Image::ImageResampler Class Reference

Image resampler for DPI-change operations, including upsampling and downsampling. More...

#include <Image.h>

Collaboration diagram for Image::ImageResampler:

Public Member Functions
	ImageResampler (ImageDpi targetDpi)
	Constructs an image resampler for a target DPI.
virtual std::shared_ptr< Image >	Resample (const inno::Image &image) const =0
	Resample image to a target DPI.

Protected Member Functions
ImageDpi	GetDpi () const
	Retrieves target DPI of the resampler.

Detailed Description

Image resampler for DPI-change operations, including upsampling and downsampling.

Constructor & Destructor Documentation

ImageResampler()

ImageResampler ( ImageDpi targetDpi )

inlineexplicit

Constructs an image resampler for a target DPI.

This constructor initializes the image resampler to resample an image to the specified DPI.

Parameters

targetDpi

The DPI (dots per inch) of the new image.

Exceptions

EnrollmentInvalidArgumentException

when targetDpi is 0

Referenced by Image::AreaImageResampler::AreaImageResampler(), Image::BicubicImageResampler::BicubicImageResampler(), Image::NISTImageResampler::NISTImageResampler(), Image::NISTImageResampler::NISTImageResampler(), and Resample().

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Member Function Documentation

GetDpi()

ImageDpi GetDpi ( ) const

inlinenodiscardprotected

Retrieves target DPI of the resampler.

Returns

The target DPI (dots per inch) of the resampler

Referenced by Image::AreaImageResampler::Resample(), Image::BicubicImageResampler::Resample(), and Image::NISTImageResampler::Resample().

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Resample()

virtual std::shared_ptr< Image > Resample ( const inno::Image & image ) const

nodiscardpure virtual

Resample image to a target DPI.

It creates new image as result of resampling with factor target DPI/original DPI.

Parameters

image

Image to resize.

Returns

image with given DPI

Implemented in Image::AreaImageResampler, Image::BicubicImageResampler, and Image::NISTImageResampler.

References ImageResampler().

Referenced by Image::ChangeDpiTo().

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The documentation for this class was generated from the following file:

• Image/Image.h