The image_pgm class provides methods to read and write PGM images with various bit depths. More...

#include <image_pgm.hpp>

Inheritance diagram for image_pgm:

Collaboration diagram for image_pgm:

Static Public Member Functions
static uint8_t	lire_image_pgm_and_get_maxgrey (char nom_image[], uint8_t *pt_image, int taille_image)
	Reads a PGM image with 8-bit depth and returns the maximum grey value.

static void	ecrire_image_pgm_variable_size (char nom_image[], uint8_t *pt_image, int nb_lignes, int nb_colonnes, uint8_t max_value)
	Writes a PGM image with variable size.

static uint16_t	lire_image_pgm_and_get_maxgrey (char nom_image[], uint16_t *pt_image, int taille_image)
	Reads a PGM image with 16-bit depth and returns the maximum grey value.

static void	ecrire_image_pgm_variable_size (char nom_image[], uint16_t *pt_image, int nb_lignes, int nb_colonnes, uint16_t max_value)
	Writes a PGM image with variable size and 16-bit depth.

static void	write_image_pgm_compressed_variable_size (char nom_image[], uint16_t *pt_image, int nb_lignes, int nb_colonnes, uint16_t max_value, int imgSize, int nHOriginal, int nWOriginal)
	Writes a compressed PGM image with variable size and 16-bit depth.

static pair< int, int >	read_image_pgm_compressed_and_get_originalDimension (char nom_image[], uint16_t *pt_image)
	Reads a compressed PGM image with 16-bit depth and returns the original dimensions.

static uint32_t	lire_image_pgm_and_get_maxgrey (char nom_image[], uint32_t *pt_image, int taille_image)
	Reads a PGM image with 32-bit depth and returns the maximum grey value.

static void	ecrire_image_pgm_variable_size (char nom_image[], uint32_t *pt_image, int nb_lignes, int nb_colonnes, uint32_t max_value)
	Writes a PGM image with variable size and 32-bit depth.

static uint64_t	lire_image_pgm_and_get_maxgrey (char nom_image[], uint64_t *pt_image, int taille_image)
	Reads a PGM image with 64-bit depth and returns the maximum grey value.

static void	ecrire_image_pgm_variable_size (char nom_image[], uint64_t *pt_image, int nb_lignes, int nb_colonnes, uint64_t max_value)
	Writes a PGM image with variable size and 64-bit depth.

static void	lire_image_pgm_variable_size (char nom_image[], uint64_t *pt_image, int taille_image)
	Reads a PGM image with variable size and 64-bit depth.

static void	lire_nb_lignes_colonnes_image_p (char nom_image[], int nb_lignes, int nb_colonnes)
	Reads the number of lines and columns of a PGM image.

static void	lire_image_p (char nom_image[], OCTET *pt_image, int taille_image)
	Reads a PGM image with variable size and stores it in an OCTET array.

static void	ecrire_image_p (char nom_image[], OCTET *pt_image, int nb_lignes, int nb_colonnes)
	Writes a PGM image from an OCTET array with given dimensions.

Additional Inherited Members
Static Protected Member Functions inherited from image_portable
static void	ignorer_commentaires (FILE *f)
	A base class for different image formats.

Detailed Description

The image_pgm class provides methods to read and write PGM images with various bit depths.

Author: Katia Auxilien

Date: May 2024

Member Function Documentation

◆ ecrire_image_p()

void image_pgm::ecrire_image_p	(	char	nom_image[],
		OCTET *	pt_image,
		int	nb_lignes,
		int	nb_colonnes )

static

Writes a PGM image from an OCTET array with given dimensions.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the OCTET array.
nb_lignes	The number of lines in the image.
nb_colonnes	The number of columns in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ ecrire_image_pgm_variable_size() [1/4]

void image_pgm::ecrire_image_pgm_variable_size	(	char	nom_image[],
		uint16_t *	pt_image,
		int	nb_lignes,
		int	nb_colonnes,
		uint16_t	max_value )

static

Writes a PGM image with variable size and 16-bit depth.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
nb_lignes	The number of lines in the image.
nb_colonnes	The number of columns in the image.
max_value	The maximum value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ ecrire_image_pgm_variable_size() [2/4]

void image_pgm::ecrire_image_pgm_variable_size	(	char	nom_image[],
		uint32_t *	pt_image,
		int	nb_lignes,
		int	nb_colonnes,
		uint32_t	max_value )

static

Writes a PGM image with variable size and 32-bit depth.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
nb_lignes	The number of lines in the image.
nb_colonnes	The number of columns in the image.
max_value	The maximum value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ ecrire_image_pgm_variable_size() [3/4]

void image_pgm::ecrire_image_pgm_variable_size	(	char	nom_image[],
		uint64_t *	pt_image,
		int	nb_lignes,
		int	nb_colonnes,
		uint64_t	max_value )

