Red desaturation — 3 algorithms, all face-zone excluded
3 samples, full frame. All 3 variants keep the face zone (top 30%) at original. V1 = flat HSL (photographer's approach). V2 = smooth HSL (gaussian falloff). V3 = RGB red-excess (most targeted). Pick the best look for the hands.
Sweatshirt · off-white
Original (cold hands)
V1 · flat HSL + mask
V2 · smooth HSL + mask
V3 · RGB red-excess + mask
Top · silver grey
Original (cold hands)
V1 · flat HSL + mask
V2 · smooth HSL + mask
V3 · RGB red-excess + mask
Dress · chocolate brown
Original (cold hands)
V1 · flat HSL + mask
V2 · smooth HSL + mask
V3 · RGB red-excess + mask
Hoodie · fluffy sculptural zip-up
Original (cold hands)
V1 · flat HSL + mask
V2 · smooth HSL + mask
V3 · RGB red-excess + mask
Trousers · black tobi zubon
Original (cold hands)
V1 · flat HSL + mask
V2 · smooth HSL + mask
V3 · RGB red-excess + mask