今天看看图像的放大效果。

(SFW:2),

HDR,UHD,8K,best quality,masterpiece,Highly detailed,Studio lighting,ultra-fine painting,sharp focus,physically-based rendering,extreme detail description,Professional,Vivid Colors,Bokeh,(EOS R8,50mm,F1.2,8K,RAW photo:1.2),(8k, RAW photo, masterpiece),High detail RAW color photo,a professional photo,highest quality,(best shadow:1.2),(best illustration:1.6),ultra high resolution,highly detailed CG unified 8K wallpapers,physics-based rendering,cinematic lighting,photo,realistic,realism,high contrast,8k HD high definition detailed realistic,best quality,nikon,d850 film,stock photograph,kodak portra 400 camera f1.6 lens,trending on art station,cinestill 800,radiosity,physically-based rendering,high detail,sharp focus,aesthetic,8k uhd,DSLR,intricate details,soft lighting,high quality,

1girl,pale skin,model,glamor,medium breasts,aqua  eyes,long eye lashes,black hair,long hair,wavy hair,look  at  viewer,bare_shoulders,smile,perfet face,perfect round eyes,perfect button bose,perfect leg,Golden Section,

Negative prompt: (NSFW:2),EasyNegative,paintings,sketches,(crop head:2),(worst quality:2),(low quality:2),(normal quality:2),lowres,((monochrome)),((grayscale)),(skin spots),acnes,skin blemishes,age spot,glans,extra fingers,fewer fingers,strange fingers,bad hand,signature,watermark,username,blurry,bad feet,bad leg,duplicate,extra limb,ugly,disgusting,poorly drawn hands,missing limb,floating limbs,disconnected limbs,malformed hands,blurry,mutated hands and fingers,paintings,sketches,(worst quality:2),(low quality:2),(normal quality:2),lowres,((monochrome)),((grayscale)),skin spots,acnes,skin blemishes,age spot,glans,(extra fingers:2),(fewer fingers:2),(strange fingers:2),bad hand,bad nails,signature,watermark,username,blurry,bad feet,bad hand,bad leg,fat,ugly,

Steps: 20, Sampler: DPM++ SDE Karras, CFG scale: 5.5, Seed: 200100, Face restoration: CodeFormer, Size: 512x512, Model hash: ce4d987a0e, Model: DucHaitenAIart-v4.5.3

我们对一张图进行四种不同方式的放大。

512*512原图

第一步是通过“infinite image browser”插件打开，然后选择“打开上下文菜单”，选择“发送到图生图”或“发送到附加功能”。这个过程一般比较快，大概10秒到15秒能完成全部的图片信息发送到响应功能。如果出现停止响应的情况，可以考虑重启UI，最快可以在5秒内完成。

将原始图像发送到图生图或附加功能

需要注意的是，发送过来时模型需要根据提示内容重新手动选择

方法一：SD Scale

设置

这是采用ESRGAN算法放大4倍后的效果

这是Lanczos算法放大四倍后的效果

这是R-ESRGAN 4X+ 算法放大四倍后的效果

这是R-ESRGAN 4++Anime6B 算法放大四倍后的效果

可以发现，R-ESRGAN 4+算法在这类真实照片质感人像图放大中效果较好。

方法二：Ultimate SD Scale

使用这种放大方式据说会更清晰，但是从效果来看好像并不是特别明显，但是耗费的时间比上面的简单SD Scale慢很多

放大设置

这是Lanczos算法放大四倍后的效果

这是采用ESRGAN算法放大4倍后的效果

这是采用R-ESRGAN 4X+算法放大4倍后的效果

这是R-ESRGAN 4++Anime6B 算法放大四倍后的效果

未完，待续……