Xianyu Technology
Jun 30, 2018 · Artificial Intelligence
No-Reference Image Sharpness Assessment Based on Strong Edge Validity Statistics
The paper proposes a no‑reference image sharpness metric that computes strong‑edge validity statistics—ratio of maximum directional gradient sum to squared strong‑edge count—across image blocks, classifies them into grades, and effectively handles defocus and motion blur for applications such as video thumbnail selection.
Computer VisionNo-Referenceedge statistics
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