Image parameter correction for picked-up image and simulated image

An imaging apparatus for performing predetermined image signal processing on an image signal picked up by an image pickup device in order to convert the image signal for recording and display purposes, said imaging apparatus comprising:

• a parameter storage section configured to store output correction parameters used to output the picked-up image signal to the outside, and simulation correction parameters used in simulation mode subsequent to imaging;
• a parameter setting section configured to select said simulation correction parameters if said simulation mode is set based on an externally designated input, and to select said output correction parameters if said simulation mode is canceled, the selected parameters being retrieved from said parameter storage section, said parameter setting section further changing the parameters for gamma correction between said simulation mode and non-simulation mode;
• a gamma correction processing section configured to perform gamma correction processing on the input image signal based on either said output correction parameters or said simulation correction parameters set by said parameter setting section;
• and
• a display-ready signal conversion section configured to convert into a display-ready signal said image signal having undergone the gamma correction based on said simulation correction parameters when said simulation mode is set;
• wherein said simulation correction parameters are associated with identification information for identifying said simulation correction parameters;
• and
• wherein said image data recording section attaches to said image signal said identification information for identifying said simulation correction parameters in place of said simulation correction parameters.

An imaging apparatus for performing predetermined image signal processing on an image signal picked up by an image pickup device in order to convert the image signal for recording and display purposes, said imaging apparatus comprising:

• a parameter storage section configured to store output correction parameters used to output the picked-up image signal to the outside, and simulation correction parameters used in simulation mode subsequent to imaging;
• a parameter setting section configured to select said simulation correction parameters if said simulation mode is set based on an externally designated input, and to select said output correction parameters if said simulation mode is canceled, the selected parameters being retrieved from said parameter storage section, said parameter setting section further changing the parameters for gamma correction between said simulation mode and non-simulation mode;
• a gamma correction processing section configured to perform gamma correction processing on the input image signal based on either said output correction parameters or said simulation correction parameters set by said parameter setting section;
• and
• a display-ready signal conversion section configured to convert into a display-ready signal said image signal having undergone the gamma correction based on said simulation correction parameters when said simulation mode is set;
• wherein said simulation correction parameters include coefficients of a plurality of correction functions for changing characteristics of a gamma curve used by said gamma correction processing section, as well as an order in which to perform operations using said plurality of correction functions;
• and
• wherein said gamma correction processing section composes said plurality of correction functions defined by said simulation correction parameters and carries out gamma correction processing based on the composed correction functions.

An imaging method for performing predetermined image signal processing on an image signal picked up by an image pickup device in order to convert the image signal for recording and display purposes, said imaging method comprising the steps of:

• storing into a parameter storage section output correction parameters used to correct an image signal's dynamic range and output the picked-up image signal to the outside, and simulation correction parameters used in a simulation mode to correct image toning of a simulated post-production processed version of said image signal, wherein post-production processing comprises editing picked up image signals;
• selecting said simulation correction parameters if said simulation mode is set or said output correction parameters if said simulation mode is canceled, the selected parameters being read from said parameter storage section;
• changing the parameters for gamma correction between said simulation mode and a non-simulation mode;
• performing gamma correction processing on an input image signal based on either said selected output correction parameters or said selected simulation correction parameters;
• converting into a display-ready signal said image signal having undergone the gamma correction based on said simulation correction parameters when said simulation mode is set, thereby providing a simulated gamma-corrected post-production processed image signal ready for post-production processing;
• and
• storing as metadata the simulation correction parameters used for gamma correction processing on the image signal input thereto for subsequent use of said metadata in post-production processing of the image signal picked up by said image pickup device.

A computer-readable storage medium storing an image signal processing program for causing a computer to perform predetermined image signal processing on an image signal picked up by an image pickup device for correction purposes, said image signal processing program comprising the steps of:

• storing into a parameter storage section output correction parameters used to correct an image signal's dynamic range and output the picked-up image signal to the outside, and simulation correction parameters used in a simulation mode to correct image toning of a simulated post-production processed version of said image signal, wherein post-production processing comprises editing picked up image signals;
• selecting said simulation correction parameters if said simulation mode is set or said output correction parameters if said simulation mode is canceled, the selected parameters being retrieved from said parameter storage section;
• changing the parameters for gamma correction between said simulation mode and non-simulation mode;
• performing gamma correction processing on an input image signal based on either said selected output correction parameters or said selected simulation correction parameters;
• converting into a display-ready signal said image signal having undergone the gamma correction based on said simulation correction parameters when said simulation mode is set, thereby providing a simulated gamma-corrected post-production processed image signal ready for post-production processing;
• and
• storing as metadata the simulation correction parameters used for gamma correction processing on the image signal input thereto for subsequent use of said metadata in post-production processing of the image signal picked up by said image pickup device.

An imaging apparatus for performing predetermined image signal processing on an image signal picked up by an image pickup device in order to convert the image signal for recording and display purposes, said imaging apparatus comprising:

• parameter storage means for storing output correction parameters used to correct an image signal's dynamic range and output the picked-up image signal to the outside, and simulation correction parameters used in a simulation mode to correct image toning of a simulated post-production processed version of said image signal, wherein post-production processing comprises editing picked up image signals;
• parameter setting means for selecting said simulation correction parameters if said simulation mode is set, and to select said output correction parameters if said simulation mode is canceled, the selected parameters being retrieved from said parameter storage means, said parameter setting means further changing the parameters for gamma correction between said simulation mode and a non-simulation mode;
• gamma correction processing means for performing gamma correction processing on an image signal input thereto based on either said output correction parameters or said simulation correction parameters selected by said parameter setting means;
• display-ready signal conversion means for converting into a display-ready signal said image signal having undergone the gamma correction based on said simulation correction parameters when said simulation mode is set, thereby providing a simulated gamma-corrected post-production processed image signal ready for post-production processing;
• and
• metadata storage means for storing as metadata the simulation correction parameters used for gamma correction processing on the image signal input thereto for subsequent use of said metadata in post-production processing of the image signal picked up by said image pickup device.