PDFPictureCompressionParams Object (IPDFPictureCompressionParams Interface)

Application

Engine, read-only

Returns the Engine object.

BwPictureFormats

int

Specifies the image format to be used when saving a PDF (PDF/A) file with embedded black-and-white pictures. The value of this property is an OR superposition of the BwPictureFormatsEnum enumeration constants.

Some constraints are imposed on the value of this property:

• The value of this property is ignored, if the IPDFExportParams::TextExportMode property is set to PEM_TextOnly.
• If the PDF file version (IPDFExportFeatures::PDFVersion) is 1.3, this property can only be set to BWPF_Auto or BWPF_CCITT4.

The default value for this property is BWPF_Auto.

BwPictureResolutionParams

PictureResolutionParams, read-only

Specifies the resolution of writing black-and-white images to output files.

The property is only usable when the IPDFExportParams::MRCMode property is set to MRC_Disable; otherwise, the value of this property is ignored.

ColorPictureFormats

int

Specifies the image format to be used when saving a PDF (PDF/A) file with embedded color pictures. The value of this property is an OR superposition of the ColorPictureFormatsEnum enumeration constants.

Some constraints are imposed on the value of this property:

• The value of this property is ignored, if the IPDFExportParams::TextExportMode property is set to PEM_TextOnly.
• The property cannot be set to CPF_Png.
• The property can be set to CPF_LZW, only if the IPDFExportParams::PDFAComplianceMode is set to PCM_None.
• The property cannot be set to CPF_J2K, if the IPDFExportParams::PDFAComplianceMode is set to PCM_Pdfa_1b or PCM_Pdfa_1a.
• This property can be set to CPF_J2K, only if PDF version (IPDFExportFeatures::PDFVersion) is 1.5 or higher.

The default value for this property is CPF_Auto, which means that the format is defined automatically.

ColorPictureResolutionParams

PictureResolutionParams, read-only

Specifies the resolution of writing color images to output files.

The property is only usable when the IPDFExportParams::MRCMode property is set to MRC_Disable; otherwise, the value of this property is ignored.

EnableInterpolationMode

ThreeStatePropertyValueEnum

This property specifies if the output PDF document supports image interpolation in PDF viewers. You cannot set this property to TSPV_Yes if the IPDFExportParams::PDFAComplianceMode is set to any of the constants except PCM_None, because PDF/A formats require that the interpolation is turned off.

The default value of this property is TSPV_Auto, which means that the interpolation will be turned off for PDF/A-compliant formats and on otherwise.

EnableSharpenFilter

VARIANT_BOOL

This property specifies whether the image must be additionally sharpened. We recommend using it if you are exporting to image-only or image over text format to make the text look clearer while decreasing the image resolution and the file size.

This property is FALSE by default.

GrayPictureFormats

int

Specifies the image format to be used when saving a PDF (PDF/A) file with embedded gray pictures. The value of this property is an OR superposition of the GrayPictureFormatsEnum enumeration constants.

Some constraints are imposed on the value of this property:

• The value of this property is ignored, if the IPDFExportParams::TextExportMode property is set to PEM_TextOnly.
• The property cannot be set to GPF_Png.
• The property can be set to GPF_LZW, only if the IPDFExportParams::PDFAComplianceMode is set to PCM_None.
• The property cannot be set to GPF_J2K, if the IPDFExportParams::PDFAComplianceMode is set to PCM_Pdfa_1b or PCM_Pdfa_1a.

• This property can be set to GPF_J2K, only if PDF version (IPDFExportFeatures::PDFVersion) is 1.5 or higher.

The default value for this property is GPF_Auto, which means that the format is defined automatically.

GrayPictureResolutionParams

PictureResolutionParams, read-only

Specifies the resolution of writing gray images to output files.

The property is only usable when the IPDFExportParams::MRCMode property is set to MRC_Disable; otherwise, the value of this property is ignored.

JpegQuality

int

Stores the value of the JPEG quality for pictures saved in PDF (PDF/A) format in percent. This value is used with JBIG2, color and gray JPEG, color and gray JPEG 2000 image formats.

The default value of this property is 45%.

MRCParams

PDFMRCParams, read-only

Specifies Mixed Raster Content parameters of the PDF (PDF/A) file.

The property is only usable when the IPDFExportParams::TextExportMode property is set to PEM_ImageOnText or PEM_ImageOnly and IPDFExportParams::MRCMode property is set to MRC_Auto or MRC_Always, otherwise the value of this property is ignored.