検索結果で発見されたキーワードやパターンを強調する方法

using Aspose.OCR;
using System.Drawing;

string imgFile = "document.png";
string keyword = "Confidential";
RecognitionSettings settings = new RecognitionSettings();
settings.Language = Language.English;
AsposeOcr ocr = new AsposeOcr();
List<RecognitionResult> results = ocr.Recognize(new OcrInput(InputType.SingleImage) { imgFile }, settings);
foreach (var block in results[0].TextBlocks)
{
    if (block.Text.Contains(keyword))
    {
        // Proceed to highlight this region (block.Rect)
    }
}

using (Bitmap bmp = new Bitmap(imgFile))
using (Graphics g = Graphics.FromImage(bmp))
{
    foreach (var block in results[0].TextBlocks)
    {
        if (block.Text.Contains(keyword))
        {
            var rect = block.Rect; // Rectangle coordinates from OCR
            g.DrawRectangle(new Pen(Color.Red, 3), rect.X, rect.Y, rect.Width, rect.Height);
        }
    }
    bmp.Save($"highlighted_{Path.GetFileName(imgFile)}");
}

using Aspose.OCR;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;

class Program
{
    static void Main(string[] args)
    {
        string imgFile = "document.png";
        string keyword = "Confidential";
        RecognitionSettings settings = new RecognitionSettings();
        settings.Language = Language.English;
        AsposeOcr ocr = new AsposeOcr();
        List<RecognitionResult> results = ocr.Recognize(new OcrInput(InputType.SingleImage) { imgFile }, settings);
        using (Bitmap bmp = new Bitmap(imgFile))
        using (Graphics g = Graphics.FromImage(bmp))
        {
            foreach (var block in results[0].TextBlocks)
            {
                if (block.Text.Contains(keyword))
                {
                    var rect = block.Rect;
                    g.DrawRectangle(new Pen(Color.Red, 3), rect.X, rect.Y, rect.Width, rect.Height);
                }
            }
            bmp.Save($"highlighted_{Path.GetFileName(imgFile)}");
        }
    }
}