org.javlo.image

Class ImageEngine

java.lang.Object

org.javlo.image.ImageEngine

public class ImageEngine
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static Color	DETECT_COLOR special color to set automatic color (value is random)
static Color	NEUTRAL_COLOR
static Color	TRANSPARENT_COLOR

Constructor Summary

Constructors

Constructor and Description
ImageEngine()

Method Summary

Modifier and Type	Method and Description
static BufferedImage	_scale(BufferedImage img, Integer inTargetWidth, Integer inTargetHeight)
static void	addAlpha(BufferedImage img, float inAlpha)
static BufferedImage	addPictureBorder(BufferedImage image, Color backgroundColors) add picture border (transform portrait (phone picture) to landscape).
static BufferedImage	addTransparanceBorder(BufferedImage image, Color backgroundColors, int size, int degradedSize, int position)
static BufferedImage	applyBgColor(BufferedImage image, Color bgColor)
static BufferedImage	applyFilter(BufferedImage source, BufferedImage filter, boolean cropResize, boolean addBorder, int mt, int ml, int mr, int mb, int fzx, int fzy, boolean isFocus, Color bgColor, boolean hq)
static void	applySepiaFilter(BufferedImage img, int sepiaIntensity)
static BufferedImage	avg(BufferedImage original)
static BufferedImage	blurring(BufferedImage img)
static BufferedImage	borderCorner(BufferedImage image, Color bg)
static BufferedImage	borderCorner(BufferedImage image, int radius, Color bg)
static BufferedImage	centerInterest(BufferedImage source, int interestX, int interestY, int minWidth, int minHeight)
static double	closeColor(BufferedImage image, Color color) search a color inside a image.
static Color	combineColor(Color color1, Color color2) combine two color with transparency on first
static Color	combineColor(Color c1, Color c2, float alpha) combine two color with transparency
static void	compressJpegFile(BufferedImage image, OutputStream out, double compressionQuality)
static BufferedImage	convertRGBAToIndexed(BufferedImage src)
static BufferedImage	createAlpha(BufferedImage image, Color bg) replace bg color with transparency
static BufferedImage	cropImage(BufferedImage image, int width, int height, int inX, int inY)
static BufferedImage	dashed(BufferedImage image, int size) create transparent dash on 1 pixel on 2
static BufferedImage	desaturation(BufferedImage original)
static BufferedImage	drawBorderCorner(BufferedImage image, int radius, Color bg, int size)
static boolean	equalColor(Color c1, Color c2, int tolerance) test if two color is the same with tolerance
static BufferedImage	flip(BufferedImage image, boolean verticaly)
static int	getColor(BufferedImage image, int x, int y) get a color in a image, coord can be out of the image size.
static int	getColor(BufferedImage image, int x, int y, Color outCol)
static int	getColorDistance(Color c1, Color c2) the "mathematical" distance between two color.
static float	getColorDistanceFactor(Color c1, Color c2) the "mathematical" distance between two color. 1 : balck and white, 0 : same color
static Color	getTextColorOnBackground(Color backgroundColor) return white on dark background and black otherwise
static BufferedImage	grayscale(BufferedImage inImage)
static void	insertImage(BufferedImage source, BufferedImage target, int posx, int posy)
static boolean	isDark(BufferedImage image) return true if picture is to close of black than white
static BufferedImage	lightBlurring(BufferedImage img)
static BufferedImage	loadImage(File file)
static BufferedImage	luminosity(BufferedImage original)
static void	main(String[] args)
static Color	neverNullColor(Color color) if color null return transparent.
static BufferedImage	projectionImage(BufferedImage back, BufferedImage top, BufferedImage source, Polygon4 p4, float alpha)
static BufferedImage	RBGAdjust(BufferedImage image, Color adjustColor)
static BufferedImage	removeAlpha(BufferedImage image)
static BufferedImage	replaceAlpha(BufferedImage image, Color bg)
static BufferedImage	resize(BufferedImage bi, Integer width, Integer height, boolean hq)
static BufferedImage	resize(BufferedImage source, int inWidth, int inHeight, boolean cropResize, boolean addBorder, int mt, int ml, int mr, int mb, Color bgColor, int interestX, int interestY, boolean focusZone, boolean hq) resize a picture
static BufferedImage	resizeDashed(BufferedImage image, int factor) create transparent dash
static BufferedImage	resizeHeight(BufferedImage bi, int height, Color bgColor, boolean hq)
static BufferedImage	resizeImage(BufferedImage in, int width, int height)
static BufferedImage	resizeWidth(BufferedImage bi, int width, boolean hq)
static BufferedImage	resizeWidth(BufferedImage bi, int width, int mt, int mr, int ml, int mb, Color bgColor, boolean hq)
static BufferedImage	rotate(BufferedImage image, int angle, Color bg) rotate the image with angle in degree. note than result can be bigger than source.
static BufferedImage	scale(BufferedImage img, Integer inTargetWidth, Integer inTargetHeight, boolean hq)
static void	storeImage(BufferedImage img, File file)
static BufferedImage	trim(BufferedImage image, Color color, int tolerance)
static BufferedImage	trimBottom(BufferedImage image, Color color, int tolerance)
static BufferedImage	trimLeft(BufferedImage image, Color color, int tolerance)
static BufferedImage	trimRight(BufferedImage image, Color color, int tolerance)
static BufferedImage	trimTop(BufferedImage image, Color color, int tolerance)
static BufferedImage	ultraLight(BufferedImage image)
static BufferedImage	web2(BufferedImage image, Color bgColor, int height, int separation)
static BufferedImage	zoom(BufferedImage img, double zoom, int interestX, int interestY)

