Azure - 面孔不会返回年龄？

Question

我正在尝试 azure 图像分析 API。我有下面的代码。我认为作为面部分析的一部分，我会得到估计的年龄。我发送给它的所有内容似乎都返回 0 年龄。这是我出错的地方吗？对此有什么想法吗？短暂性脑缺血发作。

ComputerVisionClient client =
  new ComputerVisionClient(new ApiKeyServiceClientCredentials(azureImageKey)) { Endpoint = endPoint };
List<VisualFeatureTypes?> features = new List<VisualFeatureTypes?>()
{
    VisualFeatureTypes.Tags,
    VisualFeatureTypes.ImageType,
    VisualFeatureTypes.Faces,
    VisualFeatureTypes.Adult,
    VisualFeatureTypes.Brands,
    VisualFeatureTypes.Description
};
ImageAnalysis results = await client.AnalyzeImageAsync(img, visualFeatures: features);

Answer 1

我尝试使用以下代码和代码中的流来从 Azure Blob 存储中的图像 URL 获取人的年龄。

代码：

using System;
using System.Collections.Generic;
using System.IO;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.Azure.CognitiveServices.Vision.ComputerVision;
using Microsoft.Azure.CognitiveServices.Vision.ComputerVision.Models;

class Program
{
    static async Task Main(string[] args)
    {
        string azureImageKey = "<ComputerVision_key>";
        string endPoint = "<ComputerVision_endpoint>";

        ComputerVisionClient client = new ComputerVisionClient(new ApiKeyServiceClientCredentials(azureImageKey)) { Endpoint = endPoint };

        string blobImageUrl = "https://<storage_name>.blob.core.windows.net/<container_name>/<image_name>.jpg"; //make sure the blob have the public read access
        Stream imageStream = await DownloadImageFromBlobUrlAsync(blobImageUrl);

        List<VisualFeatureTypes?> features = new List<VisualFeatureTypes?>()
        {
            VisualFeatureTypes.Tags,
            VisualFeatureTypes.ImageType,
            VisualFeatureTypes.Faces,
            VisualFeatureTypes.Adult,
            VisualFeatureTypes.Brands,
            VisualFeatureTypes.Description
        };

        try
        {
            ImageAnalysis results = await client.AnalyzeImageInStreamAsync(imageStream, visualFeatures: features);

            Console.WriteLine("Image Analysis Results:");
            Console.WriteLine("\nTags:");
            foreach (var tag in results.Tags)
            {
                Console.WriteLine($"{tag.Name} ({tag.Confidence * 100}%)");
            }
            Console.WriteLine("\nDetected Faces:");
            foreach (var face in results.Faces)
            {
                Console.WriteLine($"Age: {face.Age}, Gender: {face.Gender}");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred: {ex.Message}");
        }
    }

    private static async Task<Stream> DownloadImageFromBlobUrlAsync(string blobImageUrl)
    {
        using (HttpClient httpClient = new HttpClient())
        {
            HttpResponseMessage response = await httpClient.GetAsync(blobImageUrl);

            if (response.IsSuccessStatusCode)
            {
                Stream imageStream = await response.Content.ReadAsStreamAsync();
                return imageStream;
            }
            else
            {
                throw new Exception($"Failed to download image from the storage blob URL. Status code: {response.StatusCode}");
            }
        }
    }
}

输出：

程序运行成功，提供了 blob URL 中人员的准确年龄和性别，如下所示。