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Aspose.Imaging Java
CDR

通过 Java 更改 CDR 中的背景

使用服务器端 API 构建您自己的 Java 应用程序以更改 CDR 文件中的背景。

 

Aspose.Imaging Java Aspose.Imaging Java

Overview

如何使用 Java 更改 CDR 文件中的背景

通常，要获得理想的图像需要更改背景。为了获得所需的CDR格式图像效果，前景物体必须与图片的其余部分隔离。如果背景均匀，则可以自动检测物体。如果照片的背景不均匀或物体分离具有挑战性，建议对图像进行预先标记。这涉及识别照片中预期对象所在的矩形区域并指定其类型。这可以手动完成，也可以通过 Cloud API 的对象识别功能自动完成。选择对象并删除原始背景后，可以应用新背景或实现透明度。为了更改 CDR 文件中的背景，我们将使用 Aspose.Imaging for Java API 是一个功能丰富、功能强大 易于使用的 Java 平台图像处理和转换 API。您可以直接从 Maven

并通过将以下配置添加到 pom.xml 将其安装在基于 Maven 的项目中。

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>

通过 Java 在 CDR 中更改背景的步骤

你需要 aspose-imaging-version-jdk16.jar 在您自己的环境中尝试以下工作流程。

  • 使用 Image.load 方法加载 CDR 文件
  • 改变背景；
  • 以 Aspose.Imaging 支持的格式将图像保存到光盘

系统要求

所有主要操作系统都支持 Java 的 Aspose.Imaging。只需确保您具有以下先决条件。

  • 已安装 JDK 1.6 或更高版本。
 

更改 CDR 图像的背景 - Java

import com.aspose.imaging.*;
import com.aspose.imaging.fileformats.png.PngColorType;
import com.aspose.imaging.imageoptions.PngOptions;
import com.aspose.imaging.masking.IMaskingSession;
import com.aspose.imaging.masking.ImageMasking;
import com.aspose.imaging.masking.options.*;
import com.aspose.imaging.masking.result.MaskingResult;
import com.aspose.imaging.sources.FileCreateSource;
import java.io.File;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.function.Consumer;
//Most common example to demonstrate background change/remove tool
removeBackgroundGenericExample();
// Folder that contains images to process
static final String templatesFolder = "c:\\Data\\";
public static void removeBackgroundProcessingWithManualRectangles()
{
List<String> rasterFormats = Arrays.asList("jpg", "png", "bmp", "apng",
"dicom", "jp2", "j2k", "tga", "webp", "tif", "gif");
List<String> vectorFormats = Arrays.asList("svg", "otg", "odg", "eps",
"wmf", "emf", "wmz", "emz", "cmx", "cdr");
List<String> allFormats = new LinkedList<>(rasterFormats);
allFormats.addAll(vectorFormats);
allFormats.forEach(new Consumer<String>()
{
@Override
public void accept(String formatExt)
{
String inputFile = templatesFolder + "couple." + formatExt;
boolean isVectorFormat = vectorFormats.contains(formatExt);
//Need to rasterize vector formats before background remove
if (isVectorFormat)
{
inputFile = rasterizeVectorImage(formatExt, inputFile);
}
String outputFile = templatesFolder + "remove_background_manual_rectangles." + formatExt;
System.out.println("Processing " + formatExt);
try (RasterImage image = (RasterImage) Image.load(inputFile))
{
//Additional code examples can be found at
//https://docs.aspose.com/imaging/java/remove-background-from-images/#graph-cut-auto-masking-using-imagingcloud-api
AutoMaskingGraphCutOptions maskingOptions = new AutoMaskingGraphCutOptions();
maskingOptions.setFeatheringRadius(2);
maskingOptions.setMethod(SegmentationMethod.GraphCut);
AutoMaskingArgs maskingArgs = new AutoMaskingArgs();
maskingArgs.setObjectsRectangles(new Rectangle[]
{
// girl's bound box
new Rectangle(87, 47, 123, 308),
// boy's bound box
new Rectangle(180, 24, 126, 224)
});
maskingOptions.setArgs(maskingArgs);
PngOptions pngOptions = new PngOptions();
pngOptions.setColorType(PngColorType.TruecolorWithAlpha);
pngOptions.setSource(new FileCreateSource(outputFile, false));
maskingOptions.setExportOptions(pngOptions);
IMaskingSession maskingSession = new ImageMasking(image)
.createSession(maskingOptions);
try
{
// first run of segmentation
maskingSession.decompose().dispose();
AutoMaskingArgs argsWithUserMarkers = new AutoMaskingArgs();
argsWithUserMarkers.setObjectsPoints(new Point[][]
{
// background markers