Methods inherited from class java.lang.Object

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

Field Detail

NEUTRAL_COLOR

public static final Color NEUTRAL_COLOR

TRANSPARENT_COLOR

public static final Color TRANSPARENT_COLOR

DETECT_COLOR

public static final Color DETECT_COLOR

special color to set automatic color (value is random)

Constructor Detail

ImageEngine

public ImageEngine()

Method Detail

loadImage

public static BufferedImage loadImage(File file)
                               throws IOException

Throws:

IOException

storeImage

public static void storeImage(BufferedImage img,
                              File file)
                       throws IOException

Throws:

IOException

blurring

public static BufferedImage blurring(BufferedImage img)

luminosity

public static BufferedImage luminosity(BufferedImage original)

avg

public static BufferedImage avg(BufferedImage original)

desaturation

public static BufferedImage desaturation(BufferedImage original)

lightBlurring

public static BufferedImage lightBlurring(BufferedImage img)

resize

public static BufferedImage resize(BufferedImage bi,
                                   Integer width,
                                   Integer height,
                                   boolean hq)

zoom

public static BufferedImage zoom(BufferedImage img,
                                 double zoom,
                                 int interestX,
                                 int interestY)

scale

public static BufferedImage scale(BufferedImage img,
                                  Integer inTargetWidth,
                                  Integer inTargetHeight,
                                  boolean hq)

_scale

public static BufferedImage _scale(BufferedImage img,
                                   Integer inTargetWidth,
                                   Integer inTargetHeight)

getColor

public static int getColor(BufferedImage image,
                           int x,
                           int y)

get a color in a image, coord can be out of the image size.

Parameters:

image - a standard java image

x - if < 0 -> get 0 id > width -> get width-1

y - if < 0 -> get 0 id > length -> get length-1

Returns:

the color of a pixel

neverNullColor

public static Color neverNullColor(Color color)

if color null return transparent.

Parameters:

color -

Returns:

getColor

public static int getColor(BufferedImage image,
                           int x,
                           int y,
                           Color outCol)

resizeHeight

public static BufferedImage resizeHeight(BufferedImage bi,
                                         int height,
                                         Color bgColor,
                                         boolean hq)

resizeWidth

public static BufferedImage resizeWidth(BufferedImage bi,
                                        int width,
                                        boolean hq)

resizeWidth

public static BufferedImage resizeWidth(BufferedImage bi,
                                        int width,
                                        int mt,
                                        int mr,
                                        int ml,
                                        int mb,
                                        Color bgColor,
                                        boolean hq)

drawBorderCorner

public static BufferedImage drawBorderCorner(BufferedImage image,
                                             int radius,
                                             Color bg,
                                             int size)

borderCorner

public static BufferedImage borderCorner(BufferedImage image,
                                         int radius,
                                         Color bg)

RBGAdjust

public static BufferedImage RBGAdjust(BufferedImage image,
                                      Color adjustColor)

borderCorner

public static BufferedImage borderCorner(BufferedImage image,
                                         Color bg)

replaceAlpha

public static BufferedImage replaceAlpha(BufferedImage image,
                                         Color bg)

createAlpha

public static BufferedImage createAlpha(BufferedImage image,
                                        Color bg)

replace bg color with transparency

Parameters:

image -

bg -

Returns:

image with transparency

removeAlpha

public static BufferedImage removeAlpha(BufferedImage image)

applyFilter

public static BufferedImage applyFilter(BufferedImage source,
                                        BufferedImage filter,
                                        boolean cropResize,
                                        boolean addBorder,
                                        int mt,
                                        int ml,
                                        int mr,
                                        int mb,
                                        int fzx,
                                        int fzy,
                                        boolean isFocus,
                                        Color bgColor,
                                        boolean hq)

centerInterest

public static BufferedImage centerInterest(BufferedImage source,
                                           int interestX,
                                           int interestY,
                                           int minWidth,
                                           int minHeight)

resize

public static BufferedImage resize(BufferedImage source,
                                   int inWidth,
                                   int inHeight,
                                   boolean cropResize,
                                   boolean addBorder,
                                   int mt,
                                   int ml,
                                   int mr,
                                   int mb,
                                   Color bgColor,
                                   int interestX,
                                   int interestY,
                                   boolean focusZone,
                                   boolean hq)

resize a picture

Parameters:

source - the source image

inWidth - new with

inHeight - new height

cropResize - true if image must be croped or false if image must be deformed

mt - margin top

ml - margin left

mr - margin right

mb - margin bottom

bgColor - background color (for margin and alpha)

interestX - x position of the interest zone in the picture

interestY - y position of the interest zone in the picture

Returns:

a resized image

insertImage

public static void insertImage(BufferedImage source,
                               BufferedImage target,
                               int posx,
                               int posy)

applyBgColor

public static BufferedImage applyBgColor(BufferedImage image,
                                         Color bgColor)

resizeImage

public static BufferedImage resizeImage(BufferedImage in,
                                        int width,
                                        int height)
                                 throws IOException

