Updated Readme
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@@ -80,6 +80,34 @@ Professional HDR (High Dynamic Range) processing nodes for ComfyUI featuring our
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A complete example workflow for ComfyUI is provided in the `/workflow` directory. This demonstrates a good setup for HDR processing using our Radiance Fusion algorithm.
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## 🎨 AI-Generated HDR from Single Images
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We've developed a complete workflow for creating HDR images from a single source image using **FLUX.1 Kontext exposure control LoRAs**:
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### 🚀 **The Complete Pipeline:**
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1. **Start with any image** - Generated from any model or captured photo
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2. **Generate exposure variants** - Use our trained LoRAs to create EV-4, EV-2, EV0, EV+2, EV+4 versions
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3. **Process with Radiance Fusion** - Feed the synthetic exposures into our HDR nodes
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4. **Get professional HDR** - Output true 32-bit HDR images with enhanced dynamic range
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### 📦 **Exposure Control LoRAs:**
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Our custom-trained LoRAs for **FLUX.1 Kontext (dev)** can generate different exposure levels from a single image:
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- **Available LoRAs**: `ev-4`, `ev-2`, `ev+2`, `ev+4` (with corresponding trigger words)
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- **Easy to use**: Simply add the trigger word and adjust LoRA weight
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- **High quality**: Trained specifically for exposure control
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- **Download**: [Flux-Kontext-exposure-control-LoRAs](https://huggingface.co/Sumitc13/Flux-Kontext-exposure-control-LoRAs)
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### 💡 **Workflow Benefits:**
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- ✅ **Single image input** - No need for multiple captures or bracketing
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- ✅ **AI-generated exposures** - Perfect synthetic exposure variants
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- ✅ **Professional HDR output** - True HDR with our Radiance Fusion processing
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- ✅ **Complete automation** - Generate and process in one workflow
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- ✅ **Creative freedom** - Work with any generated or captured image
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## 🎨 Usage
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### 🚨 **CRITICAL: Proper HDR Workflow**
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@@ -202,18 +230,34 @@ The nodes feature our **Radiance Fusion Algorithm** as the default, plus traditi
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## 📸 Best Practices
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### For Capturing Source Images:
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### For Capturing Source Images (Traditional Method):
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- Use a **tripod** for perfect alignment
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- Keep the **same white balance** across all exposures
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- Use **manual focus** to prevent focus shifts
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- Capture in **RAW format** when possible
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- Use **exposure compensation** or **manual mode**
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### For AI-Generated Exposures (Modern Workflow):
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- Start with **any single image** (generated or captured)
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- Use our **FLUX.1 Kontext LoRAs** to create exposure variants
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- Download LoRAs: [Flux-Kontext-exposure-control-LoRAs](https://huggingface.co/Sumitc13/Flux-Kontext-exposure-control-LoRAs)
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- Generate **ev-4, ev-2, ev+2, ev+4** variants using trigger words
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- **Perfect alignment** - AI ensures consistent composition
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- **No bracketing required** - Generate all exposures from one source
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### EV (Exposure Value) Guidelines:
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#### Traditional Capture:
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- **3-Stop**: +2, 0, -2 EV (4x range)
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- **5-Stop**: +4, +2, 0, -2, -4 EV (16x range)
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- Adjust `exposure_step` parameter if using different increments
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#### AI-Generated (Using Our LoRAs):
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- **Base image**: Your source image (acts as EV 0)
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- **Generate variants**: Use `ev-4`, `ev-2`, `ev+2`, `ev+4` LoRAs with trigger words
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- **Perfect range**: Covers full 8-stop dynamic range
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- **Consistent quality**: AI ensures proper exposure relationships
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### Algorithm Selection Guide:
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#### 🎬 **For VFX/Post-Production:**
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@@ -330,6 +374,7 @@ luminance-stack-processor/
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- **Debevec, P. E., & Malik, J.** (1997). Recovering high dynamic range radiance maps from photographs. *ACM SIGGRAPH Computer Graphics*, 31(Annual Conference Series), 367-378.
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- **OpenCV HDR Documentation**: https://docs.opencv.org/4.x/d3/db7/tutorial_hdr_imaging.html
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- **ComfyUI Custom Node Guidelines**: https://docs.comfy.org/custom-nodes/
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- **Our FLUX.1 Kontext Exposure LoRAs**: [Flux-Kontext-exposure-control-LoRAs](https://huggingface.co/Sumitc13/Flux-Kontext-exposure-control-LoRAs)
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- **Semantic Versioning**: https://semver.org/
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## 📜 License
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