# GPT Image Hub prompt

## Chân Dung Ảo Ảnh Thị Giác Hai Chiều
- URL: https://www.gptimagehub.com/vi/library/dual-orientation-optical-illusion-portrait
- Generator URL: https://www.gptimagehub.com/vi/generate?promptId=oss-ym-mm-10302
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fvi%2Flibrary%2Fdual-orientation-optical-illusion-portrait
- Category: Áp phích và minh họa
- Model: gpt-image-2-5-sunburst
- Aspect ratio: 4:5
- Style: illustration
- Tags: ảo ảnh thị giác, đơn sắc, nghệ thuật vector, tranh vẽ nét, chân dung, tối giản, họa tiết moire
- Updated: 2026-10-27T10:55:43.098Z
- Created: 2026-10-27T10:55:43.098Z

Tạo bức chân dung ảo ảnh thị giác đơn sắc hiển thị một khuôn mặt khi để thẳng và khuôn mặt khác khi lộn ngược. Tùy chỉnh cặp chủ thể và mẫu đường nét để biến tấu.

### Full prompt
```text
A dual-orientation optical illusion portrait. When viewed upright (0° orientation), the artwork clearly depicts [a young woman's left-facing side profile]. When rotated 180 degrees upside down, the exact same composition reveals [an elderly woman's side profile]. Both figures share identical contour lines and spatial boundaries with no split screens, overlays, or separate drawings. The transformation relies entirely on contour reinterpretation and structural ambiguity: the young woman's chin functions as the elderly woman's nose upon rotation; the young woman's ear forms the elderly woman's eye socket; the young woman's neckline forms the elderly woman's mouth and chin. Style: Moiré interference pattern rendered with ultra-thin radial or dual-frequency vector lines across the composition, creating optical depth without breaking the illusion. Strict monochrome palette with pure black background (#000000) and sharp white to light gray linework. Tonal gradients created solely through line density. Ultra-precise vector alignment, razor-sharp silhouette edges, no blur, no texture noise.
```