OpenJPH
Open-source implementation of JPEG2000 Part-15
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ojph::local::visual_weights Class Reference

Public Types

enum  colour_format : ui32 {
  VW_COLOUR_FORMAT_400 = 0 , VW_COLOUR_FORMAT_420 = 1 , VW_COLOUR_FORMAT_422 = 2 , VW_COLOUR_FORMAT_444 = 3 ,
  VW_COLOUR_FORMAT_ERROR = 4
}
using comp_type = param_qcd::comp_type

Static Public Member Functions

static colour_format get_format (const point &component_subsampling)
static const float * get_weights (ui32 format, ui32 comp_typecomp_type)
static const float * get_no_weights ()
static float get_weight (const float *v, ui32 decomposition_level, ui32 subband_idx)
static float get_gain (ui32 comp_typecomp_type)
static float get_delta_ref (float qfactor, ui32 bit_depth, float &power)

Static Private Attributes

static const float cb420 [19]
static const float cr420 [19]
static const float cb422 [19]
static const float cr422 [19]
static const float cb444 [19]
static const float cr444 [19]
static const float y [19]
static const float no_weights [19]

Detailed Description

Definition at line 616 of file ojph_params.cpp.

Member Typedef Documentation

◆ comp_type

using ojph::local::visual_weights::comp_type = param_qcd::comp_type

Definition at line 627 of file ojph_params.cpp.

Member Enumeration Documentation

◆ colour_format

enum ojph::local::visual_weights::colour_format : ui32
Enumerator
VW_COLOUR_FORMAT_400 
VW_COLOUR_FORMAT_420 
VW_COLOUR_FORMAT_422 
VW_COLOUR_FORMAT_444 
VW_COLOUR_FORMAT_ERROR 

Definition at line 619 of file ojph_params.cpp.

Member Function Documentation

◆ get_delta_ref()

float ojph::local::visual_weights::get_delta_ref ( float qfactor,
ui32 bit_depth,
float & power )
inlinestatic

Definition at line 707 of file ojph_params.cpp.

Referenced by ojph::local::param_qcd::set_irrev_quant().

◆ get_format()

colour_format ojph::local::visual_weights::get_format ( const point & component_subsampling)
inlinestatic

Definition at line 630 of file ojph_params.cpp.

References VW_COLOUR_FORMAT_420, VW_COLOUR_FORMAT_422, VW_COLOUR_FORMAT_444, VW_COLOUR_FORMAT_ERROR, ojph::point::x, and ojph::point::y.

Referenced by ojph::local::param_qcd::set_irrev_quant().

◆ get_gain()

float ojph::local::visual_weights::get_gain ( ui32 comp_type)
inlinestatic

Definition at line 692 of file ojph_params.cpp.

Referenced by ojph::local::param_qcd::set_irrev_quant().

◆ get_no_weights()

const float * ojph::local::visual_weights::get_no_weights ( )
inlinestatic

Definition at line 673 of file ojph_params.cpp.

References no_weights.

Referenced by ojph::local::param_qcd::set_irrev_quant().

◆ get_weight()

float ojph::local::visual_weights::get_weight ( const float * v,
ui32 decomposition_level,
ui32 subband_idx )
inlinestatic

Definition at line 676 of file ojph_params.cpp.

References ojph_min.

Referenced by ojph::local::param_qcd::set_irrev_quant().

◆ get_weights()

const float * ojph::local::visual_weights::get_weights ( ui32 format,
ui32 comp_type )
inlinestatic

Definition at line 643 of file ojph_params.cpp.

References cb420, cb422, cb444, cr420, cr422, cr444, VW_COLOUR_FORMAT_420, VW_COLOUR_FORMAT_422, VW_COLOUR_FORMAT_444, and y.

Referenced by ojph::local::param_qcd::set_irrev_quant().

Member Data Documentation

◆ cb420

const float ojph::local::visual_weights::cb420
staticprivate
Initial value:
= {
0.2724f, 0.5128f, 0.5128f,
0.6692f, 0.9382f, 0.9382f,
1.0888f, 1.3046f, 1.3046f,
1.4156f, 1.5594f, 1.5594f,
2.0f, 2.0f, 2.0f,
2.0f, 2.0f, 2.0f, 2.0f}

Definition at line 745 of file ojph_params.cpp.

Referenced by get_weights().

◆ cb422

const float ojph::local::visual_weights::cb422
staticprivate
Initial value:
= {
0.1220f, 0.1220f, 0.3626f,
0.3626f, 0.3626f, 0.6634f,
0.6634f, 0.6634f, 0.9225f,
0.9225f, 0.9225f, 1.1027f,
1.1027f, 1.1027f, 1.4142f,
1.4142f, 1.4142f, 1.4142f, 1.4142f}

Definition at line 747 of file ojph_params.cpp.

Referenced by get_weights().

◆ cb444

const float ojph::local::visual_weights::cb444
staticprivate
Initial value:
= {
0.0263f, 0.0863f, 0.0863f,
0.1362f, 0.2564f, 0.2564f,
0.3346f, 0.4691f, 0.4691f,
0.5444f, 0.6523f, 0.6523f,
0.7078f, 0.7797f, 0.7797f,
1.0f, 1.0f, 1.0f, 1.0f}

Definition at line 749 of file ojph_params.cpp.

Referenced by get_weights().

◆ cr420

const float ojph::local::visual_weights::cr420
staticprivate
Initial value:
= {
0.5196f, 0.8260f, 0.8260f,
1.0080f, 1.2928f, 1.2928f,
1.4440f, 1.6508f, 1.6508f,
1.7538f, 1.8848f, 1.8848f,
2.0f, 2.0f, 2.0f,
2.0f, 2.0f, 2.0f, 2.0f}

Definition at line 746 of file ojph_params.cpp.

Referenced by get_weights().

◆ cr422

const float ojph::local::visual_weights::cr422
staticprivate
Initial value:
= {
0.2595f, 0.2595f, 0.5841f,
0.5841f, 0.5841f, 0.9141f,
0.9141f, 0.9141f, 1.1673f,
1.1673f, 1.1673f, 1.3328f,
1.3328f, 1.3328f, 1.4142f,
1.4142f, 1.4142f, 1.4142f, 1.4142f}

Definition at line 748 of file ojph_params.cpp.

Referenced by get_weights().

◆ cr444

const float ojph::local::visual_weights::cr444
staticprivate
Initial value:
= {
0.0773f, 0.1835f, 0.1835f,
0.2598f, 0.4130f, 0.4130f,
0.5040f, 0.6464f, 0.6464f,
0.7220f, 0.8254f, 0.8254f,
0.8769f, 0.9424f, 0.9424f,
1.0f, 1.0f, 1.0f, 1.0f}

Definition at line 750 of file ojph_params.cpp.

Referenced by get_weights().

◆ no_weights

const float ojph::local::visual_weights::no_weights
staticprivate
Initial value:
= {
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f}

Definition at line 752 of file ojph_params.cpp.

Referenced by get_no_weights().

◆ y

const float ojph::local::visual_weights::y
staticprivate
Initial value:
= {
0.0901f, 0.2758f, 0.2758f,
0.7018f, 0.8378f, 0.8378f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f, 1.0f}

Definition at line 751 of file ojph_params.cpp.

Referenced by get_weights().

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