MotuArt Color Engine
v1AI portrait skin-color grading, optional pro skin smoothing, skin segmentation, and purpose-driven ID/portrait photo cropping with background swap, via the MotuArt Color Engine HTTP API. Use when the user wants to color-grade / correct skin tone on portrait photos, apply a film or commercial look, smooth skin (pores/blemishes), batch-grade a folder of portraits, export a skin mask (matte / segmentation) from a portrait, or crop a photo to a standard ID/passport/visa/headshot size and change its background color. Trigger keywords: portrait color grading, skin tone, skin smoothing, retouch, skin mask, matte, film look, headshot, retouch color, id photo, passport photo, visa photo, photo crop, crop to size, background color swap, 调色, 肤色, 磨皮, 皮肤蒙版, 人像调色, 证件照, 裁剪, 换底, 一寸, 二寸.