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# Class Image

Image class provides common methods for working with PDF images.

##### Inheritance

object
Image

##### Implements

IDisposable

##### Inherited Members

object.Equals(object)
object.Equals(object, object)
object.GetHashCode()
object.GetType()
object.MemberwiseClone()
object.ReferenceEquals(object, object)
object.ToString()

###### Namespace: pdftron.PDF

###### Assembly: PDFTronDotNet.dll

##### Syntax

    public class Image : IDisposable

##### Remarks

PDF.Element contains a similar interface used to access image data. To create the Image object from image PDF.Element, pass the Element's SDF/Cos dictionary to Image constructor (i.e. Image image(element->GetXObject()) )

### Constructors

#### Image(Obj)

Create an image from an existing image represented as a SDF/Cos object.

##### Declaration

    public Image(Obj image_xobject)

##### Parameters

Type | Name | Description
--- | --- | ---
Obj | image_xobject | the image_xobject

##### Remarks

To create the Image object from image PDF.Element, pass the Element's SDF/Cos dictionary to Image constructor (i.e. Image image(element->GetXObject()))

### Methods

#### Create(SDFDoc, byte[])

##### Declaration

    public static Image Create(SDFDoc doc, byte[] image_data)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc |
byte[] | image_data |

##### Returns

Type | Description
--- | ---
Image |

#### Create(SDFDoc, byte[], int, int, int, ColorSpace)

Directly embed the image that is already compressed using the Image.InputFilter format. The function can be used to pass-through pre-compressed image data.

##### Declaration

    public static Image Create(SDFDoc doc, byte[] image_data, int width, int height, int bpc, ColorSpace color_space)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
byte[] | image_data | The stream or buffer containing compressed image data. The compression format must match the input_format parameter.
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.
ColorSpace | color_space | The color space in which image samples are specified.

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, byte[], int, int, int, ColorSpace, InputFilter)

Directly embed the image that is already compressed using the Image.InputFilter format. The function can be used to pass-through pre-compressed image data.

##### Declaration

    public static Image Create(SDFDoc doc, byte[] image_data, int width, int height, int bpc, ColorSpace color_space, Image.InputFilter input_format)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
byte[] | image_data | The stream or buffer containing compressed image data. The compression format must match the input_format parameter.
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.
ColorSpace | color_space | The color space in which image samples are specified.
Image.InputFilter | input_format | Image.InputFilter describing the format of pre-compressed image data.

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, byte[], int, int, int, ColorSpace, Obj)

Directly embed the image that is already compressed using the Image.InputFilter format. The function can be used to pass-through pre-compressed image data.

##### Declaration

    public static Image Create(SDFDoc doc, byte[] image_data, int width, int height, int bpc, ColorSpace color_space, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
byte[] | image_data | The stream or buffer containing compressed image data. The compression format must match the input_format parameter.
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.
ColorSpace | color_space | The color space in which image samples are specified.
Obj | encoder_hints | The encoder hints

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, byte[], Obj)

Directly embed the image that is already compressed using the Image.InputFilter format. The function can be used to pass-through pre-compressed image data.

##### Declaration

    public static Image Create(SDFDoc doc, byte[] image_data, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
byte[] | image_data | The stream or buffer containing compressed image data. The compression format must match the input_format parameter.
Obj | encoder_hints | The encoder hints

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, Stream)

##### Declaration

    public static Image Create(SDFDoc doc, Stream stream)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc |
Stream | stream |

##### Returns

Type | Description
--- | ---
Image |

#### Create(SDFDoc, Stream, Obj)

##### Declaration

    public static Image Create(SDFDoc doc, Stream stream, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc |
Stream | stream |
Obj | encoder_hints |

##### Returns

Type | Description
--- | ---
Image |

#### Create(SDFDoc, string)

Create and embed an Image from an external file.

