public static void Run()
{
// ExStart:SupportForJPEGBITS
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_JPEG();
int bpp = 2; // Set 2 bits per sample to see the difference in size and quality
// The origin PNG with 8 bits per sample
string originPngFileName = System.IO.Path.Combine(dataDir, "lena_16g_lin.png");
// The output JPEG-LS with 2 bits per sample.
string outputJpegFileName = "lena24b " + bpp + "-bit Gold.jls";
using (PngImage pngImage = (PngImage)Image.Load(originPngFileName))
{
JpegOptions jpegOptions = new JpegOptions();
jpegOptions.BitsPerChannel = (byte)bpp;
jpegOptions.CompressionType = JpegCompressionMode.JpegLs;
pngImage.Save(outputJpegFileName, jpegOptions);
}
// The output PNG is produced from JPEG-LS to check image visually.
string outputPngFileName = "lena24b " + bpp + "-bit Gold.png";
using (JpegImage jpegImage = (JpegImage)Image.Load(outputJpegFileName))
{
jpegImage.Save(outputPngFileName, new PngOptions());
}
}
public static void Run()
{
//ExStart:ChangeBackgroundColor
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PSD();
// Load a PSD file as an image and cast it into PsdImage
using (PsdImage psdImage = (PsdImage)Image.Load(dataDir + "sample.psd"))
{
// Convert to PngImage based on PsdImage.
using (PngImage pngImage = new PngImage(psdImage))
{
int[] pixels = pngImage.LoadArgb32Pixels(pngImage.Bounds);
// Iterate through the pixel array and Check the pixel information
//that if it is a transparent color pixel and Change the pixel color to white
int transparent = pngImage.TransparentColor.ToArgb();
int replacementColor = Color.Yellow.ToArgb();
for (int i = 0; i < pixels.Length; i++)
{
if (pixels[i] == transparent)
{
pixels[i] = replacementColor;
}
}
// Replace the pixel array into the image.
pngImage.SaveArgb32Pixels(pngImage.Bounds, pixels);
pngImage.Save(dataDir + "ChangeBackground_out.png");
}
}
//ExEnd:ChangeBackgroundColor
}
public static void Run()
{
// ExStart:SpecifyTransparency
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PNG();
// Initialize variables to hold width & height values
int width = 0;
int height = 0;
// Initialize an array of type Color to hold the pixel data
Color[] pixels = null;
// Create an instance of RasterImage and load a BMP image
using (RasterImage raster = (RasterImage)Image.Load(dataDir + "aspose_logo.png"))
{
// Store the width & height in variables for later use
width = raster.Width;
height = raster.Height;
// Load the pixels of RasterImage into the array of type Color
pixels = raster.LoadPixels(new Rectangle(0, 0, width, height));
}
// Create & initialize an instance of PngImage while specifying size and PngColorType
using (PngImage png = new PngImage(width, height, PngColorType.TruecolorWithAlpha))
{
// Save the previously loaded pixels on to the new PngImage and Set TransparentColor property to specify which color to be rendered as transparent
png.SavePixels(new Rectangle(0, 0, width, height), pixels);
png.TransparentColor = Color.Black;
png.HasTransparentColor = true;
png.Save(dataDir + "SpecifyTransparencyforPNGImages_out.jpg");
}
// ExEnd:SpecifyTransparency
}
public static void Run()
{
// ExStart:SpecifyTransparency
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PNG();
// Initialize variables to hold width & height values
int width = 0;
int height = 0;
// Initialize an array of type Color to hold the pixel data
Color[] pixels = null;
// Create an instance of RasterImage and load a BMP image
using (RasterImage raster = (RasterImage)Image.Load(dataDir + "aspose_logo.png"))
{
// Store the width & height in variables for later use
width = raster.Width;
height = raster.Height;
// Load the pixels of RasterImage into the array of type Color
pixels = raster.LoadPixels(new Rectangle(0, 0, width, height));
}
// Create & initialize an instance of PngImage while specifying size and PngColorType
using (PngImage png = new PngImage(width, height, PngColorType.TruecolorWithAlpha))
{
// Save the previously loaded pixels on to the new PngImage and Set TransparentColor property to specify which color to be rendered as transparent
png.SavePixels(new Rectangle(0, 0, width, height), pixels);
png.TransparentColor = Color.Black;
png.HasTransparentColor = true;
png.Save(dataDir + "SpecifyTransparencyforPNGImages_out.jpg");
}
// ExEnd:SpecifyTransparency
}
public static void Run()
{
//ExStart:PNGtoPDF
string dataDir = RunExamples.GetDataDir_ModifyingAndConvertingImages();
using (PngImage image = (PngImage)Image.Load(dataDir + "test.png"))
{
Aspose.Imaging.ImageOptions.PdfOptions exportOptions = new Aspose.Imaging.ImageOptions.PdfOptions();
exportOptions.PdfDocumentInfo = new Aspose.Imaging.FileFormats.Pdf.PdfDocumentInfo();
image.Save(dataDir + "test.pdf", exportOptions);
}
//ExEnd:PNGtoPDF
}
public static void Run()
{
//ExStart:ChangeWindowSize
