IMREAD_GRAYSCALE=0,//!< If set, always convert image to the single channel grayscale image (codec internal conversion).
IMREAD_COLOR=1,//!< If set, always convert image to the 3 channel BGR color image.
IMREAD_ANYDEPTH=2,//!< If set, return 16-bit/32-bit image when the input has the corresponding depth, otherwise convert it to 8-bit.
IMREAD_ANYCOLOR=4,//!< If set, the image is read in any possible color format.
IMREAD_LOAD_GDAL=8,//!< If set, use the gdal driver for loading the image.
IMREAD_REDUCED_GRAYSCALE_2=16,//!< If set, always convert image to the single channel grayscale image and the image size reduced 1/2.
IMREAD_REDUCED_COLOR_2=17,//!< If set, always convert image to the 3 channel BGR color image and the image size reduced 1/2.
IMREAD_REDUCED_GRAYSCALE_4=32,//!< If set, always convert image to the single channel grayscale image and the image size reduced 1/4.
IMREAD_REDUCED_COLOR_4=33,//!< If set, always convert image to the 3 channel BGR color image and the image size reduced 1/4.
IMREAD_REDUCED_GRAYSCALE_8=64,//!< If set, always convert image to the single channel grayscale image and the image size reduced 1/8.
IMREAD_REDUCED_COLOR_8=65,//!< If set, always convert image to the 3 channel BGR color image and the image size reduced 1/8.
IMREAD_IGNORE_ORIENTATION=128//!< If set, do not rotate the image according to EXIF's orientation flag.
};
//! Imwrite flags
enumImwriteFlags{
IMWRITE_JPEG_QUALITY=1,//!< For JPEG, it can be a quality from 0 to 100 (the higher is the better). Default value is 95.
IMWRITE_JPEG_PROGRESSIVE=2,//!< Enable JPEG features, 0 or 1, default is False.
IMWRITE_JPEG_OPTIMIZE=3,//!< Enable JPEG features, 0 or 1, default is False.
IMWRITE_JPEG_RST_INTERVAL=4,//!< JPEG restart interval, 0 - 65535, default is 0 - no restart.
IMWRITE_JPEG_LUMA_QUALITY=5,//!< Separate luma quality level, 0 - 100, default is 0 - don't use.
IMWRITE_JPEG_CHROMA_QUALITY=6,//!< Separate chroma quality level, 0 - 100, default is 0 - don't use.
IMWRITE_PNG_COMPRESSION=16,//!< For PNG, it can be the compression level from 0 to 9. A higher value means a smaller size and longer compression time. If specified, strategy is changed to IMWRITE_PNG_STRATEGY_DEFAULT (Z_DEFAULT_STRATEGY). Default value is 1 (best speed setting).
IMWRITE_PNG_STRATEGY=17,//!< One of cv::ImwritePNGFlags, default is IMWRITE_PNG_STRATEGY_RLE.
IMWRITE_PNG_BILEVEL=18,//!< Binary level PNG, 0 or 1, default is 0.
IMWRITE_PXM_BINARY=32,//!< For PPM, PGM, or PBM, it can be a binary format flag, 0 or 1. Default value is 1.
IMWRITE_EXR_TYPE=(3<<4)+0,/* 48 *///!< override EXR storage type (FLOAT (FP32) is default)
IMWRITE_WEBP_QUALITY=64,//!< For WEBP, it can be a quality from 1 to 100 (the higher is the better). By default (without any parameter) and for quality above 100 the lossless compression is used.
IMWRITE_PAM_TUPLETYPE=128,//!< For PAM, sets the TUPLETYPE field to the corresponding string value that is defined for the format
IMWRITE_TIFF_RESUNIT=256,//!< For TIFF, use to specify which DPI resolution unit to set; see libtiff documentation for valid values.
IMWRITE_TIFF_XDPI=257,//!< For TIFF, use to specify the X direction DPI.
IMWRITE_TIFF_YDPI=258,//!< For TIFF, use to specify the Y direction DPI.
IMWRITE_TIFF_COMPRESSION=259//!< For TIFF, use to specify the image compression scheme. See libtiff for integer constants corresponding to compression formats. Note, for images whose depth is CV_32F, only libtiff's SGILOG compression scheme is used. For other supported depths, the compression scheme can be specified by this flag; LZW compression is the default.
};
enumImwriteEXRTypeFlags{
/*IMWRITE_EXR_TYPE_UNIT = 0, //!< not supported */
IMWRITE_EXR_TYPE_HALF=1,//!< store as HALF (FP16)
IMWRITE_EXR_TYPE_FLOAT=2//!< store as FP32 (default)
};
//! Imwrite PNG specific flags used to tune the compression algorithm.
/** These flags will be modify the way of PNG image compression and will be passed to the underlying zlib processing stage.
IMWRITE_PNG_STRATEGY_DEFAULT=0,//!< Use this value for normal data.
IMWRITE_PNG_STRATEGY_FILTERED=1,//!< Use this value for data produced by a filter (or predictor).Filtered data consists mostly of small values with a somewhat random distribution. In this case, the compression algorithm is tuned to compress them better.
IMWRITE_PNG_STRATEGY_HUFFMAN_ONLY=2,//!< Use this value to force Huffman encoding only (no string match).
IMWRITE_PNG_STRATEGY_RLE=3,//!< Use this value to limit match distances to one (run-length encoding).
IMWRITE_PNG_STRATEGY_FIXED=4//!< Using this value prevents the use of dynamic Huffman codes, allowing for a simpler decoder for special applications.
};
//! Imwrite PAM specific tupletype flags used to define the 'TUPETYPE' field of a PAM file.