Tellers Network Image Generation Tool (tlnw-generate-image)
tlnw-generate-image is a standalone, publishable package that unifies AI image generation for stories and posts in the Tellers Network ecosystem. It supports OpenAI (DALL-E 2, DALL-E 3, gpt-image-2, and legacy gpt-image-1.5) as well as Google Gemini Imagen 4 models.
Installation
pip install tlnw-generate-image
Features
- Extensible OOP Provider Architecture: Clean separation of model providers (
DalleProvider,GptImageProvider,GoogleImagenProvider) with registry-based dynamic routing. - Intelligent Size & Quality Preset Mapping: Standardizes orientation presets (
landscape,portrait,square) and qualities, automatically converting them to provider-native formats: aspect ratios (e.g."16:9") for Google Imagen, or concrete dimensions (e.g."1792x1024") for OpenAI. - Custom Dimension Resolution & Validation: Automatically maps exact resolution values (e.g.,
1920x1080or1536x1024.txtin file names) to the closest supported native aspect ratios when routing to Imagen. Forgpt-image-2, it validates custom resolution constraints locally (divisibility by 16, aspect ratios between 1:3 and 3:1, and a maximum resolution edge of 3840px with a minimum edge of 2160px). - Auto-resolution of Output Sizing: Extracts target sizes from prompt filename trailing suffixes (e.g.,
-1536x1024.txt). - Prompt Composition: Concatenates local directory
illustration-master-prompt.txtautomatically with individual scene prompts. - Automatic WebP Conversion: Generates and optimizes WebP formats (
featured.webpandthumbnail.webpwith max-dimension constraints). - Standardized Output Filenames: Output filenames are derived from the prompt file base:
<prefix>-prompt.txtor<prefix>-prompt-<size>.txtbecome<prefix>.<ext>. - Optional WEBP Copy: Use
--webpto create an additional lossless<prefix>.webpcopy alongside the main output. - Thumbnail Generation: Use
--thumbnailto create<prefix>-thumbnail.webpresized to max 768px with 75% quality.
Usage
Generate illustration for a story folder:
generate-image /path/to/story_folder --model dall-e-3 --webp --thumbnail
Process specific prompt files:
generate-image --file /path/to/prompt-1536x1024.txt --model imagen-4-ultra
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