Delphi 语言 深度学习应用实战案例

Delphi 语言深度学习应用实战案例

Delphi 是一种面向对象的编程语言，由 Borland 公司开发，广泛应用于桌面应用程序、企业级应用和移动应用开发。尽管 Delphi 主要用于传统的软件开发，但随着深度学习技术的兴起，它也可以用于构建复杂的机器学习模型。本文将围绕 Delphi 语言在深度学习领域的应用，通过一个实战案例，展示如何使用 Delphi 和深度学习框架实现一个简单的图像分类任务。

案例背景

在这个案例中，我们将使用 Delphi 和 TensorFlow.js 库来实现一个简单的图像分类器。这个分类器将能够识别图像中的猫和狗。我们将使用 TensorFlow.js，因为它是一个可以在浏览器和 Node.js 环境中运行的 JavaScript 库，而 Delphi 可以通过 JavaScript 引擎调用它。

环境准备

1. 安装 Delphi：从 Embarcadero 官网下载并安装 Delphi 开发环境。

2. 安装 Node.js：从 Node.js 官网下载并安装 Node.js。

3. 安装 TensorFlow.js：在 Node.js 环境中，使用 npm 安装 TensorFlow.js。

bash
npm install @tensorflow/tfjs

实战步骤

1. 创建 Delphi 项目

1. 打开 Delphi IDE，创建一个新的 VCL Forms Application 项目。

2. 在项目中添加一个新的单元文件，命名为 `TfjsUnit.pas`。

2. 引入 TensorFlow.js 库

在 `TfjsUnit.pas` 文件中，引入 TensorFlow.js 库。

delphi
uses

  System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,

  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls,

  NodeJS;

type

  TForm1 = class(TForm)

    Image1: TImage;

    Button1: TButton;

    procedure Button1Click(Sender: TObject);

  private

    { Private declarations }

    FModel: TTensorFlowModel;

  public

    { Public declarations }

    procedure LoadModel;

  end;

var

  Form1: TForm1;

3. 加载模型

在 `LoadModel` 方法中，加载预训练的模型。

delphi
procedure TForm1.LoadModel;

var

  JSCode: string;

begin

  JSCode := 'const model = await tf.loadLayersModel("https://storage.googleapis.com/tfjs-models/tfjs/mobilenet_v1_1.0_224/model.json");';

  ExecuteJavaScript(JSCode);

end;

4. 加载图像并分类

在 `Button1Click` 方法中，加载图像并使用模型进行分类。

```delphi

procedure TForm1.Button1Click(Sender: TObject);

var

JSCode: string;

ImageData: string;

begin

ImageData := 'data:image/jpeg;base64,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