export type SegmenterResults = {
    image: CanvasImageSource;
    segmentationMask: CanvasImageSource;
};
type SegmenterOptions = {
    selfieMode?: boolean;
    modelSelection?: number;
};
export type Segmenter = {
    initialize(): Promise<void>;
    setOptions(opts: SegmenterOptions): void;
    onResults(cb: (r: SegmenterResults) => void): void;
    send(input: {
        image: CanvasImageSource;
    }): Promise<void>;
    close(): Promise<void>;
};
export declare const loadSegmenter: () => Promise<Segmenter>;
/** Most recent completed mask, or null before the first result. Non-blocking. */
export declare const getLatestMask: () => SegmenterResults | null;
/**
 * Kick a new segmentation if none is in flight; returns immediately. The result
 * lands in `getLatestMask()` via the `onResults` handler registered at load.
 * No-op until the segmenter has finished loading. `inFlight` clears when `send`
 * settles, so a failed call cannot wedge the pipeline.
 */
export declare const requestMaskIfIdle: (image: CanvasImageSource) => void;
export {};
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