Crisp Text-to-Image Generation: How Ovis-Image 7B Delivers 20B-Level Performance on One GPU
6 hours ago 高效码农Ovis-Image: A 7-Billion-Parameter Text-to-Image Model That Punches at 20-Billion Scale—While Running on One GPU “ What makes a compact 7 B model able to render crisp, bilingual, layout-heavy text previously dominated by 20 B+ giants, and how can you deploy it today? TL;DR (the 30-second take) Architecture: 2 B multimodal Ovis 2.5 encoder frozen for alignment, 7 B MMDiT diffusion decoder trained from scratch, FLUX.1-schnell VAE stays frozen—10 B total, <24 GB VRAM. Training: four-stage pipeline (pre-train → instruction fine-tune → DPO preference → GRPO text-specialist) steadily improves word accuracy from 87 % → 92 %. Benchmarks: leads CVTG-2K English …
ViBT Image Generation: How Brownian Bridge Models Achieve 4× Faster AI Inference
2 days ago 高效码农ViBT: Vision Bridge Transformer at Scale – A Practical Deep Dive What is ViBT and why does it achieve up to 4× faster inference than token-heavy conditional diffusion models while maintaining comparable quality? ViBT is the first large-scale realization of Brownian Bridge generative models for vision tasks. Instead of the classic “noise-to-data” paradigm, it directly learns stochastic trajectories from a structured source (image/video) to a structured target, eliminating most conditioning tokens and dramatically reducing compute. Figure: Example results of ViBT across instruction-based editing, stylization, colorization, and frame interpolation. Why the Noise-to-Data Paradigm Feels Wrong for Conditional Generation Most modern image …
Decoupled DMD: How 8-Step Diffusion Outperforms 100-Step Models Without Extra Parameters
7 days ago 高效码农Decoupled DMD: Why 8-Step Diffusion Can Outperform 100-Step Teachers Without Extra Parameters Central question: How can a student network with no additional parameters generate images that look better than its 100-step teacher in only 8 forward passes? Short answer: By decomposing the training objective into two cooperative mechanisms—CFG Augmentation (the engine) and Distribution Matching (the seat-belt)—and giving each its own noise schedule. 1. The Misleading Success of DMD Core question: If DMD was supposed to match distributions, why does it only work when you add an asymmetric CFG term that breaks the theory? Short answer: Theory describes the DM term; …
Why Fourier Space Reveals the Hidden Truth About Diffusion Models’ Detail Generation
6 months ago 高效码农Fourier Space Perspective on Diffusion Models: Why High-Frequency Detail Generation Matters 1. Fundamental Principles of Diffusion Models Diffusion models have revolutionized generative AI across domains like image synthesis, video generation, and protein structure prediction. These models operate through two key phases: 1.1 Standard DDPM Workflow Forward Process (Noise Addition): x_t = √(ᾱ_t)x_0 + √(1-ᾱ_t)ε Progressively adds isotropic Gaussian noise Controlled by decreasing noise schedule ᾱ_t Reverse Process (Denoising): Starts from pure noise (x_T ∼ N(0,I)) Uses U-Net to iteratively predict clean data 2. Key Insights from Fourier Analysis Transitioning to Fourier space reveals critical frequency-dependent behaviors: 2.1 Spectral Properties of Natural Data Data Type …
Image Stylization Breakthrough: How OmniConsistency Solves Diffusion Model Challenges
6 months ago 高效码农Mastering Image Stylization: How OmniConsistency Solves Consistency Challenges in Diffusion Models Understanding the Evolution of Image Stylization In the rapidly evolving landscape of digital art and AI-driven creativity, image stylization has emerged as a transformative technology. From converting ordinary photographs into oil paintings to transforming real-world scenes into anime-style visuals, this field has seen remarkable advancements. However, the journey hasn’t been without challenges. Two critical issues have persisted in image stylization: maintaining consistent styling across complex scenes and preventing style degradation during iterative editing processes. Recent breakthroughs in diffusion models have significantly improved image generation capabilities. These models learn to …
MMaDA: How This Unified Multimodal Diffusion Model Transforms AI Generation?
6 months ago 高效码农MMaDA: A Breakthrough in Unified Multimodal Diffusion Models 1. What Is MMaDA? MMaDA (Multimodal Large Diffusion Language Models) represents a groundbreaking family of foundation models that unify text reasoning, cross-modal understanding, and text-to-image generation through an innovative diffusion architecture. Unlike traditional single-modal AI systems, its core innovation lies in integrating diverse modalities (text, images, etc.) into a shared probabilistic framework—a design philosophy its creators term “modality-agnostic diffusion.” 2. The Three Technical Pillars of MMaDA 2.1 Unified Diffusion Architecture Traditional multimodal models often adopt modular designs (text encoder + vision encoder + fusion modules). MMaDA revolutionizes this paradigm by: Processing all …