Instance Method

pngRepresentation(of:format:colorSpace:options:)

Renders the image and exports the resulting image data in PNG format.

Declaration

func pngRepresentation(of image: CIImage, format: CIFormat, colorSpace: CGColorSpace, options: [CIImageRepresentationOption : Any] = [:]) -> Data?

Parameters

image

The image object to render.

format

The pixel format for the output image.

colorSpace

The color space in which to render the output image. This color space must conform to either the CGColorSpaceModel.rgb or CGColorSpaceModel.monochrome model and must be compatible with the specified pixel format.

options

No options keys are supported at this time.

Return Value

A data representation of the rendered image in PNG format, or nil if the image could not be rendered.

Discussion

To render an image for export, the image’s contents must not be empty and its extent dimensions must be finite. To export after applying a filter whose output has infinite extent, see the clampedToExtent() method.

See Also

Rendering Images for Data or File Export

static let avDepthData: CIImageRepresentationOption

options dictionary key for image export methods to represent data as AVDepthData.

static let depthImage: CIImageRepresentationOption

options dictionary key for image export methods to output depth data.

static let disparityImage: CIImageRepresentationOption

options dictionary key for image export methods to output disparity data.