Meziantou.FrameworkGainMap Class
A gain map to write next to an image (JpegEncoder.GainMap, AvifEncoder.GainMap): the image whose samples give the gain, and the parameters that turn them into the gain (ISO 21496-1).
public sealed class GainMapRemarks
The samples of GainMap.Image are the coded values of the gain map, as AuxiliaryImage.Decode returns them: a grayscale image gives one gain for the three channels. It may be smaller than the base image, which readers then cover by interpolation. Its color description (ICC profile, CICP) is the color space of the alternate rendition, which a gain map that does not use the color space of the base image applies in (GainMapMetadata.UseBaseColorSpace).
The image is borrowed, not copied: it must stay alive, and unchanged, until the encoder has written the file.
Constructors
| Name | Description |
|---|---|
| GainMap(Image, GainMapMetadata) | Initializes a new instance of the GainMap class. |
GainMap(Image, GainMapMetadata)
GainMap.csInitializes a new instance of the GainMap class.
public GainMap(Image image, GainMapMetadata metadata)Parameters
imageImage- The gain map image: one frame, its samples the coded values of the gain map.
metadataGainMapMetadata- The parameters of the gain map.
Exceptions
ArgumentNullExceptionimageormetadataisnull.
Properties
| Name | Description |
|---|---|
| Image | Gets the gain map image. |
| Metadata | Gets the parameters of the gain map. |