string dataDir = RunExamples.GetDataDir_PNG();
string sourceFile = @"test.png";
string outputFile = "result.png";
using (PngImage image = (PngImage)Image.Load(dataDir + sourceFile))
{
image.BinarizeBradley(10, 20);
image.Save(dataDir + outputFile);
}
//ExEnd:ChangeWindowSize
}
public static void Run()
{
Console.WriteLine("Running example PNGtoPDF");
string dataDir = RunExamples.GetDataDir_ModifyingAndConvertingImages();
using (PngImage image = (PngImage)Image.Load(dataDir + "sample.png"))
{
Aspose.Imaging.ImageOptions.PdfOptions exportOptions = new Aspose.Imaging.ImageOptions.PdfOptions();
exportOptions.PdfDocumentInfo = new Aspose.Imaging.FileFormats.Pdf.PdfDocumentInfo();
image.Save(dataDir + "test.pdf", exportOptions);
}
Console.WriteLine("Finished example PNGtoPDF");
}
public static void Run()
{
// ExStart:ApplyFilterMethod
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PNG();
using (PngImage png = (PngImage)Image.Load(dataDir + "aspose_logo.png"))
{
// Create an instance of PngOptions, Set the PNG filter method and Save changes to the disc
PngOptions options = new PngOptions();
options.FilterType = PngFilterType.Paeth;
png.Save(dataDir + "ApplyFilterMethod_out.jpg", options);
}
// ExEnd:ApplyFilterMethod
}
public static void Run()
{
// ExStart:SpecifyBitDepth
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PNG();
// Load an existing PNG image
using (PngImage png = (PngImage)Image.Load(dataDir + "aspose_logo.png"))
{
// Create an instance of PngOptions, Set the desired ColorType, BitDepth according to the specified ColorType and save image
PngOptions options = new PngOptions();
options.ColorType = PngColorType.Grayscale;
options.BitDepth = 1;
png.Save(dataDir + "SpecifyBitDepth_out.jpg", options);
}
// ExEnd:SpecifyBitDepth
}
public static void Run()
{
//ExStart:SpecifyTransparency
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PSD();
// Load a PSD file as an image and cast it into PsdImage
using (PsdImage psdImage = (PsdImage)Image.Load(dataDir + "sample.psd"))
{
// Initialize PNG image with psd image pixel data.
using (PngImage pngImage = new PngImage(psdImage))
{
// specify the PNG image transparency options and save to file.
pngImage.TransparentColor = Color.White;
pngImage.HasTransparentColor = true;
pngImage.Save(dataDir + "Specify_Transparency_result.png");
}
}
//ExEnd:SpecifyTransparency
}
public static void Run()
{
Console.WriteLine("Running example SettingResolution");
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PNG();
// Initialize variables to hold width & height values
int width = 0;
int height = 0;
// Initialize an array of type Color to hold the pixel data
Color[] pixels = null;
// Create an instance of RasterImage and load a BMP image
using (RasterImage raster = (RasterImage)Image.Load(dataDir + "aspose_logo.png"))
{
// Store the width & height in variables for later use
width = raster.Width;
height = raster.Height;
// Load the pixels of RasterImage into the array of type Color
pixels = raster.LoadPixels(new Rectangle(0, 0, width, height));
}
// Create & initialize an instance of PngImage while specifying size and PngColorType
using (PngImage png = new PngImage(width, height))
{
// Save the previously loaded pixels on to the new PngImage
png.SavePixels(new Rectangle(0, 0, width, height), pixels);
// Create an instance of PngOptions, Set the horizontal & vertical resolutions and Save the result on disc
PngOptions options = new PngOptions();
options.ResolutionSettings = new ResolutionSetting(72, 96);
png.Save(dataDir + "SettingResolution_output.png", options);
}
Console.WriteLine("Finished example SettingResolution");
}
public static void Run()
{
// ExStart:SettingResolution
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_PNG();
// Initialize variables to hold width & height values
int width = 0;
int height = 0;
// Initialize an array of type Color to hold the pixel data
Color[] pixels = null;
// Create an instance of RasterImage and load a BMP image
using (RasterImage raster = (RasterImage)Image.Load(dataDir + "aspose_logo.png"))
{
// Store the width & height in variables for later use
width = raster.Width;
height = raster.Height;
// Load the pixels of RasterImage into the array of type Color
pixels = raster.LoadPixels(new Rectangle(0, 0, width, height));
}
// Create & initialize an instance of PngImage while specifying size and PngColorType
using (PngImage png = new PngImage(width, height))
{
// Save the previously loaded pixels on to the new PngImage
png.SavePixels(new Rectangle(0, 0, width, height), pixels);
// Create an instance of PngOptions, Set the horizontal & vertical resolutions and Save the result on disc
PngOptions options = new PngOptions();
options.ResolutionSettings = new ResolutionSetting(72, 96);
png.Save(dataDir + "SettingResolution_output.png", options);
}
// ExEnd:SettingResolution
}
