機器之能報導
編輯：Cardinal
以大模型、AIGC為代表的人工智慧浪潮已經在悄然改變著我們生活及工作方式，但絕大部分人依然不知道該如何使用。
因此，我們推出了「AI在用」專欄，透過直觀、有趣且簡潔的人工智慧使用案例，來具體介紹AI使用方法，並激發大家思考。
我們也歡迎讀者投稿親自實踐的創新型用例。
人工拍攝的專業廣告圖片
為了讓食物、化妝品、日用品等產品呈現出精緻、極富吸引力的視覺效果，這類專業圖片（ 帶有編輯風格 ）的構圖乾淨利落，背景簡潔，利用精細的光影控制、微距拍攝等手法極為真實地展現物品的材質、紋理和細微部分，色彩也追求高對比、飽和度。
這類作品通常高於一般的靜物紀實，更接近藝術表現的層次，由專業的廣告攝影師來完成。現在，讓我們跟隨 X 使用者 @Salmaaboukarr 學習如何利用 Midjourney 生成這些精美絕倫的產品特寫。
來自 @Salmaaboukarr 利用 Midjourney生成的效果圖
第一個案例，生成編輯風格的食材（柑橘類水果）特寫。輸入提示：
A vertical alignment of three citrus fruits with accompanying leaves. A stark white backdrop that enhances the vivid colours of the subjects. Water droplets on the leaves to convey freshness, and the gradation of ripeness from unripe green at the top to a mature wrinkled texture at the bottom. The glossy sheen on the fruits and leaves suggesting recent harvest or dew. A conceptual display of the citrus lifecycle, or variety, creating a vibrant contrast between colours and textures, invoking a sense of organic growth and vitality。
翻譯過來：三種柑橘水果垂直排列，周圍有相應的水果葉子。純白色背景，能夠突出主體鮮豔的顏色。
葉子上有水珠，傳達出新鮮感，從上到下，水果的成熟程度逐漸遞進，由綠色未成熟遞進到最下面皺紋質地的成熟品種。
水果和葉子光滑發亮，給人一種剛採摘或露水未乾的感覺。
整體構思是要展現出柑橘的生命週期，或者是展示不同品種，透過色彩和質地的鮮明對比，傳達出生機盎然的感覺。
這是 Midjourney 生成的結果：
來自 @Salmaaboukarr
總的來說，這個提示希望生成一張富有質感和層次感的柑橘水果靜物照，體現新鮮、生命力和多樣性，背景簡潔突出主體，透過細節營造出一種生機盎然的自然氛圍。Midjourney 完成得不錯。
這位作者總結了一個非常實用的公式，按照這個公式逐步描述就能清晰地傳達想要生成影像的各個方面要求，讓 AI 工具更好地理解並生成你期望的結果。
我們分別解釋一下。主題（ subject description ）主要用於描述目標產品，比如種類、數量、排列方式等細節；背景（ background ） 描述背景資訊，比如純色背景、材質、對比度等；裝飾元素（ additional elements ）描述需要新增其他輔助元素，比如水珠、光影、紋理等；動態效果（ effect ）描述想要達到的效果，比如新鮮度、光澤感等；構圖（ overall composition ）描述整個構圖的意圖，比如想要展現多樣性、對比等。
再來看一個有關樹莓的案例。輸入提示：
A single, ripe raspberry is the subject of this image, presented in vivid detail. Each individual drupelet, plump and glistening with moisture, stands out in a rich, red colour that suggests a juicy and fresh quality. The raspberry is delicately held between the thumb and forefinger, which have neatly manicured nails and appear soft, adding a human element to the composition. The background is deliberately blurred, ensuring the raspberry commands the viewer's focus. Additional elements, like the fine hairs on the drupelets that catch the light, contribute to the tactile realism of the fruit. The soft shadows cast by the fingers create an effect of depth. Overall, the composition is an intimate and detailed celebration of natural simplicity, emphasising the texture and freshness of the raspberry.
