Safe Haskell	None
Language	Haskell2010

OpenCV.ImgCodecs

Synopsis

Documentation

data ImreadMode Source #

Constructors

ImreadUnchanged
ImreadGrayscale
ImreadColor
ImreadAnyDepth
ImreadAnyColor
ImreadLoadGdal

Instances

Show ImreadMode Source #
Methods showsPrec :: Int -> ImreadMode -> ShowS # show :: ImreadMode -> String # showList :: [ImreadMode] -> ShowS #

imdecode :: ImreadMode -> ByteString -> Mat (S '[D, D]) D D Source #

Reads an image from a buffer in memory.

The function reads an image from the specified buffer in the memory. If the buffer is too short or contains invalid data, the empty matrix/image is returned.

OpenCV Sphinx doc

imdecodeM :: PrimMonad m => ImreadMode -> ByteString -> m (Mut (Mat (S '[D, D]) D D) (PrimState m)) Source #

data OutputFormat Source #

Constructors

OutputBmp
OutputExr
OutputHdr Bool	Compression (run length encoding)
OutputJpeg JpegParams
OutputJpeg2000
OutputPng PngParams
OutputPxm Bool	Binary
OutputSunras
OutputTiff
OutputWebP Int	Quality [1..100], > 100 == lossless

Instances

Show OutputFormat Source #
Methods showsPrec :: Int -> OutputFormat -> ShowS # show :: OutputFormat -> String # showList :: [OutputFormat] -> ShowS #

data JpegParams Source #

Constructors

JpegParams
Fields jpegParamQuality :: Int \[0..100\] jpegParamProgressive :: Bool jpegParamOptimize :: Bool jpegParamRestartInterval :: Word16 jpegParamLumaQuality :: Int jpegParamChromaQuality :: Int

Instances

Show JpegParams Source #
Methods showsPrec :: Int -> JpegParams -> ShowS # show :: JpegParams -> String # showList :: [JpegParams] -> ShowS #

defaultJpegParams :: JpegParams Source #

data PngStrategy Source #

Constructors

PngStrategyDefault
PngStrategyFiltered
PngStrategyHuffmanOnly
PngStrategyRLE
PngStrategyFixed

Instances

Show PngStrategy Source #
Methods showsPrec :: Int -> PngStrategy -> ShowS # show :: PngStrategy -> String # showList :: [PngStrategy] -> ShowS #

data PngParams Source #

Constructors

PngParams
Fields pngParamCompression :: Int pngParamStrategy :: PngStrategy pngParamBinaryLevel :: Bool

Instances

Show PngParams Source #
Methods showsPrec :: Int -> PngParams -> ShowS # show :: PngParams -> String # showList :: [PngParams] -> ShowS #

defaultPngParams :: PngParams Source #

imencode :: OutputFormat -> Mat shape channels depth -> CvExcept ByteString Source #

Encodes an image into a memory buffer.

WARNING: This function is not thread safe!

OpenCV Sphinx doc

imencodeM :: PrimMonad m => OutputFormat -> Mut (Mat shape channels depth) (PrimState m) -> CvExceptT m ByteString Source #

Encodes an image into a memory buffer.

See imencode