Added noise

readme.md

@@ -173,6 +173,8 @@ cargo run --release -p resolved-showcase -- --serve 0.0.0.0:8010
   L0 and C0). `--supersampling N` renders each pixel as N x N finer ones from C1
   (default 2). A tier the scene or the data cannot support stops with an error
   naming what is missing.
+- `--seed N` and `--frame N` pick the detector noise at camera C1 (default 0
+  and 0): the same seed and frame give the same image.
 - `--data DIR` says where the tiers' data is (`earth/bmng-2004-MM.jpg`,
   `moon/wac-hapke-643.png` and `stars/stars.bin`).
   Without it the CLI tries `RESOLVED_DATA`, then `./data`, then the
@@ -202,10 +204,11 @@ Earth and the Moon, the Sun's limb darkening, and stars from Hipparcos,
 Tycho-2 and Gaia, which camera C1 shows. Camera C1 is under way: so far,
 pixels that collect light over their area, lens distortion (Brown-Conrady),
 lens blur (a Gaussian PSF) applied to the scene rendered 2 x 2 finer than the
-pixels, and the Sun, Moon and Earth at their apparent positions (light time
-and aberration). Planned, in order:
+pixels, the Sun, Moon and Earth at their apparent positions (light time
+and aberration), and detector noise (shot, dark current and read noise,
+seeded and reproducible). Planned, in order:
 
-- Camera: detector noise, pixel-to-pixel variation, saturation and blooming.
+- Camera: pixel-to-pixel variation, saturation and blooming.
 - Lighting: BRDF and spectral materials, atmospheric scattering, clouds, lunar
   terrain.
 - Portable ray tracing, path tracing, and label outputs for ML.