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Image Upscaler

Advanced image upscaling using gradient profile enhancement for sharp, artifact-free results. Inspired by state-of-the-art research in super-resolution algorithms.

Client-side processing - no server uploads

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Drop your image here

or

Works best with photos, graphics, and artwork

How it works

  • • Bicubic Interpolation: High-quality 4×4 kernel resampling for smooth, accurate upscaling
  • • Gradient Field Enhancement: Analyzes and enhances image gradients using principles from gradient profile prior research
  • • Edge-Aware Sharpening: Adaptive sharpening that's stronger on edges and gentler on smooth areas using variance-based detection
  • • Artifact Suppression: Targeted bilateral filtering to eliminate ringing and jaggy artifacts while preserving edges
  • • Adaptive Processing: Algorithm parameters automatically adjust based on upscale factor for optimal results
  • • Client-Side Only: All processing happens in your browser - no server uploads needed

💡 Tip: This algorithm excels at preserving fine details and producing sharp edges without artifacts. Works best on photos, artwork, and graphics. Higher upscale factors (3x-4x) produce excellent results with longer processing time.

📚 Research-based: Inspired by "Image Super-Resolution using Gradient Profile Prior" (Sun et al., CVPR 2008) - a pioneering approach that analyzes gradient profiles in natural images to guide the upscaling process.