RasterCachedImage

Inheritance: java.lang.Object, RasterImage

Represents a raster image supporting raster graphics operations. This image caches pixel data when required.

Methods

Method	Description
isCached()	Gets a value indicating whether image data is cached currently.
cacheData()	Caches the data and ensures no additional data loading will be performed from the underlying DataStreamSupporter.DataStreamContainer .
resize(int newWidth, int newHeight, int resizeType)	Resizes the image.
resize(int newWidth, int newHeight, ImageResizeSettings settings)	Resizes the image.
rotate(float angle, boolean resizeProportionally, com.aspose.cad.Color backgroundColor)	Rotate image around the center.
crop(com.aspose.cad.Rectangle rectangle)	Cropping the image.
dither(int ditheringMethod, int bitsCount, com.aspose.cad.IColorPalette customPalette)	Performs dithering on the current image.
grayscale()	Transformation of an image to its grayscale representation
binarizeFixed(byte threshold)	Binarization of an image with predefined threshold
binarizeOtsu()	Binarization of an image with Otsu thresholding
binarizeBradley(double brightnessDifference)	Binarization of an image using Bradley’s adaptive thresholding algorithm using the integral image thresholding
adjustBrightness(int brightness)	Adjust of a brightness for image.
adjustContrast(float contrast)	Image contrasting
adjustGamma(float gammaRed, float gammaGreen, float gammaBlue)	Gamma-correction of an image.
adjustGamma(float gamma)	Gamma-correction of an image.
getFormatSpecificPalette()	Gets palette from format-specific places
setFormatSpecificPalette(com.aspose.cad.IColorPalette newPalette)	Sets palette into format-specific places

isCached()

public final boolean isCached()

Gets a value indicating whether image data is cached currently.

Returns: boolean - true if image data is cached; otherwise, false .

cacheData()

public final void cacheData()

Caches the data and ensures no additional data loading will be performed from the underlying DataStreamSupporter.DataStreamContainer .

resize(int newWidth, int newHeight, int resizeType)

public final void resize(int newWidth, int newHeight, int resizeType)

Resizes the image.

Parameters:

Parameter	Type	Description
newWidth	int	The new width.
newHeight	int	The new height.
resizeType	int	The resize type.

resize(int newWidth, int newHeight, ImageResizeSettings settings)

public final void resize(int newWidth, int newHeight, ImageResizeSettings settings)

Resizes the image.

Parameters:

Parameter	Type	Description
newWidth	int	The new width.
newHeight	int	The new height.
settings	ImageResizeSettings	The resize settings.

rotate(float angle, boolean resizeProportionally, com.aspose.cad.Color backgroundColor)

public void rotate(float angle, boolean resizeProportionally, com.aspose.cad.Color backgroundColor)

Rotate image around the center.

Parameters:

Parameter	Type	Description
angle	float	The rotate angle in degrees. Positive values will rotate clockwise.
resizeProportionally	boolean	if set to true you will have your image size changed according to rotated rectangle (corner points) projections in other case that leaves dimensions untouched and only internal image contents are rotated.
backgroundColor	com.aspose.cad.Color	Color of the background.

crop(com.aspose.cad.Rectangle rectangle)

public void crop(com.aspose.cad.Rectangle rectangle)

Cropping the image.

Parameters:

Parameter	Type	Description
rectangle	com.aspose.cad.Rectangle	The rectangle.

dither(int ditheringMethod, int bitsCount, com.aspose.cad.IColorPalette customPalette)

public void dither(int ditheringMethod, int bitsCount, com.aspose.cad.IColorPalette customPalette)

Performs dithering on the current image.

Parameters:

Parameter	Type	Description
ditheringMethod	int	The dithering method.
bitsCount	int	The final bits count for dithering.
customPalette	com.aspose.cad.IColorPalette	The custom palette for dithering.

grayscale()

public void grayscale()

Transformation of an image to its grayscale representation

binarizeFixed(byte threshold)

public void binarizeFixed(byte threshold)

Binarization of an image with predefined threshold

Parameters:

Parameter	Type	Description
threshold	byte	Threshold value. If corresponding gray value of a pixel is greater than threshold, a value of 255 will be assigned to it, 0 otherwise.

binarizeOtsu()

public void binarizeOtsu()

Binarization of an image with Otsu thresholding

binarizeBradley(double brightnessDifference)

public void binarizeBradley(double brightnessDifference)

Binarization of an image using Bradley’s adaptive thresholding algorithm using the integral image thresholding

Parameters:

Parameter	Type	Description
brightnessDifference	double	The brightness difference between pixel and the average of an s x s window of pixels centered around this pixel.

adjustBrightness(int brightness)

public void adjustBrightness(int brightness)

Adjust of a brightness for image.

Parameters:

Parameter	Type	Description
brightness	int	Brightness value.

adjustContrast(float contrast)

public void adjustContrast(float contrast)

Image contrasting

Parameters:

Parameter	Type	Description
contrast	float	Contrast value (in range [-100; 100])

adjustGamma(float gammaRed, float gammaGreen, float gammaBlue)

public void adjustGamma(float gammaRed, float gammaGreen, float gammaBlue)

Gamma-correction of an image.

Parameters:

Parameter	Type	Description
gammaRed	float	Gamma for red channel coefficient
gammaGreen	float	Gamma for green channel coefficient
gammaBlue	float	Gamma for blue channel coefficient

adjustGamma(float gamma)

public void adjustGamma(float gamma)

Gamma-correction of an image.

Parameters:

Parameter	Type	Description
gamma	float	Gamma for red, green and blue channels coefficient

getFormatSpecificPalette()

public com.aspose.cad.IColorPalette getFormatSpecificPalette()

Gets palette from format-specific places

Returns: com.aspose.cad.IColorPalette - Format-specific IColorPalette .

setFormatSpecificPalette(com.aspose.cad.IColorPalette newPalette)

public void setFormatSpecificPalette(com.aspose.cad.IColorPalette newPalette)

Sets palette into format-specific places

Parameters:

Parameter	Type	Description
newPalette	com.aspose.cad.IColorPalette	New 32-bit ARGB palette.