static async Task Main(string[] args)
{
var key = Environment.GetEnvironmentVariable("COMPUTER_VISION_API_KEY");
var client = new ComputerVisionClient(new ApiKeyServiceClientCredentials(key))
{
Endpoint = "https://visiondemosb.cognitiveservices.azure.com/"
};
using var imageStream = File.OpenRead(args.FirstOrDefault() ?? "sample.jpg");
using var cts = new CancellationTokenSource();
_ = Task.Factory.StartNew(async() => {
while (!cts.Token.IsCancellationRequested)
{
Console.Write(".");
await Task.Delay(500);
}
}, cts.Token);
var result = await client.DetectObjectsInStreamAsync(imageStream);
cts.Cancel();
Console.WriteLine();
foreach (var obj in result.Objects)
{
Console.WriteLine($"{obj.ObjectProperty} with confidence {obj.Confidence}");
}
}
/*
* END - DETECT OBJECTS - URL IMAGE
*/
/*
* DETECT OBJECTS - LOCAL IMAGE
* This is an alternative way to detect objects, instead of doing so through AnalyzeImage.
*/
public static async Task DetectObjectsLocal(ComputerVisionClient client, string localImage)
{
Console.WriteLine("----------------------------------------------------------");
Console.WriteLine("DETECT OBJECTS - LOCAL IMAGE");
Console.WriteLine();
using (Stream stream = File.OpenRead(localImage))
{
// Make a call to the Computer Vision service using the local file
DetectResult results = await client.DetectObjectsInStreamAsync(stream);
Console.WriteLine($"Detecting objects in local image {Path.GetFileName(localImage)}...");
Console.WriteLine();
// For each detected object in the picture, print out the bounding object detected, confidence of that detection and bounding box within the image
Console.WriteLine("Detected objects:");
if (results.Objects != null)
{
foreach (var obj in results.Objects)
{
Console.WriteLine($"{obj.ObjectProperty} with confidence {obj.Confidence} at location {obj.Rectangle.X}, " +
$"{obj.Rectangle.X + obj.Rectangle.W}, {obj.Rectangle.Y}, {obj.Rectangle.Y + obj.Rectangle.H}");
}
}
Console.WriteLine();
}
}
/// <summary>
/// Detect Shapes
/// </summary>
/// <param name="imageStream">Image Stream</param>
/// <returns>Results Received from the Computer Vision Service</returns>
public async Task <DetectResult> DetectShapes(Stream imageStream)
{
imageStream.ThrowIfNull(nameof(imageStream));
var result = await _client.DetectObjectsInStreamAsync(imageStream);
return(result);
}
// Analyze a local image
private static async Task DetectObjectsFromStreamAsync(ComputerVisionClient computerVision, string imagePath)
{
if (!File.Exists(imagePath))
{
Console.WriteLine("\nUnable to open or read local image path:\n{0} \n", imagePath);
return;
}
using (Stream imageStream = File.OpenRead(imagePath))
{
DetectResult analysis = await computerVision.DetectObjectsInStreamAsync(imageStream);
Console.WriteLine(imagePath);
DisplayObjects(analysis);
}
}
static async Task Main(string[] args)
{
var key = Environment.GetEnvironmentVariable("COMPUTER_VISION_API_KEY");
var client = new ComputerVisionClient(new ApiKeyServiceClientCredentials(key))
{
Endpoint = "https://visiondemosb.cognitiveservices.azure.com/"
};
using var imageStream = File.OpenRead(args.FirstOrDefault() ?? "sample.jpg");
var result = await client.DetectObjectsInStreamAsync(imageStream);
foreach (var obj in result.Objects)
{
Console.WriteLine($"{obj.ObjectProperty} with confidence {obj.Confidence}");
}
}
/*
* END - DETECT OBJECTS - URL IMAGE
*/
/*
* DETECT OBJECTS - LOCAL IMAGE
* This is an alternative way to detect objects, instead of doing so through AnalyzeImage.
*/
public static async Task <DetectResult> DetectObjectsLocal(ComputerVisionClient client, string localImage)
{
Console.WriteLine("----------------------------------------------------------");
Console.WriteLine("DETECT OBJECTS - LOCAL IMAGE");
Console.WriteLine();
using (Stream stream = File.OpenRead(localImage))
{
Console.WriteLine($"Detecting objects in local image {Path.GetFileName(localImage)}...");
Console.WriteLine();
// Make a call to the Computer Vision service using the local file
DetectResult results = await client.DetectObjectsInStreamAsync(stream);
// For each detected object in the picture, print out the bounding object detected, confidence of that detection and bounding box within the image
Console.WriteLine("Detected objects:");
Console.WriteLine();
return(results);
}
}
private async Task <DetectResult> DetectObjectsAsync(string imageUrl)
{
Stream stream = File.OpenRead(imageUrl);
return(await visionClient.DetectObjectsInStreamAsync(stream));
}
