AI绘画之生成的图片很糊很灰暗

前言

在前面的教程中可以看到一些生成的图片比较灰暗和糊糊的感觉，相信或多或少的小伙伴都会遇到这样的问题，下面就说一下我是如何解决这个问题的。

下载并设置vae模型

vae模型下载链接：https://huggingface.co/stabilityai/sd-vae-ft-ema-original

将如下图的两个模型下载下来：

下载完后，将这两个模型移动到 sd webui 项目的这个文件夹中 stable-diffusion-webui\models\VAE 即可。

随后去到 sd webui 的 setting 选项卡页面，在这个页面中的左边选择 Stable Diffusion 这个选项，在点选后展示的页面中，找到 SD VAE 这一栏参数，将它选择为我们下载的其中一个模型就行，我选择的是以.safetensors后缀结尾的这个模型，具体操作如下图：

最后，点击上方的 Apply settings 保存设置按钮即可。

mov2mov生成的视频模糊偏灰暗

将参数 Noise multiplier 调整到 1 即可解决。

文字生成的图片模糊偏灰暗

将 Hires. fix 参数勾选上即可解决。

图片生成图片模糊偏灰暗

加上如下prompt试试：
正向prompt

best quality ,masterpiece, illustration, an extremely delicate and beautiful, extremely detailed ,CG ,unity ,8k wallpaper, Amazing, finely detail, masterpiece, best quality, official art, extremely detailed CG unity 8k wallpaper,

负向prompt

EasyNegative,Paintings, sketches, (worst quality:2), (low quality:2), (normal quality:2), lowers, normal quality, ((monochrome)), ((grayscales)), skin spots, acnes, skin blemishes, age spot, glans, (6 more fingers on one hand),(deformity), multiple breasts, (mutated hands and fingers:1.5 ), (long body :1.3), (mutation, poorly drawn :1.2) , black-white, bad anatomy, liquid body, liquid tongue, disfigured, malformed, mutated, anatomical nonsense, text font ui, error, malformed hands, long neck, blurred, lowers, lowres, bad anatomy, bad proportions, bad shadow, uncoordinated body, unnatural body, fused breasts, bad breasts, huge breasts, poorly drawn breasts, extra breasts, liquid breasts, heavy breasts, missing breasts, huge haunch, huge thighs, huge calf, bad hands, fused hand, missing hand, disappearing arms, disappearing thigh, disappearing calf, disappearing legs, fused ears, bad ears, poorly drawn ears, extra ears, liquid ears, heavy ears, missing ears, fused animal ears, bad animal ears, poorly drawn animal ears, extra animal ears, liquid animal ears, heavy animal ears, missing animal ears, text, ui, error, missing fingers, missing limb, fused fingers, one hand with more than 5 fingers, one hand with less than 5 fingers, one hand with more than 5 digit, one hand with less than 5 digit, extra digit, fewer digits, fused digit, missing digit, bad digit, liquid digit, colorful tongue, black tongue, cropped, watermark, username, blurry, JPEG artifacts, signature, 3D, 3D game, 3D game scene, 3D character, malformed feet, extra feet, bad feet, poorly drawn feet, fused feet, missing feet, extra shoes, bad shoes, fused shoes, more than two shoes, poorly drawn shoes, bad gloves, poorly drawn gloves, fused gloves, bad cum, poorly drawn cum, fused cum, bad hairs, poorly drawn hairs, fused hairs, big muscles, ugly, bad face, fused face, poorly drawn face, cloned face, big face, long face, bad eyes, fused eyes poorly drawn eyes, extra eyes, malformed limbs, more than 2 nipples, missing nipples, different nipples, fused nipples, bad nipples, poorly drawn nipples, black nipples, colorful nipples, gross proportions. short arm, (((missing arms))), missing thighs, missing calf, missing legs, mutation, duplicate, morbid, mutilated, poorly drawn hands, more than 1 left hand, more than 1 right hand, deformed, (blurry), disfigured, missing legs, extra arms, extra thighs, more than 2 thighs, extra calf, fused calf, extra legs, bad knee, extra knee, more than 2 legs, bad tails, bad mouth, fused mouth, poorly drawn mouth, bad tongue, tongue within mouth, too long tongue, black tongue, big mouth, cracked mouth, bad mouth, dirty face, dirty teeth, dirty pantie, fused pantie, poorly drawn pantie, fused cloth, poorly drawn cloth, bad pantie, yellow teeth, thick lips, bad cameltoe, colorful cameltoe, bad asshole, poorly drawn asshole, fused asshole, missing asshole, bad anus, bad pussy, bad crotch, bad crotch seam, fused anus, fused pussy, fused anus, fused crotch, poorly drawn crotch, fused seam, poorly drawn anus, poorly drawn pussy, poorly drawn crotch, poorly drawn crotch seam, bad thigh gap, missing thigh gap, fused thigh gap, liquid thigh gap, poorly drawn thigh gap, poorly drawn anus, bad collarbone, fused collarbone, missing collarbone, liquid collarbone, strong girl, obesity, worst quality, low quality, normal quality, liquid tentacles, bad tentacles, poorly drawn tentacles, split tentacles, fused tentacles, missing clit, bad clit, fused clit, colorful clit, black clit, liquid clit, QR code, bar code, censored, safety panties, safety knickers, beard, furry ,pony, pubic hair, mosaic, excrement, faeces, shit