DCMTK Version 3.6.8
OFFIS DICOM Toolkit
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Class to manage GSDF LUTs (for calibration) More...
Public Member Functions | |
DiGSDFunction (const char *filename, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=-1) | |
constructor, read device characteristics file. More... | |
DiGSDFunction (const double *val_tab, const unsigned long count, const Uint16 max=255, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=0) | |
constructor, use given array of luminance/OD values. More... | |
DiGSDFunction (const Uint16 *ddl_tab, const double *val_tab, const unsigned long count, const Uint16 max=255, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=0) | |
constructor, use given array of DDL and luminance/OD values. More... | |
DiGSDFunction (const double val_min, const double val_max, const unsigned long count=256, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=0) | |
constructor, compute luminance/OD values automatically within the specified range. More... | |
virtual | ~DiGSDFunction () |
destructor | |
int | writeCurveData (const char *filename, const OFBool mode=OFTrue) |
write curve data to a text file More... | |
int | setAmbientLightValue (const double value) |
set (reflected) ambient light value. More... | |
int | setIlluminationValue (const double value) |
set illumination value. More... | |
int | setMinDensityValue (const double value) |
set minimum optical density value "Dmin". More... | |
int | setMaxDensityValue (const double value) |
set maximum optical density value "Dmax". More... | |
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DiDisplayFunction (const char *filename, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=-1) | |
constructor, read device characteristics file. More... | |
DiDisplayFunction (const double *val_tab, const unsigned long count, const Uint16 max=255, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=0) | |
constructor, use given array of luminance/OD values. More... | |
DiDisplayFunction (const Uint16 *ddl_tab, const double *val_tab, const unsigned long count, const Uint16 max=255, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=0) | |
constructor, use given array of DDL and luminance/OD values. More... | |
DiDisplayFunction (const double val_min, const double val_max, const unsigned long count=256, const E_DeviceType deviceType=EDT_Monitor, const signed int ord=0) | |
constructor, compute luminance/OD values automatically within the specified range. More... | |
virtual | ~DiDisplayFunction () |
destructor | |
int | isValid () const |
check whether DisplayFunction is valid More... | |
E_DeviceType | getDeviceType () const |
get output device type (monitor, camera, printer or scanner) More... | |
Uint16 | getMaxDDLValue () const |
get maximum DDL value. More... | |
double | getMinValue () const |
get minimum luminance/OD value from the characteristic curve. More... | |
double | getMaxValue () const |
get maximum luminance/OD value from the characteristic curve. More... | |
double | getValueforDDL (const Uint16 ddl) const |
get the luminance/OD value for a given DDL. More... | |
Uint16 | getDDLforValue (const double value) const |
get the DDL for a given luminance/OD value. More... | |
const DiDisplayLUT * | getLookupTable (const int bits, unsigned long count=0) |
create look-up table with specified number of entries More... | |
int | deleteLookupTable (const int bits) |
delete specified LUT More... | |
virtual int | writeCurveData (const char *filename, const OFBool mode=OFTrue)=0 |
write curve data to a text file (abstract method) More... | |
double | getAmbientLightValue () const |
get (reflected) ambient light value. More... | |
virtual int | setAmbientLightValue (const double value) |
set (reflected) ambient light value. More... | |
double | getIlluminationValue () const |
get illumination value. More... | |
virtual int | setIlluminationValue (const double value) |
set illumination value. More... | |
double | getMinDensityValue () const |
get minimum optical density value "Dmin". More... | |
virtual int | setMinDensityValue (const double value) |
set minimum optical density value "Dmin". More... | |
double | getMaxDensityValue () const |
get maximum optical density value "Dmax". More... | |
