imgcodecs.hpp File Reference

#include "opencv2/core.hpp"

Namespaces
namespace	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::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_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_WEBP_QUALITY = 64,   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::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 'TUPETYPE' 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.
bool	cv::haveImageWriter (const String &filename)
	Returns true if an image with the specified filename can be encoded by OpenCV.
Mat	cv::imdecode (InputArray buf, int flags)
	Reads an image from a buffer in memory.
Mat	cv::imdecode (InputArray buf, int flags, Mat *dst)
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.
Mat	cv::imread (const String &filename, int flags=IMREAD_COLOR)
	Loads an image from a file.
bool	cv::imreadmulti (const String &filename, std::vector< Mat > &mats, int flags=IMREAD_ANYCOLOR)
	Loads a multi-page image from a file.
bool	cv::imwrite (const String &filename, InputArray img, const std::vector< int > &params=std::vector< int >())
	Saves an image to a specified file.