imgcodecs.hpp File Reference

#include "opencv2/core.hpp"

Classes
class	cv::ImageCollection
	To read Multi Page images on demand. More...
struct	cv::ImageCollection::iterator

Namespaces
	cv
	"black box" representation of the file storage associated with a file on disk.

Enumerations
enum	cv::ImreadModes {   cv::IMREAD_UNCHANGED = -1,   cv::IMREAD_GRAYSCALE = 0,   cv::IMREAD_COLOR = 1,   cv::IMREAD_ANYDEPTH = 2,   cv::IMREAD_ANYCOLOR = 4,   cv::IMREAD_LOAD_GDAL = 8,   cv::IMREAD_REDUCED_GRAYSCALE_2 = 16,   cv::IMREAD_REDUCED_COLOR_2 = 17,   cv::IMREAD_REDUCED_GRAYSCALE_4 = 32,   cv::IMREAD_REDUCED_COLOR_4 = 33,   cv::IMREAD_REDUCED_GRAYSCALE_8 = 64,   cv::IMREAD_REDUCED_COLOR_8 = 65,   cv::IMREAD_IGNORE_ORIENTATION = 128 }
	Imread flags. More...
enum	cv::ImwriteEXRCompressionFlags {   cv::IMWRITE_EXR_COMPRESSION_NO = 0,   cv::IMWRITE_EXR_COMPRESSION_RLE = 1,   cv::IMWRITE_EXR_COMPRESSION_ZIPS = 2,   cv::IMWRITE_EXR_COMPRESSION_ZIP = 3,   cv::IMWRITE_EXR_COMPRESSION_PIZ = 4,   cv::IMWRITE_EXR_COMPRESSION_PXR24 = 5,   cv::IMWRITE_EXR_COMPRESSION_B44 = 6,   cv::IMWRITE_EXR_COMPRESSION_B44A = 7,   cv::IMWRITE_EXR_COMPRESSION_DWAA = 8,   cv::IMWRITE_EXR_COMPRESSION_DWAB = 9 }
enum	cv::ImwriteEXRTypeFlags {   cv::IMWRITE_EXR_TYPE_HALF = 1,   cv::IMWRITE_EXR_TYPE_FLOAT = 2 }
enum	cv::ImwriteFlags {   cv::IMWRITE_JPEG_QUALITY = 1,   cv::IMWRITE_JPEG_PROGRESSIVE = 2,   cv::IMWRITE_JPEG_OPTIMIZE = 3,   cv::IMWRITE_JPEG_RST_INTERVAL = 4,   cv::IMWRITE_JPEG_LUMA_QUALITY = 5,   cv::IMWRITE_JPEG_CHROMA_QUALITY = 6,   cv::IMWRITE_JPEG_SAMPLING_FACTOR = 7,   cv::IMWRITE_PNG_COMPRESSION = 16,   cv::IMWRITE_PNG_STRATEGY = 17,   cv::IMWRITE_PNG_BILEVEL = 18,   cv::IMWRITE_PXM_BINARY = 32,   cv::IMWRITE_EXR_TYPE = (3 << 4) + 0,   cv::IMWRITE_EXR_COMPRESSION = (3 << 4) + 1,   cv::IMWRITE_EXR_DWA_COMPRESSION_LEVEL = (3 << 4) + 2,   cv::IMWRITE_WEBP_QUALITY = 64,   cv::IMWRITE_HDR_COMPRESSION = (5 << 4) + 0,   cv::IMWRITE_PAM_TUPLETYPE = 128,   cv::IMWRITE_TIFF_RESUNIT = 256,   cv::IMWRITE_TIFF_XDPI = 257,   cv::IMWRITE_TIFF_YDPI = 258,   cv::IMWRITE_TIFF_COMPRESSION = 259,   cv::IMWRITE_JPEG2000_COMPRESSION_X1000 = 272 }
	Imwrite flags. More...
enum	cv::ImwriteHDRCompressionFlags {   cv::IMWRITE_HDR_COMPRESSION_NONE = 0,   cv::IMWRITE_HDR_COMPRESSION_RLE = 1 }
	Imwrite HDR specific values for IMWRITE_HDR_COMPRESSION parameter key. More...
enum	cv::ImwriteJPEGSamplingFactorParams {   cv::IMWRITE_JPEG_SAMPLING_FACTOR_411 = 0x411111,   cv::IMWRITE_JPEG_SAMPLING_FACTOR_420 = 0x221111,   cv::IMWRITE_JPEG_SAMPLING_FACTOR_422 = 0x211111,   cv::IMWRITE_JPEG_SAMPLING_FACTOR_440 = 0x121111,   cv::IMWRITE_JPEG_SAMPLING_FACTOR_444 = 0x111111 }
enum	cv::ImwritePAMFlags {   cv::IMWRITE_PAM_FORMAT_NULL = 0,   cv::IMWRITE_PAM_FORMAT_BLACKANDWHITE = 1,   cv::IMWRITE_PAM_FORMAT_GRAYSCALE = 2,   cv::IMWRITE_PAM_FORMAT_GRAYSCALE_ALPHA = 3,   cv::IMWRITE_PAM_FORMAT_RGB = 4,   cv::IMWRITE_PAM_FORMAT_RGB_ALPHA = 5 }
	Imwrite PAM specific tupletype flags used to define the 'TUPLETYPE' field of a PAM file. More...
enum	cv::ImwritePNGFlags {   cv::IMWRITE_PNG_STRATEGY_DEFAULT = 0,   cv::IMWRITE_PNG_STRATEGY_FILTERED = 1,   cv::IMWRITE_PNG_STRATEGY_HUFFMAN_ONLY = 2,   cv::IMWRITE_PNG_STRATEGY_RLE = 3,   cv::IMWRITE_PNG_STRATEGY_FIXED = 4 }
	Imwrite PNG specific flags used to tune the compression algorithm. More...

Functions
bool	cv::haveImageReader (const String &filename)
	Returns true if the specified image can be decoded by OpenCV. More...
bool	cv::haveImageWriter (const String &filename)
	Returns true if an image with the specified filename can be encoded by OpenCV. More...
size_t	cv::imcount (const String &filename, int flags=IMREAD_ANYCOLOR)
	Returns the number of images inside the give file. More...
Mat	cv::imdecode (InputArray buf, int flags)
	Reads an image from a buffer in memory. More...
Mat	cv::imdecode (InputArray buf, int flags, Mat *dst)
bool	cv::imdecodemulti (InputArray buf, int flags, std::vector< Mat > &mats)
	Reads a multi-page image from a buffer in memory. More...
bool	cv::imencode (const String &ext, InputArray img, std::vector< uchar > &buf, const std::vector< int > &params=std::vector< int >())
	Encodes an image into a memory buffer. More...
Mat	cv::imread (const String &filename, int flags=IMREAD_COLOR)
	Loads an image from a file. More...
bool	cv::imreadmulti (const String &filename, std::vector< Mat > &mats, int flags=IMREAD_ANYCOLOR)
	Loads a multi-page image from a file. More...
bool	cv::imreadmulti (const String &filename, std::vector< Mat > &mats, int start, int count, int flags=IMREAD_ANYCOLOR)
	Loads a of images of a multi-page image from a file. More...
bool	cv::imwrite (const String &filename, InputArray img, const std::vector< int > &params=std::vector< int >())
	Saves an image to a specified file. More...
static bool	cv::imwritemulti (const String &filename, InputArrayOfArrays img, const std::vector< int > &params=std::vector< int >())