##### Declaration

    public static Image Create(SDFDoc doc, string filename)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. To obtain SDF.Doc from PDFDoc use PDFDoc.GetSDFDoc() or Obj.GetDoc().
string | filename | The name of the image file. Currently supported formats are JPEG, PNG, GIF, TIFF, BMP, EMF, and WMF. Other raster formats can be embedded by decompressing image data and using other versions of Image.Create(...) method.

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Remarks

By default the function will either pass-through data preserving the original compression or will compress data using Flate compression. It is possible to fine tune compression or to select a different compression algorithm using 'encoder_hints' object.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, string, Obj)

Create and embed an Image from an external file taking into account specified compression hints.

##### Declaration

    public static Image Create(SDFDoc doc, string filename, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. To obtain SDF.Doc from PDFDoc use PDFDoc.GetSDFDoc() or Obj.GetDoc().
string | filename | The name of the image file. Currently supported formats are JPEG, PNG, GIF, TIFF, BMP, EMF, and WMF. Other raster formats can be embedded by decompressing image data and using other versions of Image.Create(...) method.
Obj | encoder_hints | An optional SDF.Obj containing a hint (or an SDF.Array of hints) that could be used to select a specific compression method and compression parameters. For a concrete example of how to create encoder hints, please take a look at JBIG2Test and AddImage sample projects. The image encoder accepts the following hints: - /JBIG2; SDF.Name("JBIG2"), An SDF.Name Object with value equal to "JBIG2". If the image is monochrome (i.e. bpc == 1), the encoder will compress the image using JBIG2Decode filter. Note that JBIG2 compression is not recommended for use on scanned text/financial documents or equivalent since its lossless nature can lead to similar looking numbers or characters being replaced.
     <p>- [/JBIG2 /Threshold 0.6 /SharePages 50] - Compress a monochrome image using lossy JBIG2Decode
      compression with the given image threshold and by sharing segments from a specified number
      of pages. The threshold is a floating point number in the rage from 0.4 to 0.9. Increasing the threshold
      value will increase image quality, but may increase the file size. The default value
      for threshold is 0.85. "SharePages" parameter can be used to specify the maximum number of
      pages sharing a common 'JBIG2Globals' segment stream. Increasing the value of this parameter
      improves compression ratio at the expense of memory usage.</p>

     <p>- /CCITT; Compress a monochrome (i.e. bpc == 1) image using CCITT Group 4 compression. This algorithm typically produces
    				larger output than JBIG2, but is lossless. This makes it much more suitable for scanned text documents.
    				CCITT is the best option for more general monochrome compression use cases, since JBIG2 has potential to change image content.</p>

     <p>- [/JPEG] - Use JPEG compression with default compression. </p>
     <p>- [/JPEG /Quality 60] - Use JPEG compression with given quality setting. The "Quality"
    	value is expressed on the 0..100 scale.</p>

     <p>- [/JPEG2000] - Use JPEG2000 compression to compress a RGB or a grayscale image.</p>

     <p>- [/JP2] - Use JPEG2000 compression with JP2 encoding. JP2 does not support CMYK images.</p>

     <p>- [/Flate] - Use Flate compression with maximum compression at the expense of
    	speed. </p>

     <p>- [/Flate /Level 9] - Use Flate compression using specified compression level.
    	Compression "Level" must be a number between 0 and 9: 1 gives best speed,
    	9 gives best compression, 0 gives no compression at all (the input data is simply
    	copied a block at a time). </p>

     <p>- /RAW or [/RAW] - The encoder will not use any compression method and the image
    	will be stored in the raw format.</p>

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Remarks

By default the function will either pass-through data preserving the original compression or will compress data using Flate compression. It is possible to fine tune compression or to select a different compression algorithm using 'encoder_hints' object.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, Filter)

##### Declaration

    public static Image Create(SDFDoc doc, Filter stream)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc |
Filter | stream |

##### Returns

Type | Description
--- | ---
Image |

#### Create(SDFDoc, Filter, Obj)

Directly embed the image that is already compressed using the Image.InputFilter format. The function can be used to pass-through pre-compressed image data.