Throws:

IOException

web2

public static BufferedImage web2(BufferedImage image,
                                 Color bgColor,
                                 int height,
                                 int separation)

cropImage

public static BufferedImage cropImage(BufferedImage image,
                                      int width,
                                      int height,
                                      int inX,
                                      int inY)

compressJpegFile

public static void compressJpegFile(BufferedImage image,
                                    OutputStream out,
                                    double compressionQuality)

rotate

public static BufferedImage rotate(BufferedImage image,
                                   int angle,
                                   Color bg)

rotate the image with angle in degree. note than result can be bigger than source.

Parameters:

image -

angle -

Returns:

dashed

public static BufferedImage dashed(BufferedImage image,
                                   int size)

create transparent dash on 1 pixel on 2

Parameters:

image -

Returns:

a image width same width and same height.

resizeDashed

public static BufferedImage resizeDashed(BufferedImage image,
                                         int factor)

create transparent dash

Parameters:

image -

Returns:

a image width same width and same height.

grayscale

public static BufferedImage grayscale(BufferedImage inImage)

getColorDistance

public static int getColorDistance(Color c1,
                                   Color c2)

the "mathematical" distance between two color.

Parameters:

c1 -

c2 -

Returns:

getColorDistanceFactor

public static float getColorDistanceFactor(Color c1,
                                           Color c2)

the "mathematical" distance between two color. 1 : balck and white, 0 : same color

Parameters:

c1 -

c2 -

Returns:

getTextColorOnBackground

public static Color getTextColorOnBackground(Color backgroundColor)

return white on dark background and black otherwise

Parameters:

backgroundColor -

Returns:

closeColor

public static double closeColor(BufferedImage image,
                                Color color)

search a color inside a image.

Parameters:

image -

color -

Returns:

the distance from all pixels to color (0:no difference (all pixel are the same and is exactly the color value) 1 : max difference (image in black and color is white)).

applySepiaFilter

public static void applySepiaFilter(BufferedImage img,
                                    int sepiaIntensity)

Parameters:

img - Image to modify

sepiaIntensity - From 0-255, 30 produces nice results

Throws:

Exception

flip

public static BufferedImage flip(BufferedImage image,
                                 boolean verticaly)

equalColor

public static boolean equalColor(Color c1,
                                 Color c2,
                                 int tolerance)

test if two color is the same with tolerance

Parameters:

c1 -

c2 -

tolerance - difference between two colors 0 >> 3*255

Returns:

trimTop

public static BufferedImage trimTop(BufferedImage image,
                                    Color color,
                                    int tolerance)

trimLeft

public static BufferedImage trimLeft(BufferedImage image,
                                     Color color,
                                     int tolerance)

trimBottom

public static BufferedImage trimBottom(BufferedImage image,
                                       Color color,
                                       int tolerance)

trimRight

public static BufferedImage trimRight(BufferedImage image,
                                      Color color,
                                      int tolerance)

trim

public static BufferedImage trim(BufferedImage image,
                                 Color color,
                                 int tolerance)

ultraLight

public static BufferedImage ultraLight(BufferedImage image)

combineColor

public static Color combineColor(Color c1,
                                 Color c2,
                                 float alpha)

combine two color with transparency

Parameters:

c1 - front color

c2 - back color

alpha - transparency (0>1)

combineColor

public static Color combineColor(Color color1,
                                 Color color2)

combine two color with transparency on first

Parameters:

c1 - front color

c2 - back color

addAlpha

public static void addAlpha(BufferedImage img,
                            float inAlpha)

projectionImage

public static BufferedImage projectionImage(BufferedImage back,
                                            BufferedImage top,
                                            BufferedImage source,
                                            Polygon4 p4,
                                            float alpha)
                                     throws Exception

Throws:

Exception

isDark

public static boolean isDark(BufferedImage image)

return true if picture is to close of black than white

Parameters:

image -

Returns:

addPictureBorder

public static BufferedImage addPictureBorder(BufferedImage image,
                                             Color backgroundColors)

add picture border (transform portrait (phone picture) to landscape).

Parameters:

image -

Returns:

addTransparanceBorder

public static BufferedImage addTransparanceBorder(BufferedImage image,
                                                  Color backgroundColors,
                                                  int size,
                                                  int degradedSize,
                                                  int position)

Parameters:

image -

backgroundColors -

size - size of border (in %)

degradedSize - degraded size bewteen background and image

position - 1:top 2: right 3:bottom 4:left

Returns:

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

convertRGBAToIndexed

public static BufferedImage convertRGBAToIndexed(BufferedImage src)