null,
// foreground markers
new UserMarker()
// boy's head
.addPoint(218, 48, 10)
// girl's head
.addPoint(399, 66, 10)
// girs's body
.addPoint(158, 141, 10)
.addPoint(158, 209, 20)
.addPoint(115, 225, 5)
.getPoints()
});
try (MaskingResult maskingResult = maskingSession
.improveDecomposition(argsWithUserMarkers))
{
try (Image resultImage = maskingResult.get_Item(1).getImage())
{
resultImage.save();
}
}
}
finally
{
maskingSession.dispose();
}
}
//Remove rasterized vector image
if (isVectorFormat)
{
new File(inputFile).delete();
}
}
});
}
public static void removeBackgroundAutoProcessingWithAssumedObjects()
{
List<String> rasterFormats = Arrays.asList("jpg", "png", "bmp", "apng",
"dicom", "jp2", "j2k", "tga", "webp", "tif", "gif");
List<String> vectorFormats = Arrays.asList("svg", "otg", "odg", "eps",
"wmf", "emf", "wmz", "emz", "cmx", "cdr");
List<String> allFormats = new LinkedList<>(rasterFormats);
allFormats.addAll(vectorFormats);
allFormats.forEach(new Consumer<String>() {
@Override
public void accept(String formatExt)
{
String inputFile = templatesFolder + "couple." + formatExt;
boolean isVectorFormat = vectorFormats.contains(formatExt);
//Need to rasterize vector formats before background remove
if (isVectorFormat)
{
inputFile = rasterizeVectorImage(formatExt, inputFile);
}
String outputFile = templatesFolder
+ "remove_background_auto_assumed_objects." + formatExt;
System.out.println("Processing " + formatExt);
try (RasterImage image = (RasterImage) Image.load(inputFile))
{
//Additional code examples can be found at
//https://docs.aspose.com/imaging/java/remove-background-from-images/#graph-cut-auto-masking-using-imagingcloud-api
AutoMaskingGraphCutOptions maskingOptions = new AutoMaskingGraphCutOptions();
final LinkedList<AssumedObjectData> assumedObjects = new LinkedList<>();
// girl's bound box
assumedObjects.add(
new AssumedObjectData(DetectedObjectType.Human,
new Rectangle(87, 47, 123, 308)));
// boy's bound box
assumedObjects.add(
new AssumedObjectData(DetectedObjectType.Human,
new Rectangle(180, 24, 126, 224)));
maskingOptions.setAssumedObjects(assumedObjects);
maskingOptions.setCalculateDefaultStrokes(true);
maskingOptions.setFeatheringRadius(1);
maskingOptions.setMethod(SegmentationMethod.GraphCut);
PngOptions pngOptions = new PngOptions();
pngOptions.setColorType(PngColorType.TruecolorWithAlpha);
pngOptions.setSource(new FileCreateSource(outputFile, false));
maskingOptions.setExportOptions(pngOptions);
maskingOptions.setBackgroundReplacementColor(Color.getGreen());
try (MaskingResult maskingResult = new ImageMasking(image)
.decompose(maskingOptions))
{
try (Image resultImage = maskingResult.get_Item(1).getImage())
{
resultImage.save();
}
}
}
//Remove rasterized vector image
if (isVectorFormat)
{
new File(inputFile).delete();
}
}
});
}
public static void removeBackgroundAutoProcessing()
{
List<String> rasterFormats = Arrays.asList("jpg", "png", "bmp", "apng",
"dicom", "jp2", "j2k", "tga", "webp", "tif", "gif");
List<String> vectorFormats = Arrays.asList("svg", "otg", "odg", "eps",
"wmf", "emf", "wmz", "emz", "cmx", "cdr");
List<String> allFormats = new LinkedList<>(rasterFormats);
allFormats.addAll(vectorFormats);
allFormats.forEach(new Consumer<String>() {
@Override
public void accept(String formatExt)
{
String inputFile = templatesFolder + "couple." + formatExt;
boolean isVectorFormat = vectorFormats.contains(formatExt);
//Need to rasterize vector formats before background remove
if (isVectorFormat)
{
inputFile = rasterizeVectorImage(formatExt, inputFile);
}
String outputFile = templatesFolder + "remove_background_auto." + formatExt;