##### Declaration

    public static Image Create(SDFDoc doc, Filter stream, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
Filter | stream | input stream containing a serialized document. The input stream may be a random-access file, memory buffer, slow HTTP connection etc.
Obj | encoder_hints | The encoder hints

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Remarks

if the input stream doesn't support `Seek()` operation the document will load whole data stream in memory before parsing.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, FilterReader, int, int, int, ColorSpace)

Create and embed an Image. Embed the raw image data taking into account specified compression hints.

By default the function will compress all images using Flate compression. It is possible to fine tune compression or to select a different compression algorithm using 'encoder_hints' object.

##### Declaration

    public static Image Create(SDFDoc doc, FilterReader image_data, int width, int height, int bpc, ColorSpace color_space)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
FilterReader | image_data | The stream or buffer containing image data. The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.
ColorSpace | color_space | The color space in which image samples are represented.

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, FilterReader, int, int, int, ColorSpace, InputFilter)

Create and embed an Image. Embed the raw image data taking into account specified compression hints.

By default the function will compress all images using Flate compression. It is possible to fine tune compression or to select a different compression algorithm using 'encoder_hints' object.

##### Declaration

    public static Image Create(SDFDoc doc, FilterReader image_data, int width, int height, int bpc, ColorSpace color_space, Image.InputFilter input_format)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
FilterReader | image_data | The stream or buffer containing image data. The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.
ColorSpace | color_space | The color space in which image samples are represented.
Image.InputFilter | input_format | Image.InputFilter describing the format of pre-compressed image data.

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Remarks

see the above method for details.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Create(SDFDoc, FilterReader, int, int, int, ColorSpace, Obj)

Create and embed an Image. Embed the raw image data taking into account specified compression hints.

By default the function will compress all images using Flate compression. It is possible to fine tune compression or to select a different compression algorithm using 'encoder_hints' object.

##### Declaration

    public static Image Create(SDFDoc doc, FilterReader image_data, int width, int height, int bpc, ColorSpace color_space, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
FilterReader | image_data | The stream or buffer containing image data. The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.
ColorSpace | color_space | The color space in which image samples are represented.
Obj | encoder_hints | The encoder hints

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded image.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateImageMask(SDFDoc, byte[], int, int)

Create and embed an ImageMask. Embed the raw image data taking into account specified compression hints. The ImageMask can be used as a stencil mask for painting in the current color or as an explicit mask specifying which areas of the image to paint and which to mask out. One of the most important uses of stencil masking is for painting character glyphs represented as bitmaps.

##### Declaration

    public static Image CreateImageMask(SDFDoc doc, byte[] image_data, int width, int height)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
byte[] | image_data | The stream or buffer containing image data stored in 1 bit per sample format. The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded ImageMask.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateImageMask(SDFDoc, byte[], int, int, Obj)

Create and embed an ImageMask. Embed the raw image data taking into account specified compression hints. The ImageMask can be used as a stencil mask for painting in the current color or as an explicit mask specifying which areas of the image to paint and which to mask out. One of the most important uses of stencil masking is for painting character glyphs represented as bitmaps.

##### Declaration

    public static Image CreateImageMask(SDFDoc doc, byte[] image_data, int width, int height, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
byte[] | image_data | The stream or buffer containing image data stored in 1 bit per sample format. The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
Obj | encoder_hints | The encoder hints

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded ImageMask.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateImageMask(SDFDoc, FilterReader, int, int)

Create and embed an ImageMask. Embed the raw image data taking into account specified compression hints. The ImageMask can be used as a stencil mask for painting in the current color or as an explicit mask specifying which areas of the image to paint and which to mask out. One of the most important uses of stencil masking is for painting character glyphs represented as bitmaps.

##### Declaration

    public static Image CreateImageMask(SDFDoc doc, FilterReader image_data, int width, int height)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
FilterReader | image_data | The stream or buffer containing image data stored in 1 bit per sample format. The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded ImageMask.

