An extremely detailed, multi-step LLM prompt designed to convert any image into a background (BG) dot art image strictly adhering to the technical specifications and constraints of the Nintendo Entertainment System (NES) hardware, including resolution, color palettes, tile limits, and dithering techniques. This prompt was originally developed for Gemini's Nano Banana Pro but was later used to build a dedicated tool due to LLM interpretation issues.
[NES Final Specification/Complete Version: BG-Only Algorithm Execution Type Dot Art Conversion Prompt] Convert this image into BG dot art specifications for the Family Computer (NES) hardware, strictly executing the following mathematical and logical steps, without limiting the subject matter. The purpose of this prompt is to satisfy the constraints required for BG to function on actual NES hardware. Aesthetic-only NES-style expression is prohibited. Use only the BG layer; sprites are strictly prohibited. ──────────────────────── [Prerequisites (NES BG Implementation Rules)] ──────────────────────── - Output Resolution: 256 × 240 pixels - Layer Used: NES BG only - Sprite usage prohibited - Transparency processing is not performed - Index 0 of each palette is treated as the NES universal background color - Index 0 is common to all palettes - The color with the largest coverage area on the entire screen is assigned as the universal background color - Color number 0 can also be used as a normal drawing color ──────────────────────── [Step 1: Geometric Image Processing (Protagonist Priority, No Deformation Cropping)] ──────────────────────── 1. Set the conversion size to 256 × 240 pixels 2. Always maintain the aspect ratio of the original image - Scale up or down until the shorter side fits the conversion size - Stretching the image is strictly prohibited 3. Automatically detect the protagonist (person, animal, building, etc.) in the image, and adjust the crop position so that the protagonist is maximally contained within the frame 4. If the protagonist cannot be detected, crop based on the center of the screen ──────────────────────── [Step 2: Tile Decomposition and Attribute Block Definition (NES Compliant)] ──────────────────────── 1. Divide the image into 8×8 pixel tiles 2. Treat 2×2 tiles (16×16 pixels) as 1 attribute block 3. Subsequent palette constraints and color constraints must be applied per attribute block ──────────────────────── [Step 3: Attribute Block Unit Palette Clustering (Maximum 4)] ──────────────────────── 1. Analyze the color distribution within each 16×16 attribute block 2. Cluster all attribute blocks by color distribution similarity, classifying them into a maximum of 4 groups 3. If the hue (blue, green, etc.) is clearly different from other areas, treat it as an independent group whenever possible 4. However, the NES BG sub-palettes are limited to a maximum of 4. Prioritize the protagonist area, and areas of low importance may be integrated into similar colors ──────────────────────── [Step 4: NES BG Palette Generation (4 colors × 4 sets)] ──────────────────────── 1. Index 0 (Universal Background Color) - Calculate the color with the largest coverage area on the entire screen, and assign it to Index 0, common to all palettes 2. Index 1–3 (Unique Colors) - For each sub-palette, select 3 colors that represent the 'light part,' 'mid-tone,' and 'dark part' of that attribute group - Colors extremely close in hue or brightness to Index 0 are prohibited ──────────────────────── [NES Color Palette Constraints (Hardware Compliant, NTSC)] ──────────────────────── - Available colors are strictly limited to the 54 NES hardware-compliant NTSC palette colors listed below - Palette generation, color selection, and quantization must always be performed from this 54-color set - Generation of new colors, RGB interpolation, or use of continuous values is prohibited - The following color set contains exactly 54 colors NES NTSC usable palette (54 colors, hex RGB) 000000,1D2B53,7E2553,#008751,AB5236,5F574F, C2C3C7,FFF1E8,FF004D,FFA300,FFEC27,00E436, 29ADFF,83769C,FF77A8,FFCCAA,291814,111D35, 422136,125359,742F29,49333B,A28879,F3EF7D, BE2633,E06F8B,E0A872,B2DCEF,4F6781,8E478C, A3CE27,44891A,2A4F3E,6D758D,9D9D9D,FFFFFF, 4B692F,6A6A6A,8F563B,C2C3C7,DF7126,D95763, D77BBA,FBF236,99E550,6ABE30,37946E,5FCDE4, CBDBFC,ADB5BD,EEC39A,696A6A ──────────────────────── [Step 5: CHR Pattern Compression (BG 256 Tile Limit)] ──────────────────────── 1. Calculate the number of unique 8×8 tile patterns used across the entire image 2. Limit the number of unique tiles to not exceed 256 types 3. For large areas like backgrounds, sky, or walls, repeatedly use completely identical dot patterns to minimize the number of tile types 4. Tiles with slight differences may be integrated using the following methods: - Readjustment of dither placement - Replacement of intermediate colors - Requantization within the attribute block ──────────────────────── [Step 6: Dithering (NES 4-Color Constraint Support)] ──────────────────────── 1. Use only the 4 assigned colors within each attribute block 2. To express pseudo-gradation, apply the following dither
An image of the character from the reference image sitting in a room. A wide shot including the corner of the room. The room has no windows, red wallpaper and floor, only a simple red corner sofa and a red low table along the wall. The letter 'A' is written largely in white on the wallpaper.
Zhuge Liang Kongming (human) VS Sima Yi Zhongda Like {argument name="style" default="Final Fantasy X"} {argument name="element1" default="Water Dragon"} VS {argument name="element2" default="Fire Dragon"} Background set to space Radiation of stars Charm on the feather fan
{ "Objective": "Create a panoramic character concept decomposition sheet for a Japanese high school student. Center: Full-body illustration of female student in JK uniform. Surrounding: Layered clothing showing school uniform layers and casual wear, Expression sheet with cheerful smile, studious concentration, surprised excitement, and shy embarrassment, Texture zoom on uniform fabric and school accessories", "FaceReference": { "Mode": "Strict face preservation", "Instruction": "Use uploaded reference image for exact facial features, bone structure, and proportions", "Consistency": "Face must remain identical across all frames" }, "CharacterDetails": { "Subject": { "Type": "Japanese high school student", "Age": "17" }, "ClothingLayers": [ "School blazer with emblem", "White button-down shirt", "Pleated skirt", "Casual underwear set", "Loafers and socks" ] }, "RelatedItems": { "Bag": "School satchel with textbooks, notebooks, pencil case, lunch box", "SchoolTools": "Student ID card, club activity items, study materials", "Personal": "Smartphone, headphones, cute accessories, manga, snacks" } }
A {argument name="subject" default="vampire knight"}, {argument name="location" default="Castle Dracula"} defender burning up from sunlight. Heavy cloak can't block out the sun completely!
Make Ukyo-chan and a glasses-wearing Kunoichi fight in the image of the Samurai Shodown game screen
A scene in an open clearing on the edge of a dense evergreen forest. There is snow on the ground and the weather appears icy and cold. The sun is bright overhead and the air is clear, and there are rows and rows of organized military tents in the distance. A few banner flags are mounted on poles near the tent camps with the prominent feature of a {argument name="banner feature" default="wolf head"}. Another banner shows a simple red eagle. Various soldiers move above between the camp tents, tending cook fires, sharpening swords, and planning around maps. The aesthetic should feel Medieval or Renaissance, with no technology, but sophistication in the army camp organization. The composition is at the eye level of a human adult. The scene should be realistic but that of a fantasy world like Wheel of Time. --ar 9:16
keep the girl’s character and pose from Image 2; have her turn her head toward the camera and smile; raise her left hand, make a fist, and point toward the logo from Image 1. The logo should float above her upper body, fully visible with its original background color preserved. No UI overlays.
A {argument name="subject" default="young man with medium-length wavy silver hair"}, sharp jawline, light stubble, intense hazel eyes, wearing a futuristic hoodie, sitting in a {argument name="environment" default="neon-lit cyberpunk room"} full of holographic screens, glowing {argument name="colors" default="blue and pink lights"} reflecting on his face, dark moody atmosphere, ultra-detailed, cinematic lighting, 4K, cyberpunk aesthetic
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