faktel-core/io.github.cybersafetyid.faktel.core.image

Package-level declarations

Types

GrayImage

class GrayImage(val width: Int, val height: Int, val data: ByteArray)

A packed 8-bit single-channel image.

ImageDecoder

actual object ImageDecoder

Decodes encoded image files (JPEG, PNG, ...) into an RgbImage using the platform's native codec.

expect object ImageDecoder

Decodes encoded image files (JPEG, PNG, ...) into an RgbImage using the platform's native codec.

actual object ImageDecoder

Decodes encoded image files (JPEG, PNG, ...) into an RgbImage using the platform's native codec.

actual object ImageDecoder

Decodes encoded image files (JPEG, PNG, ...) into an RgbImage using the platform's native codec.

RgbImage

class RgbImage(val width: Int, val height: Int, val data: ByteArray)

An immutable-by-convention, packed 8-bit RGB image (R,G,B,R,G,B,..., row-major, no row padding).

Functions

toRgbImage

fun Bitmap.toRgbImage(): RgbImage

Copies this bitmap's pixels into an RgbImage. The bitmap is not recycled.

warpPerspective

fun RgbImage.warpPerspective(quad: Quad, outWidth: Int, outHeight: Int): RgbImage

Perspective-corrects the region bounded by quad into an upright outWidth x outHeight image (the top-left corner of quad becomes the output's top-left, and so on clockwise).

warpSimilarity

fun RgbImage.warpSimilarity(transform: SimilarityTransform, outWidth: Int, outHeight: Int): RgbImage

Applies transform (source -> output coordinates) and renders an outWidth x outHeight image.