简约矢量风格编辑

loving these minimalist vector style edits with nano banana pro
prompt below:
{
 "task": "Transform the provided image into a minimal vector-style poster.",
 "style": {
 "overall_look": "Flat-design, geometric simplification, minimalist vector art",
 "color_palette": {
 "type": "restricted",
 "description": "Use a reduced palette of 3–6 harmonious colors with clean tonal separation and no gradients.",
 "constraints": [
 "No photorealistic rendering",
 "No texture or noise",
 "Avoid excessive detail"
 ]
 },
 "shapes": {
 "treatment": "Reduce all forms to essential geometric contours and solid shapes.",
 "linework": "Use clean, even-weight line art or optionally no outlines depending on poster coherence.",
 "abstraction_level": "High, but not so high that the subject becomes unrecognizable."
 },
 "lighting": {
 "handling": "Remove realistic lighting. Replace shadows and highlights with simplified, flat blocks of color or omit them entirely.",
 "allowed_effects": [
 "Hard-edge shadow shapes",
 "Subtle tonal areas"
 ],
 "forbidden_effects": [
 "Soft shadows",
 "Complex reflections",
 "Photographic highlights"
 ]
 }
 },
 "subject_preservation": {
 "identity": "Maintain recognizable identity through silhouette, proportions, key facial landmarks, and essential features.",
 "proportions": "Keep accurate relative scale of body, head, and major elements.",
 "essential_details": [
 "Define only the most important features needed for recognition.",
 "Remove fine texture, hair strands, pores, and small clothing details."
 ]
 },
 "composition": {
 "framing": "Match the original crop unless specified otherwise.",
 "background": {
 "treatment": "Simplify into 1–2 large flat color fields or abstract geometric forms.",
 "forbidden_details": [
 "Real textures",
 "Complex scenery",
 "Photographic depth of field"
 ]
 },
 "hierarchy": "Subject should remain the focal point, with background serving as supportive minimal structure."
 },
 "color_and_balance": {
 "poster_aesthetic": "High clarity, bold contrast, and legible silhouette.",
 "white_balance": "Neutral; avoid warm or cool photographic shifts.",
 "edge_integrity": "All edges must be crisp, clean, and consistently stylized."
 },
 "output_requirements": {
 "format": "Flat, poster-like vector appearance (though raster output is acceptable).",
 "resolution": "Match original image resolution unless otherwise instructed.",
 "consistency": "No added text, logos, watermarks, or elements not present in the original."
 },
 "prohibited_changes": [
 "Do not alter identity.",
 "Do not add new objects or remove essential ones.",
 "No stylization that contradicts minimal vector aesthetics (e.g., painterly strokes, gradients, 3D shading)."
 ],
 "goal_summary": "Create a clean, minimalist vector-style interpretation of the original image, preserving silhouette, proportions, and essential identity while removing all non-essential details and realistic lighting cues."
}