System.out.println("Processing " + formatExt);
try (RasterImage image = (RasterImage) Image.load(inputFile))
{
//Additional code examples can be found at
//https://docs.aspose.com/imaging/java/remove-background-from-images/#graph-cut-auto-masking-using-imagingcloud-api
AutoMaskingGraphCutOptions maskingOptions = new AutoMaskingGraphCutOptions();
maskingOptions.setFeatheringRadius(1);
maskingOptions.setMethod(SegmentationMethod.GraphCut);
PngOptions pngOptions = new PngOptions();
pngOptions.setColorType(PngColorType.TruecolorWithAlpha);
pngOptions.setSource(new FileCreateSource(outputFile, false));
maskingOptions.setExportOptions(pngOptions);
maskingOptions.setBackgroundReplacementColor(Color.getGreen());
try (MaskingResult maskingResult = new ImageMasking(image)
.decompose(maskingOptions))
{
try (Image resultImage = maskingResult.get_Item(1).getImage())
{
resultImage.save();
}
}
}
//Remove rasterized vector image
if (isVectorFormat)
{
new File(inputFile).delete();
}
}
});
}
public static void removeBackgroundGenericExample()
{
List<String> rasterFormats = Arrays.asList("jpg", "png", "bmp", "apng",
"dicom", "jp2", "j2k", "tga", "webp", "tif", "gif");
List<String> vectorFormats = Arrays.asList("svg", "otg", "odg", "eps",
"wmf", "emf", "wmz", "emz", "cmx", "cdr");
List<String> allFormats = new LinkedList<>(rasterFormats);
allFormats.addAll(vectorFormats);
allFormats.forEach(new Consumer<String>() {
@Override
public void accept(String formatExt)
{
String inputFile = templatesFolder + "couple." + formatExt;
boolean isVectorFormat = vectorFormats.contains(formatExt);
//Need to rasterize vector formats before background remove
if (isVectorFormat)
{
inputFile = rasterizeVectorImage(formatExt, inputFile);
}
String outputFile = templatesFolder + "remove_background." + formatExt;
System.out.println("Processing " + formatExt);
try (RasterImage image = (RasterImage) Image.load(inputFile))
{
//Additional code examples can be found at
//https://docs.aspose.com/imaging/java/remove-background-from-images/#graph-cut-auto-masking-using-imagingcloud-api
AutoMaskingGraphCutOptions maskingOptions = new AutoMaskingGraphCutOptions();
maskingOptions.setCalculateDefaultStrokes(true);
maskingOptions.setFeatheringRadius(1);
maskingOptions.setMethod(SegmentationMethod.GraphCut);
PngOptions pngOptions = new PngOptions();
pngOptions.setColorType(PngColorType.TruecolorWithAlpha);
pngOptions.setSource(new FileCreateSource(outputFile, false));
maskingOptions.setExportOptions(pngOptions);
maskingOptions.setBackgroundReplacementColor(Color.getGreen());
try (MaskingResult maskingResult = new ImageMasking(image)
.decompose(maskingOptions))
{
try (Image resultImage = maskingResult.get_Item(1).getImage())
{
resultImage.save();
}
}
}
//Remove rasterized vector image
if (isVectorFormat)
{
new File(inputFile).delete();
}
}
});
}
private static String rasterizeVectorImage(String formatExt, String inputFile)
{
String outputFile = templatesFolder + "rasterized."+ formatExt + ".png";
try (Image image = Image.load(inputFile))
{
image.save(outputFile, new PngOptions());
}
return outputFile;
}
class UserMarker
{
private final List<Point> list = new LinkedList<>();
public UserMarker addPoint(int left, int top, int radius)
{
for (int y = top - radius; y <= top + radius; y++)
{
for (int x = left - radius; x <= left + radius; x++)
{
this.list.add(new Point(x, y));
}
}
return this;
}
public Point[] getPoints()
{
return this.list.toArray(new Point[0]);
}
}
view raw remove-change-background-generic-examples.java hosted with ❤ by GitHub
 

