Function

vImageConvert_Planar8toPlanarF(_:_:_:_:_:)

Converts a Planar8 image to a PlanarF image.

Declaration

func vImageConvert_Planar8toPlanarF(_ src: UnsafePointer<vImage_Buffer>, _ dest: UnsafePointer<vImage_Buffer>, _ maxFloat: Pixel_F, _ minFloat: Pixel_F, _ flags: vImage_Flags) -> vImage_Error

Parameters

src

A pointer to a vImage buffer structure that contains the source image whose data you want to convert.

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.

maxFloat

The maximum pixel value for the destination image.

minFloat

The minimum pixel value for the destination image.

flags

The options to use when performing the operation. If you plan to perform your own tiling or use multithreading, pass kvImageDoNotTile.

Return Value

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

Discussion

This function transforms a Planar8 image to a PlanarF image, using a minFloat value and a maxFloat value to specify the range of values for the PlanarF image. The function maps each source pixel value(which can be in the range of 0 to 255 inclusive) linearly into the range minFloat to maxFloat, using the following mapping (where i is the old pixel value):

new pixel value = i* (maxFloat - minFloat)/255.0f + minFloat

The two buffers must have the same number of rows and the same number of columns.

See Also

Converting Between Planar Formats

func vImageConvert_PlanarFtoPlanar8(UnsafePointer<vImage_Buffer>, UnsafePointer<vImage_Buffer>, Pixel_F, Pixel_F, vImage_Flags) -> vImage_Error

Converts a PlanarF image to a Planar8 image, clipping values to the provided minimum and maximum values.