Nano Banana 建築設計工作流測試 1

本篇文章主要記錄測試使用Nano Banana的過程，快速記錄個人經驗。

今天測試分兩個部分

工地現場施工照片轉渲染照
既有渲染圖片調整細節材質與

工地照 → 渲染設計
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主要是想測試是否能從現場照片（僅有部分牆體）直接對室內空間進行設計。

首先是測試風格轉換，算測試Nano Banana的構圖控制力

現場照片1	現場照片2	參考風格圖片

本次測試先透過ChatGPT將這張風格照片轉成“風格文字描述”，再作為文字Prompt提供給Nano Banana

ChatGPT 5 Instant:

“Minimalist contemporary architecture style, emphasizing clean geometric lines and uncluttered surfaces. Bright white facades that reflect natural light, smooth matte finishes, and a sense of crisp purity. Accents in pastel tones, such as soft blue and pink, add a subtle playful contrast to the otherwise neutral palette. Large glass elements evoke openness and transparency, while the overall atmosphere feels airy, calm, and serene. The style conveys modern simplicity, refined elegance, and a fresh, tranquil ambiance”

第1-1階段
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	Prompt	圖片
輸入	Convert the image into the following described style: Minimalist contemporary architecture style, emphasizing clean geometric lines and uncluttered surfaces. Bright white facades that reflect natural light, smooth matte finishes, and a sense of crisp purity. Accents in pastel tones, such as soft blue and pink, add a subtle playful contrast to the otherwise neutral palette. Large glass elements evoke openness and transparency, while the overall atmosphere feels airy, calm, and serene. The style conveys modern simplicity, refined elegance, and a fresh, tranquil ambiance

輸出：

可以看到圖片輸入與輸出比例有些微差異

第1-2階段
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給Nano Banana輸入

Prompt	圖片
Convert the image into the following described style: Minimalist contemporary architecture style, emphasizing clean geometric lines and uncluttered surfaces. Bright white facades that reflect natural light, smooth matte finishes, and a sense of crisp purity. Accents in pastel tones, such as soft blue and pink, add a subtle playful contrast to the otherwise neutral palette. Large glass elements evoke openness and transparency, while the overall atmosphere feels airy, calm, and serene. The style conveys modern simplicity, refined elegance, and a fresh, tranquil ambiance

Prompt

圖片

Convert the image into the following described style:
Minimalist contemporary architecture style, emphasizing clean geometric lines and uncluttered surfaces. Bright white facades that reflect natural light, smooth matte finishes, and a sense of crisp purity. Accents in pastel tones, such as soft blue and pink, add a subtle playful contrast to the otherwise neutral palette. Large glass elements evoke openness and transparency, while the overall atmosphere feels airy, calm, and serene. The style conveys modern simplicity, refined elegance, and a fresh, tranquil ambiance

生成

接著繼續對話，給他提示這個空間的主要內容

This rendering needs to be corrected, as the intended function of the space was misunderstood. This is actually a kindergarten restroom designed specifically for young children. The right side should be designated as the boys’ restroom, and the left side as the girls’ restroom. In the center, the low partition wall should have sinks on both sides for the children to wash their hands. Additionally, the opening at the back right is meant to be a window, not a door. Please update the design accordingly.

輸出

第1-3階段
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測試直接給予更完整的Prompt，同時包含風格與室內空間說明

Convert the image into the following described style:

Minimalist contemporary architecture style, emphasizing clean geometric lines and uncluttered surfaces. Bright white facades that reflect natural light, smooth matte finishes, and a sense of crisp purity. Accents in pastel tones, such as soft blue and pink, add a subtle playful contrast to the otherwise neutral palette. Large glass elements evoke openness and transparency, while the overall atmosphere feels airy, calm, and serene. The style conveys modern simplicity, refined elegance, and a fresh, tranquil ambiance.

The image represents a kindergarten restroom designed for children. The right side is designated as the boys’ restroom, and the left side is designated as the girls’ restroom. At the back right, the opening shown is actually a window

第2-1階段
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接著換另一種參考圖片，預計是完全參考這張海報上的裝潢材質與風格

先測試直接給底圖＋風格參考圖＋文字prompt

輸入：

prompt	現場照片	參考風格海報
將目前粉藍色的這個廁所渲染圖的整體室內裝潢風格，轉換成這張海報上的材質與風格。

輸出：

構圖整個失控

第2-2階段
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後來是先把海報透過gemini-2.5-pro轉成文字prompt，連同底圖一起傳給nano banana，方法跟前面一樣。

效果最好的prompt如下：

Convert the image into the following described style:

### **Detailed Element Descriptions**

#### **Color Palette**
*   **Primary Colors:** The dominant colors are a soft **powder blue** or sky blue, and a warm **off-white** or cream.
*   **Accent Color:** A bold **matte black** is used consistently across all fixtures and hardware, providing a strong graphic contrast.
*   **Natural Tones:** A **light, natural wood** tone (like pale oak or ash) adds warmth and an organic element.
*   **Neutral Base:** The floor is a neutral base of **light grey and white** with multi-tonal specks.

#### **Walls**
*   **Treatment:** The walls feature a two-tone or "half-tiled" design. The upper portion is a smooth, painted surface in a warm off-white, creating a sense of openness and height.
*   **Tiling:** The lower portion of the walls is clad in vertically-stacked, slender ceramic tiles. This style is often referred to as **"kit-kat" or "finger" tiles**. They have a uniform, light powder-blue color with a subtle satin or low-sheen finish. The grout is a light, non-contrasting color, which emphasizes the vertical lines and texture.

#### **Flooring**
*   **Material:** The floor is made of **terrazzo**.
*   **Appearance:** It features a light grey or white cementitious base with a dense pattern of small, multi-colored aggregate (stone chips). The specks appear to be in various neutral shades of grey, black, and possibly beige, creating a subtle, textured pattern that is both durable and visually interesting.

The image represents a kindergarten restroom designed for children. The right side is designated as the boys’ restroom, and the left side is designated as the girls’ restroom. At the back right, the opening shown is actually a window

輸出：