原告使用开源软件StableDiffusion通过输入提示词和设置参数的方式生成涉案图片。具体操作步骤包括：下载并解压StableDiffusion整合包，启动程序；下载并加载模型（如AsiaFacemix-pruned-fix.safetensors和lora-hanfugirl-v1-5.safetensors）；输入正向提示词（如：(ultraphotorealistic:1.3)，extremelyhighqualityhighdetailRAWcolorphoto,inlocations,japanidol,highlydetailedsymmetricalattractiveface,angularsimmetricalface,perfectskin,skinpores,dreamyblackeyes,reddish-brownplaitshairs,uniform,longlegs,thighhighs,softfocus,(filmgrain,vividcolors,filmemulation,kodakgoldportra100,35mm,canon50f1.2)，LensFlare,GoldenHour,HD,Cinematic,BeautifulDynamicLighting）和反向提示词（如：((3d,render,cg,painting,drawing,cartoon,anime,comic:1.2))，badanatomy,badhands,text,error,missingfingers,extradigit,fewerdigits,cropped,worstquality,signature,watermark,username,blurry,artistname,(longbody)，badanatomy,liquidbody,malformed,mutated,badproportions,uncoordinatedbody,unnaturalbody,disfigured,ugly,grossproportions,mutation,disfigured,deformed,(mutation),(child:1.2)，b&w,fat,extranipples,minimalistic,nsfw,lowres,badanatomy,badhands,text,error,missingfingers,extradigit,fewerdigits,cropped,worstquality,lowquality,normalquality,jpegartifacts,signature,watermark,username,blurry,disfigured,kitsch,ugly,oversaturated,grain,low-res,Deformed,disfigured,poorlydrawnface,mutation,mutated,extralimb,ugly,poorlydrawnhands,missinglimb,floatinglimbs,disconnectedlimbs,malformedhands,blur,outoffocus,longneck,longbody,ugly,disgusting,poorlydrawn,childish,mutilated,mangled,old,surreal,text,b&w,monochrome,conjoinedtwins,multipleheads,extralegs,extraarms,meme,elongated,twisted,fingers,strabismus,heterochromia,closedeyes,blurred,watermark,wedding,group,darkskin,dark-skinnedfemale，，tattoos,nude,lowres,badanatomy,badhands,text,error,missingfingers,extradigit,fewerdigits,cropped,worstquality,lowquality,normalquality,jpegartifacts,signature,watermark,username,blurry）；设置迭代步数、高度、提示词引导系数、随机数种子等参数；通过调整模型权重、随机种子和增加提示词等步骤，最终生成涉案图片。