Merge BMP images via Java
Build your own Java apps to merge BMP images using server-side APIs
Aspose.Imaging for Java
Overview
How to Merge BMP Files Using Java
If you want to let your creativity run wild, then this is the time to use an image collage. This function will allow you to merge photos and images even if the source files are of different formats. A great way to draw attention to your portfolio is to use photo wallpapers with repeating images or patterns. In this case, images can be combined both in horizontal and vertical directions. In the event that you need to demonstrate the result of processing a file, you can easily merge two images: before and after applying the photo effect. In order to merge BMP files, we’ll use Aspose.Imaging for Java API which is a feature-rich, powerful and easy to use image manipulation and conversion API for Java platform. You can download its latest version directly from Maven and install it within your Maven-based project by adding the following configurations to the pom.xml.
Repository
<repository>
<id>AsposeJavaAPI</id>
<name>Aspose Java API</name>
<url>https://repository.aspose.com/repo/</url>
</repository>
Dependency
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-imaging</artifactId>
<version>version of aspose-imaging API</version>
<classifier>jdk16</classifier>
</dependency>
Steps to Merge BMP via Java
You need the aspose-imaging-version-jdk16.jar to try the following workflow in your own environment.
- Load BMP files with Image.load method
- Combining the images into new one
- Save the cropped image to disc in the supported by Aspose.Imaging format
System Requirements
Aspose.Imaging for Java is supported on all major operating systems. Just make sure that you have the following prerequisites.
- JDK 1.6 or higher is installed.
Merge BMP images - Java
| import com.aspose.imaging.Color; | |
| import com.aspose.imaging.Graphics; | |
| import com.aspose.imaging.Image; | |
| import com.aspose.imaging.RectangleF; | |
| import com.aspose.imaging.fileformats.png.PngColorType; | |
| import com.aspose.imaging.imageoptions.PngOptions; | |
| import com.aspose.imaging.sources.StreamSource; | |
| import java.io.File; | |
| import java.io.FilenameFilter; | |
| import java.util.ArrayList; | |
| import java.util.List; | |
| enum MergeStyle | |
| { | |
| Horizontal, | |
| Vertical | |
| } | |
| // Test directory should have source images to merge | |
| String TestDirectory = "D:\\Many2One\\"; | |
| MergeStyle mStyle = MergeStyle.Horizontal; // or MergeStyle.Vertical | |
| List<Image> images = new ArrayList<Image>(); | |
| try | |
| { | |
| int totalWidth = 0; | |
| int totalHeight = 0; | |
| int maxWidth = 0; | |
| int maxHeight = 0; | |
| final String fileMask = ".png"; | |
| File[] files = new File(TestDirectory).listFiles(new FilenameFilter() | |
| { | |
| @Override | |
| public boolean accept(File dir, String name) | |
| { | |
| return name.endsWith(fileMask); | |
| } | |
| }); | |
| if (files == null) | |
| { | |
| return; | |
| } | |
| for (File fileName : files) | |
| { | |
| try (Image image = Image.load(fileName.getAbsolutePath())) | |
| { | |
| totalWidth += image.getWidth(); | |
| if (image.getWidth() > maxWidth) | |
| { | |
| maxWidth = image.getWidth(); | |
| } | |
| totalHeight += image.getHeight(); | |
| if (image.getHeight() > maxHeight) | |
| { | |
| maxHeight = image.getHeight(); | |
| } | |
| images.add(image); | |
| } | |
| } | |
| if (images.isEmpty()) | |
| { | |
| return; | |
| } | |
| String mergeStyle; | |
| int targetWidth, targetHeight; | |
| if (mStyle == MergeStyle.Horizontal) | |
| { | |
| targetWidth = totalWidth; | |
| targetHeight = maxHeight; | |
| } | |
| else if (mStyle == MergeStyle.Vertical) | |
| { | |
| targetWidth = maxWidth; | |
| targetHeight = totalHeight; | |
| } | |
| else | |
| { | |
| return; // other merge styles are not supported | |
| } | |
| String outputPath = TestDirectory + "output\\"; | |
| File dir = new File(outputPath); | |
| assert dir.exists() || dir.mkdirs(); | |
| outputPath = outputPath + "merged_" + mStyle.name() + ".png"); | |
| PngOptions pngOptions = new PngOptions(); | |
| pngOptions.setColorType(PngColorType.TruecolorWithAlpha); | |
| pngOptions.setSource(new StreamSource()); | |
| try (Image image = Image.create(pngOptions, targetWidth, targetHeight)) | |
| { | |
| image.setBackgroundColor(Color.getWhite()); | |
| final Graphics graphics = new Graphics(image); | |
| float x = 0, y = 0; | |
| for (Image it : images) | |
| { | |
| graphics.drawImage(it, new RectangleF(x, y, it.getWidth(), it.getHeight())); | |
| if (mStyle == MergeStyle.Horizontal) | |
| { | |
| x += it.getWidth(); | |
| } | |
| if (mStyle == MergeStyle.Vertical) | |
| { | |
| y += it.getHeight(); | |
| } | |
| } | |
| image.save(outputPath); | |
| } | |
| } | |
| finally | |
| { | |
| for (Image image : images) | |
| { | |
| image.close(); | |
| } | |
| images.clear(); | |
| } |
About Aspose.Imaging for Java 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.Merge BMP via Online App
Merge BMP documents by visiting our Live Demos website . The live demo has the following benefits
BMP What is BMP File Format
Files having extension .BMP represent Bitmap Image files that are used to store bitmap digital images. These images are independent of graphics adapter and are also called device independent bitmap (DIB) file format. This independency serves the purpose of opening the file on multiple platforms such as Microsoft Windows and Mac. The BMP file format can store data as two-dimensional digital images in both monochrome as well as color format with various colour depths.
Read MoreOther Supported Merge Formats
Using Java, one can easily merge different formats including: