A no-reference image blur metric based on the cumulative probability of blur detection (CPBD).

This paper presents a no-reference image blur metric that is based on the study of human blur perception for varying contrast values. The metric utilizes a probabilistic model to estimate the probability of detecting blur at each edge in the image, and then the information is pooled by computing the cumulative probability of blur detection (CPBD). The performance of the metric is demonstrated by comparing it with existing no-reference sharpness/blurriness metrics for various publicly available image databases.