程序包 tech.testnx.cah.common.utils

类 ImageUtility

java.lang.Object

tech.testnx.cah.common.utils.ImageUtility

public class ImageUtility
extends Object

作者:

Yun

字段概要

字段

修饰符和类型	字段	说明
static ImageUtility	INSTANCE

方法概要

修饰符和类型	方法	说明
byte[]	convertToBytesFromImage(BufferedImage image)	Convert an image to byte array
BufferedImage	cropImage(BufferedImage image, Rectangle rect)	Crop or Resize an image
boolean	imageComparer(File expectedImage, File actualImage, File diffImage, int colorDistance, int pixelThreshold, StringBuilder resultMessage)	API: Compare two images and highlight the differ image If diffImage is null, will not produce differ image If diffImage is not null, the differ image with RED highlight "colorDistance", it means that the distance(difference) of two color can be acceptable.
BufferedImage	mergeImagesBySameWidth(List<BufferedImage> images)	Merge images with same width
BufferedImage	readImageFromBytes(byte[] imageBytes)	Read image from bytes array
BufferedImage	readImageFromFile(File file)	Read image from file

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

INSTANCE

public static final ImageUtility INSTANCE

方法详细资料

imageComparer

public boolean imageComparer(File expectedImage,
                             File actualImage,
                             File diffImage,
                             int colorDistance,
                             int pixelThreshold,
                             StringBuilder resultMessage)
                      throws Exception

API: Compare two images and highlight the differ image
If diffImage is null, will not produce differ image
If diffImage is not null, the differ image with RED highlight
"colorDistance", it means that the distance(difference) of two color can be acceptable. if set 0, then color must be completely same. The value should be greater than or equal 0;
"pixelThreshold", it means that how many the unmatched pixels can be acceptable. if set 0, only all pixels are same, return TRUE. The value should be greater than or equal 0;
If dimensions of two images are different, then return FALSE and the differ image is merged by two original images.
Note: only support image types: GIF, PNG, JPEG, BMP, and WBMP

抛出:

Exception

readImageFromBytes

public BufferedImage readImageFromBytes(byte[] imageBytes)
                                 throws IOException

Read image from bytes array

抛出:

IOException

readImageFromFile

public BufferedImage readImageFromFile(File file)
                                throws IOException

Read image from file

抛出:

IOException

cropImage

public BufferedImage cropImage(BufferedImage image,
                               Rectangle rect)

Crop or Resize an image

convertToBytesFromImage

public byte[] convertToBytesFromImage(BufferedImage image)
                               throws IOException

Convert an image to byte array

抛出:

IOException

mergeImagesBySameWidth

public BufferedImage mergeImagesBySameWidth(List<BufferedImage> images)

Merge images with same width