public void DescribeImageInStreamTest()
{
using (MockContext context = MockContext.Start(this.GetType()))
{
HttpMockServer.Initialize(this.GetType(), "DescribeImageInStreamTest");
using (IComputerVisionClient client = GetComputerVisionClient(HttpMockServer.CreateInstance()))
using (FileStream stream = new FileStream(GetTestImagePath("house.jpg"), FileMode.Open))
{
ImageDescription result = client.DescribeImageInStreamAsync(stream).Result;
Assert.Matches("^\\d{4}-\\d{2}-\\d{2}(-preview)?$", result.ModelVersion);
Assert.Equal(result.Tags, new string[] {
"grass",
"outdoor",
"sky",
"house",
"building",
"green",
"lawn",
"residential",
"grassy"
});
Assert.Equal(1, result.Captions.Count);
Assert.Equal("a house with a flag on the front", result.Captions[0].Text);
Assert.True(result.Captions[0].Confidence > 0.41);
}
}
}
public void DescribeImageInStreamTest()
{
using (MockContext context = MockContext.Start(this.GetType()))
{
HttpMockServer.Initialize(this.GetType(), "DescribeImageInStreamTest");
using (IComputerVisionClient client = GetComputerVisionClient(HttpMockServer.CreateInstance()))
using (FileStream stream = new FileStream(GetTestImagePath("house.jpg"), FileMode.Open))
{
ImageDescription result = client.DescribeImageInStreamAsync(stream).Result;
Assert.Equal(result.Tags, new string[] {
"grass",
"outdoor",
"house",
"building",
"green",
"yard",
"lawn",
"front",
"small",
"field",
"home",
"red",
"sitting",
"grassy",
"brick",
"white",
"large",
"old",
"standing",
"grazing",
"sheep",
"parked",
"garden",
"woman",
"man",
"sign"
});
Assert.Equal(1, result.Captions.Count);
Assert.Equal("a large lawn in front of a house", result.Captions[0].Text);
Assert.True(result.Captions[0].Confidence > 0.96);
}
}
}
public void DescribeImageModelVersionTest()
{
using (MockContext context = MockContext.Start(this.GetType()))
{
HttpMockServer.Initialize(this.GetType(), "DescribeImageModelVersionTest");
using (IComputerVisionClient client = GetComputerVisionClient(HttpMockServer.CreateInstance()))
using (FileStream stream = new FileStream(GetTestImagePath("house.jpg"), FileMode.Open))
{
const string targetModelVersion = "2021-04-01";
ImageDescription result = client.DescribeImageInStreamAsync(
stream,
modelVersion: targetModelVersion).Result;
Assert.Equal(targetModelVersion, result.ModelVersion);
}
}
}
public async Task <string> ProcessImageFileForCaptionAsync(
FileInfo file, ImageInfo newImage)
{
string caption = string.Empty;
ImageDescription description;
try
{
using (FileStream stream = file.OpenRead())
{
description = await computerVisionClient.DescribeImageInStreamAsync(stream);
}
if (description.Captions.Count > 0)
{
caption = description.Captions[0].Text;
}
newImage.Caption = caption;
}
catch (ComputerVisionErrorException cve)
{
Debug.WriteLine("ProcessImageFileForCaptionAsync: " + cve.Message);
}
return(caption);
}