##### Remarks

see Image.CreateImageMask for details.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateImageMask(SDFDoc, FilterReader, int, int, Obj)

Create and embed an ImageMask. Embed the raw image data taking into account specified compression hints. The ImageMask can be used as a stencil mask for painting in the current color or as an explicit mask specifying which areas of the image to paint and which to mask out. One of the most important uses of stencil masking is for painting character glyphs represented as bitmaps.

##### Declaration

    public static Image CreateImageMask(SDFDoc doc, FilterReader image_data, int width, int height, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
FilterReader | image_data | The stream or buffer containing image data stored in 1 bit per sample format. The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
Obj | encoder_hints | The encoder hints

##### Returns

Type | Description
--- | ---
Image | PDF.Image object representing the embedded ImageMask.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateSoftMask(SDFDoc, byte[], int, int, int)

Create and embed a Soft Mask. Embed the raw image data taking into account specified compression hints.

##### Declaration

    public static Image CreateSoftMask(SDFDoc doc, byte[] image_data, int width, int height, int bpc)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | the doc
byte[] | image_data | the image_data
int | width | the width
int | height | the height
int | bpc | the bpc

##### Returns

Type | Description
--- | ---
Image | the image

##### Remarks

see Image.CreateSoftMask for details.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateSoftMask(SDFDoc, byte[], int, int, int, Obj)

Create and embed a Soft Mask. Embed the raw image data taking into account specified compression hints.

##### Declaration

    public static Image CreateSoftMask(SDFDoc doc, byte[] image_data, int width, int height, int bpc, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
byte[] | image_data | The stream or buffer containing image data represented in DeviceGray color space (i.e. one component per sample). The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.
Obj | encoder_hints | An optional parameter that can be used to fine tune compression or to select a different compression algorithm. See Image.Create() for details.

##### Returns

Type | Description
--- | ---
Image | the image

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateSoftMask(SDFDoc, FilterReader, int, int, int)

Create and embed a Soft Mask. Embed the raw image data taking into account specified compression hints.

##### Declaration

    public static Image CreateSoftMask(SDFDoc doc, FilterReader image_data, int width, int height, int bpc)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | A document to which the image should be added. The 'Doc' object can be obtained using Obj.GetDoc() or PDFDoc.GetSDFDoc().
FilterReader | image_data | The stream or buffer containing image data represented in DeviceGray color space (i.e. one component per sample). The image data must not be compressed and must follow PDF format for sample representation (please refer to section 4.8.2 'Sample Representation' in PDF Reference Manual for details).
int | width | The width of the image, in samples.
int | height | The height of the image, in samples.
int | bpc | The number of bits used to represent each color component.

##### Returns

Type | Description
--- | ---
Image | the image

##### Remarks

this feature is available only in PDF 1.4 and higher.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### CreateSoftMask(SDFDoc, FilterReader, int, int, int, Obj)

Creates the soft mask.

##### Declaration

    public static Image CreateSoftMask(SDFDoc doc, FilterReader image_data, int width, int height, int bpc, Obj encoder_hints)

##### Parameters

Type | Name | Description
--- | --- | ---
SDFDoc | doc | the doc
FilterReader | image_data | the image_data
int | width | the width
int | height | the height
int | bpc | the bpc
Obj | encoder_hints | the encoder_hint

##### Returns

Type | Description
--- | ---
Image | the image

##### Remarks

see Image.CreateSoftMask for details.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

##### Declaration

    public void Dispose()

#### Dispose(bool)

##### Declaration

    protected virtual void Dispose(bool disposing)

##### Parameters

Type | Name | Description
--- | --- | ---
bool | disposing |

#### Export(string)

Saves this image to a file.

The output image format (TIFF, JPEG, or PNG) will be automatically selected based on the properties of the embedded image. For example, if the embedded image is using CCITT Fax compression, the output format will be TIFF. Similarly, if the embedded image is using JPEG compression the output format will be JPEG. If your application needs to explicitly control output image format you may want to use ExportAsTiff() or ExportAsPng().

