kcenon::pacs::encoding::compression::compression_options Struct Reference

Compression quality settings for lossy codecs. More...

#include <compression_codec.h>

Collaboration diagram for kcenon::pacs::encoding::compression::compression_options:

Public Attributes
int	quality {75}
	Quality setting (1-100 for JPEG)
bool	lossless {false}
	Enable lossless mode if supported by codec.
bool	progressive {false}
	Enable progressive encoding (JPEG only)
int	chroma_subsampling {2}
	Chroma subsampling for color images 0 = 4:4:4 (no subsampling) 1 = 4:2:2 (horizontal subsampling) 2 = 4:2:0 (horizontal and vertical subsampling, default for JPEG)

Detailed Description

Compression quality settings for lossy codecs.

Quality is codec-specific:

• JPEG: 1-100, higher is better quality (larger file)
• JPEG 2000: Compression ratio or rate-distortion metric

Definition at line 34 of file compression_codec.h.

Member Data Documentation

chroma_subsampling

int kcenon::pacs::encoding::compression::compression_options::chroma_subsampling {2}

Chroma subsampling for color images 0 = 4:4:4 (no subsampling) 1 = 4:2:2 (horizontal subsampling) 2 = 4:2:0 (horizontal and vertical subsampling, default for JPEG)

Definition at line 48 of file compression_codec.h.

{2};

lossless

bool kcenon::pacs::encoding::compression::compression_options::lossless {false}

Enable lossless mode if supported by codec.

Definition at line 39 of file compression_codec.h.

{false};

progressive

bool kcenon::pacs::encoding::compression::compression_options::progressive {false}

Enable progressive encoding (JPEG only)

Definition at line 42 of file compression_codec.h.

{false};

quality

int kcenon::pacs::encoding::compression::compression_options::quality {75}

Quality setting (1-100 for JPEG)

Definition at line 36 of file compression_codec.h.

{75};

Referenced by kcenon::pacs::web::dicomweb::render_dicom_image().

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

• include/kcenon/pacs/encoding/compression/compression_codec.h