Function

vImageLookupTable_Planar8toPlanar24(_:_:_:_:)

Uses a lookup table to transform an image in Planar8 format to an image in Planar24 format.

Declaration

func vImageLookupTable_Planar8toPlanar24(_ src: UnsafePointer<vImage_Buffer>, _ dest: UnsafePointer<vImage_Buffer>, _ table: UnsafePointer<UInt32>, _ flags: vImage_Flags) -> vImage_Error

Parameters

src

A pointer to a vImage buffer structure that contains the source image.

dest

A pointer to a vImage buffer data structure. You're responsible for filling out the height, width, and rowBytes fields of this structure, and for allocating a data buffer of the appropriate size. On return, the data buffer this structure points to contains the destination image data. When you no longer need the data buffer, you must deallocate the memory

table

A lookup table that contains 256 values.

flags

Reserved for future use; pass 0.

Return Value

kvImageNoError; otherwise, one of the error codes described in Data Types and Constants.

Discussion

For each pixel, the 8-bit value from the source Planar8 image is used as an index to get a floating-point value from the table. This value is used as the corresponding pixel in the Planar24 result image.

See Also

Transforming with a Lookup Table

func vImageLookupTable_8to64U(UnsafePointer<vImage_Buffer>, UnsafePointer<vImage_Buffer>, UnsafePointer<UInt64>, vImage_Flags) -> vImage_Error

Uses a lookup table to remap 8-bit unsigned integers in a source image to 64-bit unsigned values.