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Description de l'image V3

すらいむん
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【For Beginners】Complete Guide to Mastering Imagen 3 (Image v3) Image Generation

The next-generation, ultra-high-performance AI image generation model "Imagen 3 (Image v3)" has dramatically evolved in its "ability to understand human language (prompts)" compared to traditional models.

Even if you're a beginner who doesn't know how to give instructions to AI or can't get the image you want, once you grasp the basic tricks, you can easily produce high-quality images as if they were created by a professional photographer or illustrator.

This article thoroughly explains techniques to bring out 100% of Image v3's performance, from basics to advanced, organized into chapters.


Chapter 1: Imagen 3's "3 Overwhelming Features"

Before learning techniques, let's first understand how Image v3 differs from traditional AI. Understanding its characteristics will completely change how you give instructions.

  1. It can understand everyday conversational language (natural language) as-is
    Previous AI required instructions broken down into "words, words, words," but Image v3 accurately understands normal sentences like "a scene where ~ is doing ~."
  2. Text depiction is astonishingly accurate
    It can beautifully draw specified letters or words within an image, such as signboard text, logos, or T-shirt prints, without distortion.
  3. Superb realism of light and texture
    It extremely realistically reproduces the physical appearance of the real world, such as skin texture, fabric fibers, water droplets, glass reflections, and twilight light.

Chapter 2: "Magic Prompt Composition Formula" for Drawing Your Ideal Image

A common mistake beginners make is giving instructions with just a single phrase like "cute cat" or "beautiful scenery." To leverage Image v3's performance, create sentences (prompts) keeping the following 4 elements in mind.

💡 Formula for an Effective Prompt

【Subject】 + 【Action/Pose】 + 【Background/Situation】 + 【Art Style/Lighting】

  • Poor Example:
    "A woman in a cafe"
  • Excellent Example:
    "A Japanese woman in her 20s (subject), smiling while holding a warm coffee cup with both hands at a window seat (action). It is raining outside, and water droplets are on the window glass (background). Cinematic lighting, a warm atmosphere, a high-definition photo as if taken with a DSLR camera (art style/light)"

By connecting these elements specifically into a single sentence like this, Image v3 will shape the image in your mind as you intended.


Chapter 3: Camera Techniques for Professional-Level Photorealism

When you want to generate realistic images with Image v3 that could be mistaken for real photos, the trick is to add a few terms used by professional photographers to your prompt.

1. Specify the Angle and Composition
  • Portrait Photography: Results in a composition focusing on the face and upper body, drawing out the subject's charm.
  • Close-up (Macro Photography): Effective for emphasizing details like food texture, water droplets on flowers, or watch gears.
  • Low Angle / High Angle: Allows you to specify a powerful composition looking up from below or an objective composition looking down from above.
2. Specify the Light (Lighting)

"Light" is the most crucial element in AI images.

  • Golden Hour Natural Light: Reproduces the soft, golden light of the evening, creating an emotional atmosphere.
  • Studio Light / Softbox: Creates clean, refined light with soft shadows, like a model shoot.
  • Neon Light / Cyberpunk: Can express the vivid contrast between light and shadow in a night cityscape.
3. Specify the Lens or Bokeh Effect
  • Beautiful background bokeh (shallow depth of field): Makes the subject stand out, instantly giving a professional look to the photo.
  • Shot with 35mm / 50mm lens: Creates a natural field of view ideal for snapshots or portraits.

Chapter 4: Expression Techniques for Mastering Illustration, Anime, and Art Styles

Image v3 excels not only in photos but also in paint texture and animation expressiveness. By simply changing your words, you can depict a wide range of artistic styles.

1. Mastering Anime/Manga Style
  • Modern Anime Illustration: Results in a colorful, detailed, and sophisticated anime style.
  • 90s Retro Anime Style: Can express slightly nostalgic color tones and a unique texture reminiscent of cel animation.
  • Hand-drawn Chibi Character: Creates deformed, cute characters perfect for social media icons.
2. Mastering Painting/Art Style
  • Watercolor Style (soft colors, bleeding): Produces gentle, transparent, and delicate illustrations.
  • Oil Painting Style (impasto, canvas texture): Creates artistic works with a sense of weight and even the feel of paint texture.
  • Concept Art: Can express grand, dramatic worldviews reminiscent of background settings for games or movies.

Chapter 5: How to Use Image v3's Hidden Godlike Feature "Text Insertion"

Master the use of Image v3's greatest strength: "text depiction." Easily create stylish logos, posters, and signboards.

💡 Tips for Inserting Text

The key point is to enclose the text you want to be written in "double quotation marks (" ")" within the prompt.

  • Prompt Example:
    "A retro neon sign, night street, blue and pink light. The letters "OPEN" are glowing on the sign."
  • Prompt Example:
    "A white mug on a marble table. "COFFEE" is neatly printed on the surface of the cup."

Note: Currently, alphanumeric characters (letters and numbers) tend to be depicted much more clearly.


Chapter 6: "Adjustment and Tips to Avoid Failure" for Stepping Beyond Beginner Level 1. Don't Give Up After One Try – "Roll the Gacha"

AI image generation produces different images each time, even with the exact same prompt. If you think "the facial expression isn't what I imagined" or "the placement is slightly off," try pressing the generate button again without changing the words. By trying a few times, you might encounter a miraculous perfect image.

2. Subtract Elements

If unnecessary objects appear in the image, try simplifying the prompt or giving instructions like "don't include ~." Image v3 is smart enough to follow instructions like "a simple white background with nothing placed on it."

3. Name Specific "Materials"

When specifying clothes or accessories, instead of just "clothes," write specific material or item names like "silk blouse," "denim jacket," or "leather bag." Image v3 will perfectly differentiate and depict the unique sheen and texture of those materials.


Conclusion: Create Worlds with Words

The best shortcut to mastering Image v3 is to describe specific situations in words, just as if you were kindly explaining to someone, "I'd like a picture like this."

Start by combining the three elements: "Subject + Place + Light." Experience the thrill of your words transforming into a surprisingly beautiful image!

Quoted from Google

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1 réponses

たぬー·

I see, thank you for the detailed explanation. I'll keep an eye out when I use it next time ^ ^

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