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如何用AI画图
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=== DALL·E(OpenAI) === '''特点与技术:''' DALL·E是OpenAI推出的文本生成图像模型,其名称源自艺术家达利(Dalí)和动画电影机器人瓦力(WALL-E)。最新版本DALL·E 3集成在ChatGPT中,利用GPT大型语言模型理解和扩展复杂的文本描述 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。模型通过12亿参数的Transformer对提示词编码,然后用扩散模型将之转换为图像 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。DALL·E以生成'''独特且逼真的图像'''见长,对于复杂场景或抽象概念的描述有很强的理解和呈现能力 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。它支持三种纵横比(正方形、宽屏和竖屏)并一次生成两张图像,方便用户挑选或继续编辑 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。 '''适用场景:''' DALL·E擅长'''逼真写实风格'''的图像创作,适合需要高度还原文本细节的场景,如产品概念图、广告创意草案或故事情节插图。由于其对复杂提示的处理能力强,也常用于需要'''精细描述'''的创作,例如富含细节的插画或超现实主义风格画作 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。集成在ChatGPT界面后,DALL·E变得非常易用,适合快速头脑风暴或在对话中生成示意图。 '''优点:''' DALL·E使用对话界面,非常上手,对用户输入的文字描述解析充分,并会'''自动强化重要细节'''以提升结果相关性 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。生成结果质量高且颇为真实,细节和纹理表现优秀 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。OpenAI允许用户拥有其生成图像的版权 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)(即'''输出归用户所有''',可自由使用,包括商用),减少了后顾之忧。此外,DALL·E对不恰当内容有内置过滤,输出更安全。 '''缺点:''' DALL·E对某些'''情况仍有不足'''。例如,它难以正确处理图像中的文字(如标志或招牌)以及复杂的空间关系词汇,对物体精确位置的理解有限 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。同时,OpenAI出于安全考虑'''禁止一些内容''',如真实人物的肖像、暴力色情及模仿某些在世艺术家的画风 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)——如果请求绘制知名人物,DALL·E会改以类似风格的人物替代 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。另外,DALL·E目前不支持用户提供输入图像进行再创作,也不支持负面提示词来排除不需要的元素 (The Best AI Image Generators: DALL-E vs Midjourney vs Others)。在使用上,DALL·E需付费订阅(如ChatGPT Plus)才能使用最新版本,免费用户只能通过必应图像生成等途径且有生成次数限制。
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