Scenario value of Make Round Image in slide
`presentation-headshot-circle` supports 演示讲者头像场景. Keep composition consistency, edge quality, and destination readability stable with pilot validation, staged rollout, and anomaly logging.
`presentation-headshot-circle`: optimize for throw distance, separate from deck colors with rings, ship 16:9 vs 4:3 safe variants
- Speaker discs prioritize back-row legibility—faces should consume more of the diameter than social avatars, with calm backgrounds so textures don’t war with slide chrome. Preview on a laptop and a simulated high-lumen projector profile; lift midtone contrast gently instead of saturating skin.
- On saturated brand greens or navies, add a 1–2px bright rim or soft shadow so heads don’t merge with the deck. For cold LED stages, keep a neutral master plus a `_venue_warm` tweak documented per room—don’t silently fork unlabeled files.
- If the same talent appears in ultrawide hero strips and cramped 4:3 side columns, export a wider-margin circle so sidebars don’t squash to ellipses. Mark deliverables “projection-only” to stop 72dpi rounds becoming print banners.
Slide round-portrait FAQ: projector mud, LED cast, theme separation, rear-venue readability, aspect swaps
Notebook looks fine but projection washes the face into fog—brightness or curve?
Projectors lift gamma—use S-curves and subtle edge definition, not +20 brightness alone. Preview through projector-mode ICC or calibrated hardware or you’ll be surprised on stage.
Hotel LED casts magenta skin—redo all crops?
Ship a venue-tuned export with explicit naming and keep a neutral canonical file; long term, fix the wall calibration instead of endless one-off tweaks.
Dark skin on dark gradient slides—only teeth read; how to fix compositionally?
Switch to lighter plates inside the circle, add solid outer rings, or locally lift the slide background—exposure alone injects noise. Escalate theme exceptions when readability conflicts with brand fields.
Back row still can’t ID speakers even with huge circles—next lever?
Increase head crop, remove hats/hair volume stealers, and pair with giant name typography on the next slide—angular resolution limits can’t be cheated by bigger JPEGs alone.
16:9 main screen vs 4:3 relay squishes circles beside agendas—prep strategy?
Author a wide-gutter variant centered in the safe column band and mark red zones where side UI eats the disc; forbid non-uniform deck stretching that turns circles into eggs.