static

Writes a PGM image with variable size and 64-bit depth.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
nb_lignes	The number of lines in the image.
nb_colonnes	The number of columns in the image.
max_value	The maximum value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ ecrire_image_pgm_variable_size() [4/4]

void image_pgm::ecrire_image_pgm_variable_size	(	char	nom_image[],
		uint8_t *	pt_image,
		int	nb_lignes,
		int	nb_colonnes,
		uint8_t	max_value )

static

Writes a PGM image with variable size.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
nb_lignes	The number of lines in the image.
nb_colonnes	The number of columns in the image.
max_value	The maximum value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ lire_image_p()

void image_pgm::lire_image_p	(	char	nom_image[],
		OCTET *	pt_image,
		int	taille_image )

static

Reads a PGM image with variable size and stores it in an OCTET array.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the OCTET array.
taille_image	The size of the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ lire_image_pgm_and_get_maxgrey() [1/4]

uint16_t image_pgm::lire_image_pgm_and_get_maxgrey	(	char	nom_image[],
		uint16_t *	pt_image,
		int	taille_image )

static

Reads a PGM image with 16-bit depth and returns the maximum grey value.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
taille_image	The size of the image.

Returns: The maximum grey value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ lire_image_pgm_and_get_maxgrey() [2/4]

uint32_t image_pgm::lire_image_pgm_and_get_maxgrey	(	char	nom_image[],
		uint32_t *	pt_image,
		int	taille_image )

static

Reads a PGM image with 32-bit depth and returns the maximum grey value.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
taille_image	The size of the image.

Returns: The maximum grey value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ lire_image_pgm_and_get_maxgrey() [3/4]

uint64_t image_pgm::lire_image_pgm_and_get_maxgrey	(	char	nom_image[],
		uint64_t *	pt_image,
		int	taille_image )

static

Reads a PGM image with 64-bit depth and returns the maximum grey value.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
taille_image	The size of the image.

Returns: The maximum grey value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ lire_image_pgm_and_get_maxgrey() [4/4]

uint8_t image_pgm::lire_image_pgm_and_get_maxgrey	(	char	nom_image[],
		uint8_t *	pt_image,
		int	taille_image )

static

Reads a PGM image with 8-bit depth and returns the maximum grey value.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
taille_image	The size of the image.

Returns: The maximum grey value in the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ lire_image_pgm_variable_size()

void image_pgm::lire_image_pgm_variable_size	(	char	nom_image[],
		uint64_t *	pt_image,
		int	taille_image )

static

Reads a PGM image with variable size and 64-bit depth.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
taille_image	The size of the image.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ lire_nb_lignes_colonnes_image_p()

void image_pgm::lire_nb_lignes_colonnes_image_p	(	char	nom_image[],
		int *	nb_lignes,
		int *	nb_colonnes )

static

Reads the number of lines and columns of a PGM image.

Parameters

nom_image	The name of the image file.
nb_lignes	The pointer to store the number of lines.
nb_colonnes	The pointer to store the number of columns.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ read_image_pgm_compressed_and_get_originalDimension()

pair< int, int > image_pgm::read_image_pgm_compressed_and_get_originalDimension	(	char	nom_image[],
		uint16_t *	pt_image )

static

Reads a compressed PGM image with 16-bit depth and returns the original dimensions.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.

Returns: A pair containing the original number of lines and columns.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

◆ write_image_pgm_compressed_variable_size()

void image_pgm::write_image_pgm_compressed_variable_size	(	char	nom_image[],
		uint16_t *	pt_image,
		int	nb_lignes,
		int	nb_colonnes,
		uint16_t	max_value,
		int	imgSize,
		int	nHOriginal,
		int	nWOriginal )

static

Writes a compressed PGM image with variable size and 16-bit depth.

Parameters

nom_image	The name of the image file.
pt_image	The pointer to the image data.
nb_lignes	The number of lines in the image.
nb_colonnes	The number of columns in the image.
max_value	The maximum value in the image.
imgSize	The size of the image.
nHOriginal	The original number of lines.
nWOriginal	The original number of columns.

Authors: Katia Auxilien, William Puech

Date: May 2024, Tue Mar 31 13:26:36 2005

Static Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ ecrire_image_p()

◆ ecrire_image_pgm_variable_size() [1/4]

◆ ecrire_image_pgm_variable_size() [2/4]

◆ ecrire_image_pgm_variable_size() [3/4]

◆ ecrire_image_pgm_variable_size() [4/4]

◆ lire_image_p()

◆ lire_image_pgm_and_get_maxgrey() [1/4]

◆ lire_image_pgm_and_get_maxgrey() [2/4]

◆ lire_image_pgm_and_get_maxgrey() [3/4]

◆ lire_image_pgm_and_get_maxgrey() [4/4]

◆ lire_image_pgm_variable_size()

◆ lire_nb_lignes_colonnes_image_p()

◆ read_image_pgm_compressed_and_get_originalDimension()

◆ write_image_pgm_compressed_variable_size()