AI绘画模型推荐（4）nyanmix模型测评|附图包&链接

作者：素叶锦时发布时间：2023-05-06

写在前面

这次测试的模型是nyanmix模型（以下简称nyan），文件名为nyanMix_230303Absurd2，这个模型在文末附上网盘链接分享。

测评将从vae，clip跳过层，采样方法等几个重要参数出发，通过控制变量法进行模型测试，测评结果仅作参考，不代表实际结果。

这次测试不再采用excel表格，而是采用宫格图的形式（我怎么早没发现这好东西）。简化了一些测试项目，取消了尺寸测试，重绘幅度测试（没必要，小的不用，大的画不出来，没什么参考价值）将tag数量测试转换为画风测试。

测试参数

masterpiece, best quality, masterpiece,best quality,official art,extremely detailed CG unity 8k wallpaper, exusiai \(arknights\),

{{{{{upper body}}}}}, (beautiful detailed face), (beautiful detailed rainbow eyes) ,{{{close to viewer}}},cityscape,{{day}},Bright environment, bright light, bright visuals,white background,

1girl,red hair,short hair, jacket, gloves, shorts,solo,{{halo}}, black gloves, boots, black footwear, black shorts, {red eyes},shirt,{{big wings}}, sitting, open jacket, short shorts, bare legs, off shoulder, open clothes,white shirt,thigh strap, bangs, shoes, thighs,breasts, detached wings, smile, belt, energy wings, long sleeves, closed mouth, small breasts, fetal_position,

((Crystallize texture body)),Gem body, as clear as jewels,Crystallization of clothes,((crystals texture skin)),sparkle, lens flare, light leaks, Broken glass，((((Detailed Glass shaped clothes))))，crystals texture flowers， ((Detailed crystallized clothing)),(gemstone of body),floating, beautiful detailed gemstone sky, gemstone sea,

Negative prompt: lowres, bad anatomy, bad hands, text,error, missing fngers,extra digt ,fewer digits,cropped, wort quality ,low quality,normal quality, jpeg artifacts,signature,watermark, username, blurry, bad feet,multiple breasts, (mutated hands and fingers:1.5 ), (long body :1.3), (mutation, poorly drawn :1.2) ,blurred,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,more than two shoes,more than 2 nipples,different nipples,more than 1 left hand,more than 1 right hand,more than 2 thighs,more than 2 legs,worst quality,low quality,normal quality,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 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, futa, testis,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,

Steps: 20, Sampler: DPM++ 2M Karras, CFG scale: 7, Size: 1024x768, Model: nyanMix_230303Absurd2, Clip skip: 2,

这次的模特是能天使小姐哦。

另外这个负面tag太长了，虽然似乎确实能够减少一些奇形怪状图的出现（不能完全避免），之后的专栏就不再写了，知道用的是这个就行。

1，vae测试

之前说过有个模型不加vae出不了图，就是这个了，虽然能看出大体形状，但基本没有去除噪点，使用该模型请务必使用vae。

另外animevae的饱和度提升不如其他三个，这个模型还是建议用饱和度较高的vae，观感会好一些。

2，clip跳过层测试

熟悉的双人又回来了~~

在clip1时的出图效果似乎画面整体色调会偏亮一点，这对喜欢暗色调的nyan来说是个值得关注的参数。另外在clip3之后，每张图都出现了或大或小的肢体错误，对于高clip的相性显然没有之前测过的几个模型那么好。

3，迭代步数测试

之前我们做模型测试，在迭代步数测试时得出的一般结论为7步出图，20步收敛。有时会有10步才能出图的模型，但这次nyan直接违背了两个规律。

首先是出图，可以明显看出，在第10步时，nyan仍然没有很好的出图效果，在第15步时仍有较严重的肢体错误，直到20步才有比较正常的人体结构。因此使用nyan时建议将迭代步数拉至40以上，这次测试使用20步其实是有点冒险的。

10steps：前方高能：

其次是收敛，一般来讲，大多数模型迭代到第20步，画面就不会再产生大的变动，也就是收敛了。但是在这次测试例中，三个例子都没有收敛，在20步后仍出现较大幅度的变动，其中以例2最为明显：

推测原因有两个；

1，nyan模型本身的特性

2，采样器的原因，这次我换用了DPM++ SDE Karras，之前看到过一些资料表示a系采样器是不收敛的，也许SDE也有这特性？

4，采样方法测试

nyan与之前测试过的orientalpunkmix有一个相同的问题，即LMS和PLMS都无法出图，除此之外，DPM fast由于迭代步数的原因更加抽象，UniPC和LMS Karras一类的出图效果也受到了一定影响，但调高迭代步数应该可以解决。总之还是一句话，除了LMS和PLMS确实出不了图，其他采样方法都建议调高迭代步数，至少40，DPM fast可能要到100。这次选择用DPM++ SDE Karras的其中一个原因也是因为它的迭代步数相对来讲可以小一点。