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94 lines
4.4 KiB
Rust
94 lines
4.4 KiB
Rust
//! Estimate the starting look of a raw without a camera colour matrix (Sony ARW, Nikon NEF, Panasonic
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//! RW2, Fujifilm RAF, Canon CR2/CR3, Pentax PEF, Samsung SRW, Olympus ORF) from its own JPEG. Colour and luminance are fitted separately; the JPEG supplies correspondences only,
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//! never output pixels or a replacement for RAW editing.
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//! A global matrix can't follow the camera's hue-dependent rendering (the best matrix rendered a
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//! lime shirt olive that the camera kept lime): a hue/saturation table fitted to the residuals
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//! (applied like a DNG `ProfileHueSatMap`) corrects that when it also improves the held-out pixels.
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use lightcraft_color::{D50, D65, Mat3, PROPHOTO, REC2020, Xy, bradford, luminance_2020};
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use lightcraft_pipeline::tone::{CameraTone, ToneMap};
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use lightcraft_raster::{
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Rgb32f,
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resample::{Filter, fit, resize},
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};
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use lightcraft_raw::{
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ColorData, RawFormat, RawImage,
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color::CameraTransform,
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profile::{HsvTable, ProfileLook, ToneCurve},
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};
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mod colour;
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mod hue_sat;
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mod look_fit;
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mod mono;
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mod pairs;
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mod proxy;
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mod tone;
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#[cfg(test)]
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pub(crate) use colour::{PROFILE_PROXY, dng_colour, dng_tone_eligible};
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#[cfg(test)]
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use colour::{PROXY, starting_colour_with};
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pub(crate) use colour::{file_local_look, starting_colour, starting_colour_tags, with_starting_colour};
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pub(crate) use hue_sat::HueSat;
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#[cfg(test)]
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use hue_sat::{MIN_LUMINANCE_KEPT, NO_LUMINANCE_KEPT, fit_hue_sat, hue_saturation, restore_weight};
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#[cfg(test)]
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pub(crate) use look_fit::fit_preview;
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#[cfg(test)]
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use look_fit::{
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FIT_PREVIEW_MAX_PIXELS, SENSOR_CLIP, at_most, clips_more, correct_vignetting, fit_look, fit_look_with, sony_dro_off_tone, with_dro_off_tone,
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without_clipped,
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};
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#[cfg(test)]
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use mono::{fit_dark_tone, fit_tone_only, monochrome, monochrome_look, to_prophoto};
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#[cfg(test)]
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use pairs::{
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Attempt, Pairs, TONE_FITS, collect_pairs, colour_pair, displayed, fit_attempt, fit_pairs, fit_pairs_ordered, fit_pairs_with, fit_partial,
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fit_tone_with_shadows, luma, rank_correlation_ties, search_ordered,
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};
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#[cfg(test)]
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pub(crate) use proxy::LensGeometry;
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#[cfg(test)]
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use proxy::{
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Cr3Framing, MIN_PREVIEW_FRACTION, alignment, estimate_cr3_framing, into_lens_geometry, proxies, reference_at, sensor_proxy, structure_agrees,
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};
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pub(crate) use proxy::{fit_profile, lens_geometry, profile_pairs};
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#[cfg(test)]
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use tone::{HighlightCheck, ToneFit, fit_tone, fit_tone_conditional, highlights};
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/// The version of the camera-look fit: how a raw's colour matrix, hue/saturation table and tone
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/// and chroma curves are chosen. Smart previews record it in their header (`look_version`), because
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/// they keep the curve and the colour the fit produced; one written by an older version is rebuilt
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/// from its original when that is online, and kept as it is while it is offline.
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///
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/// **Bump this whenever a change makes the fit give a different result for the same file** (the
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/// fit, its gates, the fallbacks, the camera profiles' effect on it). Do not bump it for changes
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/// that leave the fitted look alone. `RENDER_CACHE_VERSION` covers renders; this covers proxies.
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///
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/// 1: the fit as of #499's follow-up; 2: Sony DRO (tone curve lowered to Sony's curve without DRO)
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/// and the ILCE-7CR profile (#528, #583, #568, #616); 3: the camera JPEG read in the colour space the raw's EXIF
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/// states, for every make (#778).
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/// 4: a tone curve from black-and-white camera JPEGs (#577).
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/// 5: dark JPEG luminance pairs for the camera toe (#1307).
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/// 6: the ILCA-99M2 profile.
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/// 7: the sensor proxy follows the file's lens warp when the camera JPEG is lens-corrected.
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/// 8: the bundled NIKON Z 6_2 profile.
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/// 9: the bundled NIKON Z 8 and NIKON D5300 profiles.
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/// 10: DNG tone fit for profiles with a look table and for 1024 px (Lightroom) previews.
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/// 12: tone curves of low-contrast scenes (range limit 1.2, with the bright-area check for curves under 1.5, #699);
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/// a tone-only fallback for near-black scenes with too few colour pairs (#1587); DNG tone fitting uses a
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/// lens-corrected proxy when the file carries lens opcodes; validated A7CR distortion, including the lens data
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/// stored with each smart preview.
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pub const LOOK_VERSION: u32 = 12;
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#[derive(Clone, Debug)]
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pub(crate) struct CameraLook {
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pub matrix: Mat3,
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pub tone: CameraTone,
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/// Hue/saturation correction after `matrix`, in linear ProPhoto RGB (DNG `ProfileHueSatMap`).
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pub hue_sat: Option<HsvTable>,
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}
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#[cfg(test)]
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mod tests;
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