##### Declaration

    public int Export(string filename)

##### Parameters

Type | Name | Description
--- | --- | ---
string | filename | string that specifies the path name for the saved image. The filename should not include the extension which will be appended to the filename string based on the output format.

##### Returns

Type | Description
--- | ---
int | the number indicating the selected image format: (0 - PNG, 1 - TIF, 2 - JPEG).

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Export(FilterWriter)

Saves this image to the output stream.

##### Declaration

    public int Export(FilterWriter writer)

##### Parameters

Type | Name | Description
--- | --- | ---
FilterWriter | writer | A pointer to FilterWriter used to write to the output stream. If the parameter is null, nothing will be written to the output stream, but the function returns the format identifier.

##### Returns

Type | Description
--- | ---
int | the number indicating the selected image format: (0 - PNG, 1 - TIF, 2 - JPEG).

##### Remarks

see the overloaded Image.Export method for more information.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### ExportAsPng(string)

Saves this image to a PNG file.

##### Declaration

    public void ExportAsPng(string filename)

##### Parameters

Type | Name | Description
--- | --- | ---
string | filename | string that specifies the path name for the saved image. The filename should include the file extension

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### ExportAsPng(FilterWriter)

Saves this image to a PNG output stream.

##### Declaration

    public void ExportAsPng(FilterWriter writer)

##### Parameters

Type | Name | Description
--- | --- | ---
FilterWriter | writer | FilterWriter used to write to the output stream.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### ExportAsTiff(string)

Saves this image to a TIFF file.

##### Declaration

    public void ExportAsTiff(string filename)

##### Parameters

Type | Name | Description
--- | --- | ---
string | filename | string that specifies the path name for the saved image. The filename should include the file extension

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### ExportAsTiff(FilterWriter)

Saves this image to a TIFF output stream.

##### Declaration

    public void ExportAsTiff(FilterWriter writer)

##### Parameters

Type | Name | Description
--- | --- | ---
FilterWriter | writer | FilterWriter used to write to the output stream.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### ~Image()

Releases all resources used by the Image

##### Declaration

    protected ~Image()

#### GetBitsPerComponent()

Gets the bits per component.

##### Declaration

    public int GetBitsPerComponent()

##### Returns

Type | Description
--- | ---
int | the number of bits used to represent each color component. Only a single value may be specified; the number of bits is the same for all color components. Valid values are 1, 2, 4, 8, and 16.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetComponentNum()

Gets the component number.

##### Declaration

    public int GetComponentNum()

##### Returns

Type | Description
--- | ---
int | the number of color components per sample.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetDecodeArray()

Gets the decode array.

##### Declaration

    public Obj GetDecodeArray()

##### Returns

Type | Description
--- | ---
Obj | Decode array or NULL if the paramter is not specified. A decode object is an array of numbers describing how to map image samples into the range of values appropriate for the images color space . If ImageMask is true, the array must be either [0 1] or [1 0]; otherwise, its length must be twice the number of color components required by ColorSpace. Default value depends on the color space, See Table 4.36 in PDF Ref. Manual.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetImageColorSpace()

Gets the image color space.

##### Declaration

    public ColorSpace GetImageColorSpace()

##### Returns

Type | Description
--- | ---
ColorSpace | The SDF object representing the color space in which image samples are specified or NULL if: the image is an image mask or is compressed using JPXDecode with missing ColorSpace entry in image dictionary. The returned color space may be any type of color space except Pattern.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetImageData()

Gets the image data.

##### Declaration

    public Filter GetImageData()

##### Returns

Type | Description
--- | ---
Filter | A stream (filter) containing decoded image data

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetImageDataSize()

Gets the image data size.

##### Declaration

    public int GetImageDataSize()

##### Returns

Type | Description
--- | ---
int | the size of image data in bytes

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetImageHeight()

Gets the image height.

##### Declaration

    public int GetImageHeight()

##### Returns

Type | Description
--- | ---
int | the height of the image, in samples.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetImageRenderingIntent()

Gets the image rendering intent.

