Dither TIF images via C#
Build your own .NET apps to Dither TIF image files using server-side APIs
How to Dither TIF Files Using C#
Efficiently optimizing images for web placement is crucial for ensuring a smooth user experience. One approach to such optimization involves reducing the image’s color palette, thereby decreasing its file size and improving page load times. However, to prevent the disruption of smooth color gradients and the emergence of sharp boundaries in monochromatic areas, it’s essential to employ the image-smoothing function, known as dithering. This technique allows you to introduce a controlled amount of "noise" to an image or photograph, which, in turn, has a positive effect by smoothing out transitions within the color field and enhancing the image’s overall visual appeal. In order to Dither TIF files, we’ll use Aspose.Imaging for .NET API which is a feature-rich, powerful and easy to use image manipulation and conversion API for C# platform. Open NuGet package manager, search for Aspose.Imaging and install. You may also use the following command from the Package Manager Console.
Package Manager Console Command
PM> Install-Package Aspose.Imaging
Steps to Dither TIF via C#
You need the aspose.imaging.dll to try the following workflow in your own environment.
- load TIF files with Image.Load method;
- dither image;
- save dithered image to disc in the supported by Aspose.Imaging format.
System Requirements
Aspose.Imaging for .NET is supported on all major operating systems. Just make sure that you have the following prerequisites.
- Microsoft Windows or a compatible OS with .NET Framework, .NET Core, Windows Application, ASP.NET Web Application.
- Development environment like Microsoft Visual Studio.
- Aspose.Imaging for .NET referenced in your project.
Dither TIF images - .NET
using Aspose.Imaging; | |
using Aspose.Imaging.FileFormats.Bmp; | |
using Aspose.Imaging.FileFormats.Dicom; | |
using Aspose.Imaging.FileFormats.Emf; | |
using Aspose.Imaging.FileFormats.Jpeg; | |
using Aspose.Imaging.FileFormats.Jpeg2000; | |
using Aspose.Imaging.FileFormats.Png; | |
using Aspose.Imaging.FileFormats.Psd; | |
using Aspose.Imaging.FileFormats.Tiff.Enums; | |
using Aspose.Imaging.ImageFilters.FilterOptions; | |
using Aspose.Imaging.ImageOptions; | |
using Aspose.Imaging.Masking; | |
using Aspose.Imaging.Masking.Options; | |
using Aspose.Imaging.Masking.Result; | |
using Aspose.Imaging.Sources; | |
using System; | |
using System.Collections.Generic; | |
using System.IO; | |
using System.Linq; | |
string templatesFolder = @"c:\Users\USER\Downloads"; | |
ThresholdDithering(); | |
void FloydSteinbergDithering() | |
{ | |
FilterImages(image => | |
{ | |
//https://apireference.aspose.com/imaging/net/aspose.imaging/ditheringmethod | |
image.Dither(DitheringMethod.FloydSteinbergDithering, 4); | |
}, "floydsteinbergdithering"); | |
} | |
void ThresholdDithering() | |
{ | |
FilterImages(image => | |
{ | |
//https://apireference.aspose.com/imaging/net/aspose.imaging/ditheringmethod | |
image.Dither(DitheringMethod.ThresholdDithering, 4); | |
}, "thresholddithering"); | |
} | |
void FilterImages(Action<RasterImage> doFilter, string filterName) | |
{ | |
List<string> rasterFormats = new List<string>() { "jpg", "png", "bmp", "apng", "dicom", | |
"jp2", "j2k", "tga", "webp", "tif", "gif", "ico" }; | |
List<string> vectorFormats = new List<string>() { "svg", "otg", "odg", "eps", "wmf", "emf", "wmz", "emz", "cmx", "cdr" }; | |
List<string> allFormats = new List<string>(rasterFormats); | |
allFormats.AddRange(vectorFormats); | |
allFormats.ForEach( | |
formatExt => | |
{ | |
var inputFile = Path.Combine(templatesFolder, $"template.{formatExt}"); | |
bool isVectorFormat = vectorFormats.IndexOf(formatExt) > -1; | |
//Need to rasterize vector formats before background remove | |
if (isVectorFormat) | |
{ | |
inputFile = RasterizeVectorImage(formatExt, inputFile); | |
} | |
var outputFile = Path.Combine(templatesFolder, $"{filterName}_{formatExt}.png"); | |
Console.WriteLine($"Processing {formatExt}"); | |
using (var image = (RasterImage)Image.Load(inputFile)) | |
{ | |
doFilter(image); | |
//If image is multipage save each page to png to demonstrate results | |
if (image is IMultipageImage multiPage && multiPage.PageCount > 1) | |
{ | |
for (var pageIndex = 0; pageIndex < multiPage.PageCount; pageIndex++) | |
{ | |
string fileName = $"{filterName}_page{pageIndex}_{formatExt}.png"; | |
multiPage.Pages[pageIndex].Save(templatesFolder + fileName, new PngOptions()); | |
File.Delete(templatesFolder + fileName); | |
} | |
} | |
else | |
{ | |
image.Save(outputFile, new PngOptions()); | |
File.Delete(outputFile); | |
} | |
} | |
//Remove rasterized vector image | |
if (isVectorFormat) | |
{ | |
File.Delete(inputFile); | |
} | |
} | |
); | |
} | |
string RasterizeVectorImage(string formatExt, string inputFile) | |
{ | |
string outputFile = Path.Combine(templatesFolder, $"rasterized.{formatExt}.png"); | |
using (var image = Image.Load(inputFile)) | |
{ | |
image.Save(outputFile, new PngOptions()); | |
} | |
return outputFile; | |
} |
About Aspose.Imaging for .NET API
Aspose.Imaging API is an image processing solution to create, modify, draw or convert images (photos) within applications. It offers: cross-platform Image processing, including but not limited to conversions between various image formats (including uniform multi-page or multi-frame image processing), modifications such as drawing, working with graphic primitives, transformations (resize, crop, flip&rotate, binarization, grayscale, adjust), advanced image manipulation features (filtering, dithering, masking, deskewing), and memory optimization strategies. It’s a standalone library and does not depend on any software for image operations. One can easily add high-performance image conversion features with native APIs within projects. These are 100% private on-premise APIs and images are processed at your servers.Dither TIF via Online App
Dither TIF documents by visiting our Live Demos website The live demo has the following benefits
TIF What is TIF File Format
Read MoreOther Supported Dither Formats
Using C#, one can easily Dither different formats including: