnet_v2_101_299_frozen.pb";
if (!File.Exists(modelLocation))
{
modelLocation = Download(@"https://storage.googleapis.com/download.tensorflow.org/models/tflite_11_05_08/resnet_v2_101.tgz", @"resnet_v2_101_299_frozen.tgz");
Unzip(Path.Join(Directory.GetCurrentDirectory(), modelLocation), Directory.GetCurrentDirectory());
modelLocation = "resnet_v2_101_299_frozen.pb";
}

var mlContext = new MLContext();
var data = GetTensorData();
Expand All @@ -22,7 +33,7 @@ public static void Example()
// Create a ML pipeline.
var pipeline = mlContext.Model.LoadTensorFlowModel(modelLocation).ScoreTensorFlowModel(
new[] { nameof(OutputScores.output) },
new[] { nameof(TensorData.input) });
new[] { nameof(TensorData.input) }, addBatchDimensionInput: true);

// Run the pipeline and get the transformed values.
var estimator = pipeline.Fit(idv);
Expand Down Expand Up @@ -86,5 +97,31 @@ class OutputScores
{
public float[] output { get; set; }
}

private static string Download(string baseGitPath, string dataFile)
{
using (WebClient client = new WebClient())
{
client.DownloadFile(new Uri($"{baseGitPath}"), dataFile);
}

return dataFile;
}

/// <summary>
/// Taken from https://github.com/icsharpcode/SharpZipLib/wiki/GZip-and-Tar-Samples.
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/// </summary>
private static void Unzip(string path, string targetDir)
{
Stream inStream = File.OpenRead(path);
Stream gzipStream = new GZipInputStream(inStream);

TarArchive tarArchive = TarArchive.CreateInputTarArchive(gzipStream);
tarArchive.ExtractContents(targetDir);
tarArchive.Close();

gzipStream.Close();
inStream.Close();
}
}
}
4 changes: 4 additions & 0 deletions src/Microsoft.ML.SamplesUtils/Microsoft.ML.SamplesUtils.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,10 @@
<IncludeInPackage>Microsoft.ML.SampleUtils</IncludeInPackage>
</PropertyGroup>

<ItemGroup>
<PackageReference Include="SharpZipLib.NETStandard" Version="1.0.7" />
</ItemGroup>

<ItemGroup>
<ProjectReference Include="..\Microsoft.ML.Core\Microsoft.ML.Core.csproj" />
<ProjectReference Include="..\Microsoft.ML.Data\Microsoft.ML.Data.csproj" />
Expand Down