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java.lang.Objectnet.sourceforge.openstego.util.ImageUtil
public class ImageUtil
Image utilities
Field Summary | |
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static java.lang.String |
DEFAULT_IMAGE_TYPE
Default image type in case not provided |
Method Summary | |
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static java.awt.image.BufferedImage |
byteArrayToImage(byte[] imageData,
java.lang.String imgFileName)
Method to convert byte array to image |
static java.awt.image.BufferedImage |
cropImage(java.awt.image.BufferedImage image,
int cropWidth,
int cropHeight)
Method crop an image to the given dimensions. |
static java.awt.image.BufferedImage |
generateRandomImage(int numOfPixels)
Method to generate a random image filled with noise. |
static java.awt.image.BufferedImage |
getDiffImage(java.awt.image.BufferedImage leftImage,
java.awt.image.BufferedImage rightImage)
Method generate difference image between two given images |
static java.awt.image.BufferedImage |
getImageFromYuv(java.util.ArrayList yuv)
Get image (with RGB data) from given YUV data |
static java.util.ArrayList |
getYuvFromImage(java.awt.image.BufferedImage image)
Get YUV data from given image's RGB data |
static byte[] |
imageToByteArray(java.awt.image.BufferedImage image,
java.lang.String imageFileName,
OpenStegoPlugin plugin)
Method to convert BufferedImage to byte array |
static java.awt.image.BufferedImage |
makeImageSquare(java.awt.image.BufferedImage image)
Method to pad an image such that it becomes perfect square. |
static int |
pixelRange(double p)
Utility method to limit the value within [0,255] range |
static int |
pixelRange(int p)
Utility method to limit the value within [0,255] range |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static java.lang.String DEFAULT_IMAGE_TYPE
Method Detail |
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public static java.awt.image.BufferedImage generateRandomImage(int numOfPixels) throws OpenStegoException
numOfPixels
- Number of pixels required in the image
OpenStegoException
public static byte[] imageToByteArray(java.awt.image.BufferedImage image, java.lang.String imageFileName, OpenStegoPlugin plugin) throws OpenStegoException
image
- Image dataimageFileName
- Name of the image fileplugin
- Reference to the plugin
OpenStegoException
public static java.awt.image.BufferedImage byteArrayToImage(byte[] imageData, java.lang.String imgFileName) throws OpenStegoException
imageData
- Image data as byte arrayimgFileName
- Name of the image file
OpenStegoException
public static java.util.ArrayList getYuvFromImage(java.awt.image.BufferedImage image)
image
- Image
public static java.awt.image.BufferedImage getImageFromYuv(java.util.ArrayList yuv)
yuv
- List with three elements of two-dimensional int's - Y, U and V
public static int pixelRange(int p)
p
- Input value
public static int pixelRange(double p)
p
- Input value
public static java.awt.image.BufferedImage makeImageSquare(java.awt.image.BufferedImage image)
image
- Input image
public static java.awt.image.BufferedImage cropImage(java.awt.image.BufferedImage image, int cropWidth, int cropHeight)
image
- Input imagecropWidth
- Width required for cropped imagecropHeight
- Height required for cropped image
public static java.awt.image.BufferedImage getDiffImage(java.awt.image.BufferedImage leftImage, java.awt.image.BufferedImage rightImage) throws OpenStegoException
leftImage
- Left input imagerightImage
- Right input image
OpenStegoException
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