【转载】C# RAM Stable Diffusion 提示词反推 Onnx Demo

原项目地址:

github地址：https://github.com/xinyu1205/recognize-anything

Open-source and strong foundation image recognition models.

效果

模型信息

Model Properties
-------------------------
---------------------------------------------------------------

Inputs
-------------------------
name：input
tensor：Float[1, 3, 384, 384]
---------------------------------------------------------------

Outputs
-------------------------
name：output
tensor：Float[1, 4585]
---------------------------------------------------------------

项目代码

using Microsoft.ML.OnnxRuntime;
using Microsoft.ML.OnnxRuntime.Tensors;
using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
 
namespace Onnx_Demo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";
        string image_path = "";
        DateTime dt1 = DateTime.Now;
        DateTime dt2 = DateTime.Now;
        string model_path;
        Mat image;
 
        SessionOptions options;
        InferenceSession onnx_session;
        Tensor<float> input_tensor;
        List<NamedOnnxValue> input_container;
        IDisposableReadOnlyCollection<DisposableNamedOnnxValue> result_infer;
        DisposableNamedOnnxValue[] results_onnxvalue;
 
        Tensor<float> result_tensors;
 
        StringBuilder sbTags = new StringBuilder();
        StringBuilder sbTagsCN = new StringBuilder();
        StringBuilder sb = new StringBuilder();
 
        public string[] class_names;
 
        List<Tag> ltTag = new List<Tag>();
 
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;
            pictureBox1.Image = null;
            image_path = ofd.FileName;
            pictureBox1.Image = new Bitmap(image_path);
            textBox1.Text = "";
            image = new Mat(image_path);
        }
 
        float[] mean = { 0.485f, 0.456f, 0.406f };
        float[] std = { 0.229f, 0.224f, 0.225f };
 
        public void Normalize(Mat src)
        {
            src.ConvertTo(src, MatType.CV_32FC3, 1.0 / 255);
            Mat[] bgr = src.Split();
            for (int i = 0; i < bgr.Length; ++i)
            {
                bgr[i].ConvertTo(bgr[i], MatType.CV_32FC1, 1 / std[i], (0.0 - mean[i]) / std[i]);
            }
            Cv2.Merge(bgr, src);
            foreach (Mat channel in bgr)
            {
                channel.Dispose();
            }
        }
 
        public float[] ExtractMat(Mat src)
        {
            OpenCvSharp.Size size = src.Size();
            int channels = src.Channels();
            float[] result = new float[size.Width * size.Height * channels];
            GCHandle resultHandle = default;
            try
            {
                resultHandle = GCHandle.Alloc(result, GCHandleType.Pinned);
                IntPtr resultPtr = resultHandle.AddrOfPinnedObject();
                for (int i = 0; i < channels; ++i)
                {
                    Mat cmat = new Mat(
                       src.Height, src.Width,
                       MatType.CV_32FC1,
                       resultPtr + i * size.Width * size.Height * sizeof(float));
 
                    Cv2.ExtractChannel(src, cmat, i);
                    cmat.Dispose();
                }
            }
            finally
            {
                resultHandle.Free();
            }
            return result;
        }
 
        private void button2_Click(object sender, EventArgs e)
        {
            if (image_path == "")
            {
                return;
            }
 
            button2.Enabled = false;
            textBox1.Text = "";
            sb.Clear();
            sbTagsCN.Clear();
            sbTags.Clear();
            Application.DoEvents();
 
            image = new Mat(image_path);
 
            //图片缩放
            Mat resize_image = new Mat();
            Cv2.Resize(image, resize_image, new OpenCvSharp.Size(384, 384));
 
            Normalize(resize_image);
 
            var data = ExtractMat(resize_image);
 
            resize_image.Dispose();
            image.Dispose();
 
            // 输入Tensor
            input_tensor = new DenseTensor<float>(data, new[] { 1, 3, 384, 384 });
 
            //将 input_tensor 放入一个输入参数的容器，并指定名称
            input_container.Add(NamedOnnxValue.CreateFromTensor("input", input_tensor));
 
            dt1 = DateTime.Now;
            //运行 Inference 并获取结果
            result_infer = onnx_session.Run(input_container);
            dt2 = DateTime.Now;
 
            // 将输出结果转为DisposableNamedOnnxValue数组
            results_onnxvalue = result_infer.ToArray();
 
            // 读取第一个节点输出并转为Tensor数据
            result_tensors = results_onnxvalue[0].AsTensor<float>();
 
            var result_array = result_tensors.ToArray();
 
            double[] scores = new double[result_array.Length];
            for (int i = 0; i < result_array.Length; i++)
            {
                double score = 1 / (1 + Math.Exp(result_array[i] * -1));
                scores[i] = score;
            }
            List<Tag> tags = new List<Tag>(ltTag);
 
            List<Tag> topTags = new List<Tag>();
            for (int i = 0; i < scores.Length; i++)
            {
                if (scores[i] > tags[i].Threshold)
                {
                    tags[i].Score = scores[i];
                    topTags.Add(tags[i]);
                }
            }
            topTags.OrderByDescending(x => x.Score).ToList();
 
            foreach (var item in topTags)
            {
                sbTagsCN.Append(item.NameCN + ",");
                sbTags.Append(item.Name + ",");
            }
            sbTagsCN.Length--;
            sbTags.Length--;
 
            sb.AppendLine("Tags:" + sbTags.ToString());
            sb.AppendLine("标签:" + sbTagsCN.ToString());
            sb.AppendLine("------------------");
            sb.AppendLine("推理耗时:" + (dt2 - dt1).TotalMilliseconds + "ms");
            textBox1.Text = sb.ToString();
            button2.Enabled = true;
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            model_path = "model/ram.onnx";
 
            // 创建输出会话，用于输出模型读取信息
            options = new SessionOptions();
            options.LogSeverityLevel = OrtLoggingLevel.ORT_LOGGING_LEVEL_INFO;
            options.AppendExecutionProvider_CPU(0);// 设置为CPU上运行
            // 创建推理模型类，读取本地模型文件
            onnx_session = new InferenceSession(model_path, options);//model_path 为onnx模型文件的路径
 
            // 创建输入容器
            input_container = new List<NamedOnnxValue>();
 
            image_path = "test_img/1.jpg";
            pictureBox1.Image = new Bitmap(image_path);
            image = new Mat(image_path);
 
            string[] thresholdLines = File.ReadAllLines("model/ram_tag_list_threshold.txt");
            string[] tagChineseLines = File.ReadAllLines("model/ram_tag_list_chinese.txt");
            string[] tagLines = File.ReadAllLines("model/ram_tag_list.txt");
 
            for (int i = 0; i < tagLines.Length; i++)
            {
                ltTag.Add(new Tag { NameCN = tagChineseLines[i], Name = tagLines[i], Threshold = double.Parse(thresholdLines[i]) });
            }
        }
 
    }
}

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