Nano Banana Pro 多圖合成:人物加商品合成自然的代言形象照
把人物照、商品照、場景照分別上傳,指令裡講清楚誰是主體、誰是要置入的物件、誰是環境,合成出像真實拍攝的商業形象照。重點在光源統一與商品標籤不變形的宣告,適合沒預算請模特兒實拍的小電商。
我會上傳三張圖片,請依以下分工合成一張新照片:
- 圖 1 是主體人物:臉部特徵、髮型必須與圖 1 完全一致,不可變成別人
- 圖 2 是要置入的商品:[商品名稱],外觀、顏色、比例、包裝上的標籤文字都不得變形或改寫
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多圖合成失敗多半不是模型不行,是 prompt 沒講清楚「誰是誰」——把每張圖的角色(主體/物件/環境)編號寫死,成功率立刻不一樣。Nano Banana Pro 最多吃 14 張參考圖,但日常合成三張最穩。商品標籤文字是最容易壞的地方,「不得變形或改寫」要明寫;人物臉部一致性也要宣告,不然常合成出一個五官相似的陌生人。
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