需要在 c# 中将 jpg 或 jpeg/png/bmp 转换为 WSQ？

Question

有什么方法可以将 bmp/jpg/png 图像转换为 WSQ 而不会丢失 C# 中的质量？使用 Image 类我们可以转换 bmp/jpg 但指纹输出图像的质量很差。我们能否获得与转换后的图像一样好的质量水平？

Answer 1

请试试这个，它可能会帮助你解决你的问题。这个唯一的主要逻辑请参考它并添加你的项目。

  public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    string fileName = "", fileExt = "", FullPath = "";
    WSQEncoder ws = new WSQEncoder();
    private void btnBrowse_Click(object sender, EventArgs e)
    {
        try
        {
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Filter = "JPEG files (*.jpg)|*.jpg|BMP files (*.bmp)|*.bmp|PNG files (*.png)|*.png";
            dialog.Title = "Select a JPEG/PNG/BMP file";
            dialog.Multiselect = false;
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                FullPath = dialog.FileName;
                string[] ext = dialog.FileName.Split('.');
                pictureBox1.Image = new Bitmap(dialog.FileName);
                fileExt = ext[1].ToString();
                fileName = System.IO.Path.GetFileName(dialog.FileName);
                txtOutputLocation.Text = "D:\\" + fileName.Replace(fileExt, "wsq");
                if (fileExt.ToUpper() == "PNG")
                    cbFileType.SelectedIndex = 2;
                else if (fileExt.ToUpper() == "BMP")
                    cbFileType.SelectedIndex = 1;
                else
                    cbFileType.SelectedIndex = 0;
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

    private void btnClear_Click(object sender, EventArgs e)
    {
        pictureBox1.Image = null;
        txtOutputLocation.Text = string.Empty;
        cbFileType.SelectedIndex = 0;
    }

    private void btnConvert_Click(object sender, EventArgs e)
    {
        try
        {
            if (cbFileType.SelectedIndex < 0)
            {
                MessageBox.Show("Select an Image", "Image Required", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }
            if (txtOutputLocation.Text == "" || FullPath == "")
            {
                MessageBox.Show("Select an Image", "Image Required", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }
            SaveFileDialog saveFileDialog1 = new SaveFileDialog();
            saveFileDialog1.Filter = "WSQ file(*.wsq)|*.wsq";
            saveFileDialog1.Title = "Save a WSQ File";
            saveFileDialog1.ShowDialog();
            if (saveFileDialog1.FileName != "")
            {
                //wsq.IMGtoWSQ(cbFileType.SelectedItem.ToString(), FullPath, txtOutputLocation.Text);
                string msg = ws.IMGtoWSQ(cbFileType.SelectedItem.ToString(), FullPath, saveFileDialog1.FileName.ToString());
                MessageBox.Show("Response Status : " + msg, "Conversion Status", MessageBoxButtons.OK, MessageBoxIcon.Information);
                if (msg == "YES")
                    btnClear_Click(sender, e);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }
}