Package io.scanbot.sdk.pdfgeneration

Enum Class ResamplingMethod

java.lang.Object

java.lang.Enum<ResamplingMethod>

io.scanbot.sdk.pdfgeneration.ResamplingMethod

All Implemented Interfaces:

Serializable, Comparable<ResamplingMethod>, Constable

public enum ResamplingMethod
extends Enum<ResamplingMethod>

Resampling method.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
AREA	Accurate, produces moire-free results, but tends to produce blurrier images.
CUBIC	Bi-cubic interpolation.
LANCZOS4	Lanczos (Sinc) interpolation over 8x8 neighborhood.
LINEAR	Bi-linear interpolation.
NEAREST	Nearest-neighbor interpolation.
NONE	Always geometrically rescale the image to fit the page if necessary.

Method Summary

Modifier and Type	Method	Description
static ResamplingMethod	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ResamplingMethod[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NONE

public static final ResamplingMethod NONE

Always geometrically rescale the image to fit the page if necessary. Fast. Otherwise, downscale the bitmap to match the `dpi` setting via the selected method before adding it to the PDF if the calculated image DPI after stretching is greater than `dpi`. Slower.

NEAREST

public static final ResamplingMethod NEAREST

Nearest-neighbor interpolation. Lowest quality. Produces blocky images, especially when upsampling.

LINEAR

public static final ResamplingMethod LINEAR

Bi-linear interpolation. Better quality than nearest-neighbor, slower. Okay when the target size is not too different from the source size.

CUBIC

public static final ResamplingMethod CUBIC

Bi-cubic interpolation. Better quality than bi-linear, slower. Produces high-quality results in a larger range than that of bi-linear.

LANCZOS4

public static final ResamplingMethod LANCZOS4

Lanczos (Sinc) interpolation over 8x8 neighborhood. Produces very high quality results, but slower than bi-cubic. Retains sharp edges like those of text when downsampling.

AREA

public static final ResamplingMethod AREA

Accurate, produces moire-free results, but tends to produce blurrier images. When upsampling, it is similar to nearest-neighbor.

Method Details

values

public static ResamplingMethod[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static ResamplingMethod valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null