Aspose.Imaging 22.2.0

.NET API with Optimized Image Resize Speed

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It is a standalone Imaging API consists of C# routines that enable your .NET applications to draw as well as perform basic to advanced level processing of raster & vector images.

Aspose.Imaging for .NET offers robust image compression and high processing speed through native byte access and a range of efficient algorithms. It not only manipulate, export, and convert images but also lets you dynamically draw objects using pixel manipulation and Graphics Path.

Imaging API Features

• Draw raster images with graphics.
• Draw vector images.
• Converting images to various formats.
• Apply masking as well as Median & Wiener filters.
• Crop, rotate & resize images via API.
• De-skew & transform images.
• Set image properties.

What's new in v22.2.0

Optimized Image Resize Speed

Improved the image resize speed and made it faster.

resize(ResizeType.AdaptiveResample, 3);
resize(ResizeType.AdaptiveResample, 2);
resize(ResizeType.AdaptiveResample, 0.25d);
resize(ResizeType.LanczosResample, 4);
resize(ResizeType.LanczosResample, 0.25d);

private void resize(ResizeType resizeType, double scale)
{
    string baseFolder = @"D:\";
    string fileName = "tiger.bmp";
    string inputFileName = Path.Combine(baseFolder, fileName);

    long value = 0;
    int count = scale < 1 ? 50 : 5;
    for (int i = 0; i < count; i++)
    {
        using (Image image = Image.Load(inputFileName))
        {
            var s = new Stopwatch();
            s.Start();
            image.Resize((int) Math.Round(image.Width * scale), 
             (int) Math.Round(image.Height * scale), resizeType);
            s.Stop();
            value += s.ElapsedMilliseconds;
        }
    }

    Console.WriteLine("{0}(scale - {1}:{3} times): 
         {2:0.00}ms", resizeType, scale, value, count);
}

Accurate Text Alignment

Added the support to perform the pixel perfect text alignment.

string baseFolder = @"D:\test";
string[] alignments = new[] {"Left", "Center", "Right"};
FontSettings.Reset();
FontSettings.SetFontsFolder(Path.Combine(baseFolder, "fonts"));
FontSettings.UpdateFonts();
foreach (var alignment in alignments)
{
    DrawString(baseFolder, alignment);   
}



private void DrawString(string baseFolder, string align)
{
    
    string fileName = "output_" + align + ".png";
    string outputFileName = Path.Combine(baseFolder, fileName);
    string[] fontNames = new[]
    {
        "Arial", "Times New Roman", 
        "Bookman Old Style", "Calibri", "Comic Sans MS", 
        "Courier New", "Microsoft Sans Serif", "Tahoma",
        "Verdana", "Proxima Nova Rg"
    };

    float[] fontSizes = new[] { 10f, 22f, 50f, 100f };
    int width = 3000;
    int height = 3500;

    using (System.IO.FileStream stream = 
      new System.IO.FileStream(outputFileName, System.IO.FileMode.Create))
    {
        //Create an instance of PngOptions and set its various properties
        Aspose.Imaging.ImageOptions.PngOptions pngOptions 
            = new Aspose.Imaging.ImageOptions.PngOptions();

        //Set the Source for PngOptions
        pngOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream);

        //Create an instance of Image 
        using (Aspose.Imaging.Image image 
           = Aspose.Imaging.Image.Create(pngOptions, width, height))
        {
            //Create and initialize an instance of Graphics class
            Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(image);

            //Clear Graphics surface
            graphics.Clear(Aspose.Imaging.Color.White);

            //Create a SolidBrush object and set its various properties
            Aspose.Imaging.Brushes.SolidBrush brush 
               = new Aspose.Imaging.Brushes.SolidBrush();
            brush.Color = Color.Black;
            float x = 10;
            int lineX = 0;
            float y = 10;
            float w = width - 20;
            var pen = new Pen(Color.Red, 1);

