# Image Hub Our Image Hub has two powerful tools: Text-to-Image and Image-to-Image. ## 1. Text-to-Image It allows users to create high quality images. It is a fine-tuned version of [Stable Diffusion XL (SDXL)](https://stablediffusionxl.com/) model, and is optimized for generating comic style images. This model was originally trained to generate the Skillful AI CyberCat NFT collection, which performs best with cartoon-style images. However, the model can be adapted for other styles with some experimentation.
### C**urrent Features** * **History Section**: Users can view all previously generated images along with the prompts used. This feature helps users keep track of their creations and revisit past work. * **Multiple Images:** Users can currently generate up to 4 images simultaneously from a single prompt. * **Pricing:** At present, generating a single image costs 3 cents. For example, running one prompt with 4 variations will cost 12 cents. ### A**dvanced Customization Options** **Inference Steps** * It controls the number of steps the model takes during image generation. * More Steps: Produces detailed and high-quality images but takes longer. Give more shadows, saturated colours and glossy effect. Works best for 3D character generations. * Fewer Steps: Quicker generation but may result in simpler natural outputs. Sometimes, images may appear simplistic or overly smooth. * Tip: Extreme values for inference steps or guidance scale may lead to overly saturated or distorted images. Start with middle ranges to balance detail and efficiency. **Seed Number (1-1000):** * It ensures consistency or introduces variation in image outputs. * Same Seed: Reproduces the exact image style every time. * Different Seeds: Generates diverse styles. * For instance, if you use the same seed (e.g., 75) and input the same prompt (e.g., "a elephant wearing sunglasses”), the resulting images will be identical for that seed. * Seed feature is particularly useful for: * Consistency: Maintaining a uniform style across multiple images, such as creating a series featuring a animal, specific objects etc. in the same artistic style. * Variety: By changing the seed, you can explore different styles for the same subject. **Guidance Scale:** * Adjusts how strictly the model follows the prompt. * Higher Scale: Aligns more closely with the prompt, potentially reducing creativity. * Lower Scale: Allows for more flexibility and imaginative results. * Extremes in guidance scale might lead to unusual or broken images, especially if the prompt includes elements outside the system’s training scope. **Comic Style Toggle**: * Activates the comic/cartoon effect. This is optimized for the model’s training style. ### How the Image Hub's Model Was Fine-Tuned? The foundation of the Image Hub is Stable Diffusion XL (SDXL), an open-source model recognized for its exceptional image generation quality and flexible commercial licensing. We enhanced the model’s capabilities for **comic-style outputs** through a process of fine-tuning using LoRA (Low-Rank Adaptation). This allowed us to adapt the model without altering its original weights, while retaining memory efficiency and cost-effectiveness. Using LoRA, we added extra layers (specialized learnable matrices) to the model that focused on the comic style, making it more efficient without using a lot of memory. The training was done using advanced NVIDIA L4 GPUs through Google Colab Pro, a cloud-based service. We used Hugging Face diffusers library and the Accelerate framework to manage resources. Through constant testing and improvements, the model was refined to generate high-quality comic-style images. ### 2. Image-to-Image Skillful AI’s image editor lets you make targeted changes to any picture using simple controls. Just select the area you want to alter, pick the edit type, tweak a few settings, and generate the result. 1. **Mask Mode** Defines which part of the image your edits will affect: * **User Provided:** Paint your own mask to pinpoint exactly where changes happen. * **Background:** AI detects and masks everything behind the main subject. * **Foreground:** AI finds the primary subject and masks the rest so you can edit around it. #### 2. Edit Mode Select how Skillful AI handles the masked area: * **Inpaint (Removal)**: Erase unwanted objects and fill the gap with matching detail. * **Inpaint (Insertion)**: Add new elements inside the mask based on your text. * **BGSwap**: Swap the background while keeping your subject unchanged. * **Outpaint**: Expand the canvas, and let the AI generate the surrounding context. #### 3. Basic Controls * **Brush Size**: Slide to change how much area each mask stroke covers. * **Prompt**: Describe what you want to add, remove, or modify (for example, “add a small cabin”). * **Things to Avoid (optional)**: List any items you don’t want (for example, “no text or logos”). #### 4. Advanced Settings * **Guidance Scale**: Higher values force closer adherence to your prompt; lower values allow more natural variation. * **Steps**: Number of passes the model takes. More steps sharpen details but take longer. * **Dilation**: Expands the mask slightly for smoother edges. * **Seed**: A fixed number guarantees the same result each time; random produces new variations.