export interface ImageInput {
    type: 'base64' | 'url' | 'file';
    data: string;
    mimeType?: string;
}
export interface VisionResult {
    description: string;
    text_content?: string;
    objects?: string[];
}
export declare function detectMimeType(buffer: Buffer): string;
export interface VisionManagerConfig {
    model?: string;
    apiKey?: string;
    baseURL?: string;
    maxImageSize?: number;
}
export declare class VisionManager {
    private config;
    constructor(config?: VisionManagerConfig);
    /**
     * Load image data as base64, detecting MIME type.
     */
    loadImage(input: ImageInput): Promise<{
        base64: string;
        mimeType: string;
    }>;
    /**
     * Prepare messages in OpenAI multimodal format.
     */
    prepareMessage(images: ImageInput[], text: string): Array<Record<string, unknown>>;
    /**
     * Analyze an image with optional prompt.
     */
    analyze(image: ImageInput, prompt?: string): Promise<VisionResult>;
    /**
     * Extract text (OCR) from an image.
     */
    extractText(image: ImageInput): Promise<string>;
    /**
     * Compare multiple images.
     */
    compareImages(images: ImageInput[], prompt?: string): Promise<string>;
}
//# sourceMappingURL=vision.d.ts.map