            StringAlignment alignment = StringAlignment.Near;
            switch (align)
            {
                case "Left":
                    alignment = StringAlignment.Near;
                    lineX = (int)Math.Round(x, 0);
                    break;

                case "Center":
                    alignment = StringAlignment.Center;
                    lineX = (int)Math.Round(x + w / 2f, 0);
                    break;

                case "Right":
                    alignment = StringAlignment.Far;
                    lineX = (int)(x + w);
                    break;
            }

            var stringFormat = new StringFormat(StringFormatFlags.ExactAlignment);
            stringFormat.Alignment = alignment;
            foreach (var fontName in fontNames)
            {
                foreach (var fontSize in fontSizes)
                {
                    var font = new Font(fontName, fontSize);
                    string text = String.Format("This is font: {0}, size:{1}", fontName, fontSize);
                    var s = graphics.MeasureString(text, font, SizeF.Empty, null);
                    graphics.
                     DrawString(text, font, brush, new RectangleF(x, y, w, s.Height), stringFormat);

                    y += s.Height;
                }

                graphics.DrawLine(pen, new Point((int)(x), (int)y), new Point((int)(x+w), (int)y));
            }


            graphics.DrawLine(pen, new Point(lineX, 0), new Point(lineX, (int)y));

            // save all changes.
            image.Save();
        }
    }
}

Improved YCbCr to RGb Subsampling

This release has improved YCbCr to RGb subsampling test coverage for the Jpeg2000.

string[] files = new string[]
{
        "resultyuv420_watermark.jp2", "resultyuv422_watermark.jp2",
        "resultyuv444_watermark.jp2"
};

string output = string.Empty;

foreach (string file in files)
{
       string path = file;
       output = file + ".png";

       using (RasterImage image = (RasterImage)Image.Load(path))
       {
             image.Save(
                  output,
                  new PngOptions() 
        { ColorType = Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha });
       }
}

For a complete list of features, enhancements, and bug fixes in this release please visit, Aspose.Imaging for .NET 22.2.

Read & Write Image Formats

Raster Formats: JPEG2000, JPEG, BMP, TIFF, GIF, PNG, APNG
Medical Imaging: DICOM
Metafiles: EMF, WMF, EMZ, WMZ
Truevision: TGA
Vector Graphics: SVG, SVGZ

Save Images As

Fixed: PDF
Photoshop: PSD
Web: HTML5 Canvas

Read Image Formats

eBook: DjVu
Digital Camera Raw: DNG
OpenOffice: ODG, OTG
Bitmap: DIB
Web Image: WebP
CorelDRAW: CDR (X6, X7), CMX (V2.0 32-bit)
PostScript: EPS

Platform Independence

Aspose.Imaging for .NET can be used to develop applications on Windows Desktop (x86, x64), Windows Server (x86, x64), Windows Azure, Windows Embedded (CE 6.0 R2), as well as Linux x64. The supported platforms include .NET Framework version 2.0 or higher, and .NET Compact Framework 3.5.

Getting Started with Aspose.Imaging for .NET

Are you ready to give Aspose.Imaging for .NET a try? Simply execute Install-Package Aspose.Imaging from Package Manager Console in Visual Studio to fetch the NuGet package. If you already have Aspose.Imaging for .NET and want to upgrade the version, please execute Update-Package Aspose.Imaging to get the latest version.

Resize a JPG Image via C# Code

Execute the below code snippet to see how Aspose.Imaging performs in your environment or please visit the GitHub Repository for other common usage scenarios.

using (Image image = Image.Load(dir + "template.jpg"))
{
    image.Resize(300, 300);
    image.Save(dir + "output.jpg");
}

Recover a Broken TIFF using C# Code

You can programmatically recover a damaged TIFF file with the help of Aspose.Imaging for .NET API as demonstrated below.

// create an instance of LoadOptions and set LoadOptions properties
var loadOptions = new LoadOptions();
loadOptions.DataRecoveryMode = DataRecoveryMode.ConsistentRecover;
loadOptions.DataBackgroundColor = Color.Red;

// create an instance of Image and load a damaged image by passing the instance of LoadOptions
using (var image = Image.Load(dir + "template.tiff", loadOptions))
{
    // do processing
}

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