##### Declaration

    public GState.RenderingIntent GetImageRenderingIntent()

##### Returns

Type | Description
--- | ---
GState.RenderingIntent | The color rendering intent to be used in rendering the image.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetImageWidth()

Gets the image width.

##### Declaration

    public int GetImageWidth()

##### Returns

Type | Description
--- | ---
int | the width of the image, in samples.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetMask()

Gets the mask.

##### Declaration

    public Obj GetMask()

##### Returns

Type | Description
--- | ---
Obj | an image XObject defining an image mask to be applied to this image (See 'Explicit Masking', 4.8.5), or an array specifying a range of colors to be applied to it as a color key mask (See 'Color Key Masking'). If IsImageMask() return true, this method will return NULL.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### GetSDFObj()

Gets the SDFObj.

##### Declaration

    public Obj GetSDFObj()

##### Returns

Type | Description
--- | ---
Obj | the underlying SDF/Cos object

#### GetSoftMask()

Gets the soft mask.

##### Declaration

    public Obj GetSoftMask()

##### Returns

Type | Description
--- | ---
Obj | an image XObject defining a Soft Mask to be applied to this image (See section 7.5.4 'Soft-Mask Images' in PDF Reference Manual), or NULL if the image does not have the soft mask.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### IsImageInterpolate()

Checks if is image interpolate.

##### Declaration

    public bool IsImageInterpolate()

##### Returns

Type | Description
--- | ---
bool | a boolean indicating whether image interpolation is to be performed.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### IsImageMask()

Checks if is image mask.

##### Declaration

    public bool IsImageMask()

##### Returns

Type | Description
--- | ---
bool | a boolean indicating whether the inline image is to be treated as an image mask.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### IsValid()

Checks if is valid.

##### Declaration

    public bool IsValid()

##### Returns

Type | Description
--- | ---
bool | whether this is a valid raster image. If the function returns false the underlying SDF/Cos object is not a valid raster image and this Image object should be treated as null.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### Set(Image)

Sets value to the given image value

##### Declaration

    public void Set(Image p)

##### Parameters

Type | Name | Description
--- | --- | ---
Image | p | image object

#### SetMask(Image)

Set an Explicit Image Mask.

##### Declaration

    public void SetMask(Image image_mask)

##### Parameters

Type | Name | Description
--- | --- | ---
Image | image_mask | the new mask

##### Remarks

image_mask must be a valid image mask (i.e. image_mask.IsImageMask() must return true.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### SetMask(Obj)

Set a Color Key Mask.

##### Declaration

    public void SetMask(Obj mask)

##### Parameters

Type | Name | Description
--- | --- | ---
Obj | mask | is an Cos/SDF array specifying a range of colors to be masked out. Samples in the image that fall within this range are not painted, allowing the existing background to show through. The effect is similar to that of the video technique known as chroma-key. For details of the array format please refer to section 4.8.5 'Color Key Masking' in PDF Reference Manual.

##### Remarks

the current document takes the ownership of the given SDF object.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### SetSoftMask(Image)

Set a Soft Mask.

##### Declaration

    public void SetSoftMask(Image soft_mask)

##### Parameters

Type | Name | Description
--- | --- | ---
Image | soft_mask | is a subsidiary Image object defining a soft-mask image (See section 7.5.4 'Soft-Mask Images' in PDF Reference Manual) to be used as a source of mask shape or mask opacity values in the transparent imaging model. The alpha source parameter in the graphics state determines whether the mask values are interpreted as shape or opacity.

##### Exceptions

Type | Condition
--- | ---
PDFNetException | PDFNetException the PDFNet exception

#### op_Assign(Image)

Assignment operator

##### Declaration

    public Image op_Assign(Image r)

##### Parameters

Type | Name | Description
--- | --- | ---
Image | r | an given `Image` object

##### Returns

Type | Description
--- | ---
Image | an `Image` object that equals to the given object

### Implements

IDisposable