Module imageio.region
Neutral decoded-region and component-plane contracts.
These types report technical storage, sampling and source metadata. They do
not perform colour conversion, resampling, NoData interpretation or raster
ownership integration.
Functions
| Name | Description |
copyPlaneBlock(destination, source, destinationX, destinationY, width, height)
|
Copy a visible block into a plane with explicit geometry.
|
sampleCenter(origin, planeIndex, spacing, offset)
|
Return the exact reference-grid position of a stored plane sample.
|
unknownPhaseSampling(horizontalFactor, verticalFactor)
|
Construct a descriptor whose spacing is known but whose phase is not.
|
zeroPhaseSampling(horizontalFactor, verticalFactor)
|
Construct a known integer-grid descriptor with a zero phase offset.
|
Structs
| Name | Description |
ImagePlane
|
A caller-owned decoded component plane.
Plane dimensions may differ from the region dimensions, for example for
subsampled JPEG chroma components.
|
ImagePlaneInfo
|
Technical JPEG/component description; no colour meaning is implied.
|
ImageRegion
|
A two-dimensional decoded image region.
|
ImageRegionInfo
|
Technical description of decoded image samples.
|
PlaneAccumulator
|
Caller-owned collection used while assembling native component blocks.
|
PlaneSamplingGeometry
|
Position of samples in a plane relative to the region reference grid.
|
Rational
|
An exact rational value used for format-defined sample positions.
|
SourceColorMetadata
|
Neutral colour-source facts. Unknown means the encoded source did not
declare the value; it never authorizes a decoder-side guess.
|
Enums
| Name | Description |
ComponentRole
|
Neutral component role reported by a decoder, never a colour conversion.
|
PlaneGeometryStatus
|
Machine-readable state of source plane-grid geometry.
|
SourceModel
|
Neutral source signalling discovered in encoded metadata.
|