virtual int | setMaxDensityValue (const double value) |
set maximum optical density value "Dmax". More... | |
double | getMinLuminanceValue () const |
get minimum luminance value "Lmin". More... | |
double | getMaxLuminanceValue () const |
get maximum luminance value "Lmax". More... | |
signed int | getPolynomialOrder () const |
get order of the polynomial curve fitting algorithm. More... | |
double | convertODtoLum (const double value, const OFBool useAmb=OFTrue) const |
convert the given OD value to luminance. More... | |
Static Public Member Functions | |
static double | getJNDIndex (const double lum) |
calculate the JND index for a given luminance value More... | |
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static double | convertODtoLum (const double value, const double ambient, const double illum) |
convert the given OD value to luminance. More... | |
Protected Member Functions | |
DiDisplayLUT * | getDisplayLUT (unsigned long count) |
create GSDF LUT with specified number of entries More... | |
int | calculateGSDF () |
calculate GSDF (array of 1023 luminance/OD values) More... | |
int | calculateGSDFSpline () |
calculate helper function for GSDF interpolation More... | |
int | calculateJNDBoundaries () |
calculate 'JNDMin' and 'JNDMax' for the given luminance/OD range More... | |
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virtual DiDisplayLUT * | getDisplayLUT (unsigned long count)=0 |
create display LUT with specified number of entries (abstract method) More... | |
int | readConfigFile (const char *filename) |
read the given device characteristics file More... | |
int | createSortedTable (const Uint16 *ddl_tab, const double *val_tab) |
create a sorted (by DDL) table from the given DDL and luminance/OD tables More... | |
double * | convertODtoLumTable (const double *od_tab, const unsigned long count, const OFBool useAmb) |
create a table with luminance values from the given OD table. More... | |
int | interpolateValues () |
interpolate device characteristic curve by means of a cubic spline interpolation | |
int | calculateMinMax () |
calculate minimum and maximum luminance/OD values More... | |
int | checkMinMaxDensity () const |
check whether Dmin and Dmax are properly specified. More... | |
Static Private Attributes | |
static const unsigned int | GSDFCount |
constant defining the number JND indexes for the maximum luminance/OD range (1023) | |
Additional Inherited Members | |
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enum | E_DeviceType { EDT_Monitor , EDT_Camera , EDT_Printer , EDT_Scanner } |
output device type More... | |
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int | Valid |
status flag, indicating whether display function is valid | |
const E_DeviceType | DeviceType |
output device type (monitor, camera, printer or scanner) | |
unsigned long | ValueCount |
number of DDL and luminance/OD values | |
Uint16 | MaxDDLValue |
maximum DDL value (usually 255) | |
signed int | Order |
order of the polynomial curve fitting algorithm | |
double | AmbientLight |
(reflected) ambient light value | |
double | Illumination |
illumination value | |
double | MinDensity |
minimum optical density (-1 if unset) | |
double | MaxDensity |
maximum optical density (-1 if unset) | |
Uint16 * | DDLValue |
pointer to array of DDL values | |
double * | LODValue |
pointer to array of corresponding luminance/OD values | |
double | MinValue |
minimum luminance/OD value | |
double | MaxValue |
maximum luminance/OD value | |
DiDisplayLUT * | LookupTable [MAX_NUMBER_OF_TABLES] |
array with pointer to the different lookup tables (here: 8-16 bits) | |
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static const int | MinBits |
constant defining minimum value for number of bits for LUT input (here: 8) | |
static const int | MaxBits |
constant defining maximum value for number of bits for LUT input (here: 16) | |
Class to manage GSDF LUTs (for calibration)
DiGSDFunction::DiGSDFunction | ( | const char * | filename, |
const E_DeviceType | deviceType = EDT_Monitor , |
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const signed int | ord = -1 |
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constructor, read device characteristics file.