    • 关于 Java API 的 Aspose.Imaging

    Aspose.Imaging API 是一种图像处理解决方案，用于在应用程序中创建、修改、绘制或转换图像（照片）。它提供：跨平台的图像处理，包括但不限于各种图像格式之间的转换（包括统一的多页或多帧图像处理）、绘图等修改、使用图形基元、转换（调整大小、裁剪、翻转和旋转） 、二值化、灰度、调整）、高级图像处理功能（过滤、抖动、遮罩、去偏斜）和内存优化策略。它是一个独立的库，不依赖任何软件进行图像操作。可以在项目中使用原生 API 轻松添加高性能图像转换功能。这些是 100% 私有的本地 API，图像在您的服务器上处理。

    通过在线应用更改 CDR 中的背景

    通过访问我们的 Live Demos 网站 更改 CDR 文档的背景。 现场演示有以下好处

      无需下载或设置任何东西
      无需编写任何代码
      只需上传您的 CDR 文件并点击“立即更改背景”按钮
      立即获取生成文件的下载链接

    CDR 什么是 CDR 文件格式

    CDR 文件是使用 CorelDRAW 本地创建的矢量绘图图像文件，用于存储编码和压缩的数字图像。这样的绘图文件包含文本、线条、形状、图像、颜色和效果，用于图像内容的矢量表示。 CDR 文件可以使用 CorelDRAW 作为主要应用程序打开，也可以转换为其他格式，例如 PDF、JPG、PNG、BMP 和 AI。它可用于表示各种图形数据，如小册子、小报、信封和明信片。除了 CorelDRAW，Corel Paintshop Pro 和 CorelDRAW Graphics Suite 等其他 Corel 产品也可以打开 CDR 文件格式。

    阅读更多

    其他支持的更改背景格式

    使用 Java，可以轻松更改不同格式的背景，包括。

    APNG (动画便携式网络图形)
    BMP (位图图片)
    ICO (窗口图标)
    JPG (联合摄影专家组)
    DIB (设备无关位图)
    DICOM (数码影像与通讯)
    DJVU (图形格式)
    DNG (数码相机图像)
    EMF (增强的元文件格式)
    EMZ (Windows 压缩增强元文件)
    GIF (图形交换格式)
    JP2 (JPEG 2000)
    J2K (小波压缩图像)
    PNG (便携式网络图形)
    TIFF (标记图像格式)
    WEBP (光栅 Web 图像)
    WMF (微软视窗元文件)
    WMZ (压缩的 Windows Media Player 皮肤)
    TGA (塔加图形)
    SVG (可缩放矢量图形)
    EPS (封装的 PostScript 语言)
    CMX (Corel 交换图像)
    OTG (开放文档标准)
    ODG (Apache OpenOffice 绘图格式)
    AVIF