這段提示語描繪了一個細節入微、質感十足的新鮮樹莓靜物照。
主體部分，一顆單獨飽滿多汁的成熟樹莓，以生動細膩的方式呈現。每個小粒都鮮紅欲滴、水靈飽滿、晶瑩剔透，展現出樹莓新鮮多汁的質地；
背景要求被有意虛化處理，確保觀者的注意力全部集中在樹莓本身；
新增了人物元素，樹莓被拇指和食指嫻熟地捏持，指甲修剪整潔,手指柔軟；
動態效果，小粒上的細小絨毛在光線下閃耀，加強水果的真實質感；手指有陰影以創造出深度的層次感。
整體構圖給人一種自然樸素之美，著重展現樹莓的質地和新鮮感。
這是 Midjourney 生成的結果：
來自 @Salmaaboukarr
同樣的提示，下面是我們用 DALL-E-3 生成的效果，你覺得哪個更好？
來自機器之能
A cluster of pastel-coloured macarons in shades of pink and cream, floating in mid-air against a white background, with soft shadows casting a gentle depth beneath each one. The macarons have a matte finish with tiny, sugary beads of condensation, suggesting a fresh, delicate texture. The scene is illuminated by a diffused light that creates a subtle glow on their surfaces, enhancing their dreamy, candy-like appearance. The composition is balanced and airy, with the macarons arranged in a way that allows the viewer's eye to wander from one sweet treat to the next in a seamless flow of confectionery delight
來自 @Salmaaboukarr
來自機器之能
A close-up view of several turquoise soap bubbles with varying sizes on a light blue background. The focus is sharp, capturing the shimmering highlights and intricate swirls within the bubbles. In the background, a soft gradient of white to teal represents a liquid surface, subtly suggesting water without explicit detail. Additional elements include smaller, frothy bubbles clustered around the larger, clear ones, creating a sense of depth and texture. The effect is one of delicate beauty and purity, with a hint of freshness evoked by the cool colour palette. The overall composition balances the simplicity of the subject with the complexity of the patterns within each bubble and the gentle contrast between the different sizes and the background gradient
來自 @Salmaaboukarr
來自機器之能
A detailed depiction of luscious, shiny caramel, featuring evident swirls and sleek surfaces, positioned atop a stark white backdrop to enhance contrast. Additional emphasis is placed on the texture and chromatic richness, underscoring its opulent make-up and intense brown shade. The imagery aims to embody the sumptuousness of artisanal melted chocolate or an elegant confectionery, presented in an aesthetically pleasing manner
來自 @Salmaaboukarr
同樣的提示，下面是用 DALL-E-3 生成的效果，也不錯：
來自機器之能
A cluster of ripe pomegranate arils, vivid ruby-red and plump, closely packed and occupying the entirety of the frame, with snippets of the pomegranate's cream-coloured, spongy membrane providing contrast against the glistening seeds; the seeds themselves exhibit a translucent quality that captures light, enhancing their jewel-like appearance; all set against a backdrop that fades into soft focus, drawing attention to the intricate details and dewy texture of the arils in the foreground; composed to evoke a sense of abundant freshness and natural beauty.
來自 @Salmaaboukarr
來自機器之能
這是一個極簡主義風格的橙子靜物照。輸入提示：
A glistening orange slice is the focal point, its surface dotted with beads of juice. A soft, pale backdrop provides a minimalist stage that accentuates the subject. Dark, spherical beads adorn the slice, droplets, set against a curling strip of textured orange peel. The composition captures a small droplet of juice mid-flight, adding a sense of dynamic movement. This still-life arrangement celebrates the vivid colours and textures of citrus, inviting the viewer to sense the fresh, tangy aroma and flavour, encapsulating the artistry in nature's design
來自 @Salmaaboukarr
來自機器之能
以後我們會透過新專欄帶來更多 AIGC 案例演示，也歡迎大家留言評論並給出改進建議。