Keywords: "max" for maximum DDL (Digital Driving Level, required at first position) "amb" for ambient light and "lum" for illumination (both optional) "ord" for the order of the polynomial curve fitting algorithm used to interpolate the given base points (0 or absent = use cubic spline interpolation)
filename | name of the characteristics file (luminance/OD for each DDL) |
deviceType | type of the output device (default: monitor) |
ord | order of the polynomial curve fitting algorithm used to interpolate the given base points (-1 = use file setting, 0 = cubic spline) |
DiGSDFunction::DiGSDFunction | ( | const double * | val_tab, |
const unsigned long | count, | ||
const Uint16 | max = 255 , |
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const E_DeviceType | deviceType = EDT_Monitor , |
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const signed int | ord = 0 |
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constructor, use given array of luminance/OD values.
UNTESTED Values must be sorted and complete (i.e. there must be an entry for each DDL). The given arrays are copied internally.
val_tab | pointer to array with luminance/OD values |
count | number of array elements (should be equal to 'max + 1') |
max | maximum DDL (digital driving level) |
deviceType | type of the output device (default: monitor) |
ord | order of the polynomial curve fitting algorithm used to interpolate the given base points (0 or negative = use cubic spline interpolation) |
DiGSDFunction::DiGSDFunction | ( | const Uint16 * | ddl_tab, |
const double * | val_tab, | ||
const unsigned long | count, | ||
const Uint16 | max = 255 , |
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const E_DeviceType | deviceType = EDT_Monitor , |
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const signed int | ord = 0 |
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constructor, use given array of DDL and luminance/OD values.
UNTESTED Values will be automatically sorted and missing values will be interpolated. The given arrays are copied internally.
ddl_tab | pointer to array with DDL values (must be with the interval 0..max) |
val_tab | pointer to array with luminance/OD values |
count | number of array elements (2..65536) |
max | maximum DDL (digital driving level) |
deviceType | type of the output device (default: monitor) |
ord | order of the polynomial curve fitting algorithm used to interpolate the given base points (0 or negative = use cubic spline interpolation) |
DiGSDFunction::DiGSDFunction | ( | const double | val_min, |
const double | val_max, | ||
const unsigned long | count = 256 , |
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const E_DeviceType | deviceType = EDT_Monitor , |
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const signed int | ord = 0 |
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constructor, compute luminance/OD values automatically within the specified range.
val_min | minimum luminance/OD value |
val_max | maximum luminance/OD value |
count | number of DDLs (digital driving level, 1..65536)) |
deviceType | type of the output device (default: monitor) |
ord | order of the polynomial curve fitting algorithm used to interpolate the given base points (0 or negative = use cubic spline interpolation) |
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protected |
calculate GSDF (array of 1023 luminance/OD values)
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protected |
calculate helper function for GSDF interpolation
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protected |
calculate 'JNDMin' and 'JNDMax' for the given luminance/OD range
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protectedvirtual |
create GSDF LUT with specified number of entries
count | number of LUT entries |
Implements DiDisplayFunction.
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static |
calculate the JND index for a given luminance value
lum | luminance value |
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virtual |
set (reflected) ambient light value.
measured in cd/m^2. applicable to softcopy and hardcopy devices. typical values: 0.5-5 for softcopy devices, 10 for transmissive hardcopy printer and 0 for reflective hardcopy printers.
value | ambient light value to be set (>= 0) |
Reimplemented from DiDisplayFunction.
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virtual |
set illumination value.
measured in cd/m^2. applicable to hardcopy devices only. typical values: 2000 for transmissive hardcopy printer and 150 for reflective hardcopy printers.
value | illumination value to be set (>= 0) |
Reimplemented from DiDisplayFunction.
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virtual |
set maximum optical density value "Dmax".
measured in optical density (OD). applicable to printers only. typical value: 3.0
value | Dmax value to be set (or < 0 to unset) |
Reimplemented from DiDisplayFunction.
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virtual |
set minimum optical density value "Dmin".
measured in optical density (OD). applicable to printers only. typical value: 0.2
value | Dmin value to be set (or < 0 to unset) |
Reimplemented from DiDisplayFunction.
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virtual |
write curve data to a text file
filename | name of the text file to which the data should be written |
mode | write CC and PSC to file if OFTrue |
Implements DiDisplayFunction.