Just-Noticeable-Difference Based Edge Map Quality Measure

TL;DR

This paper introduces a new edge map quality measure based on human visual perception, specifically the Just-Noticeable-Difference, which improves correlation with subjective quality assessments over traditional distance-based methods.

Contribution

The paper proposes a novel JND-based edge map quality measure that incorporates perceptual features to better align with human visual judgment.

Findings

JND-based measure outperforms existing distance-based measures in subjective evaluation.

Experimental results validate the effectiveness of the proposed perceptual measure.

Designed a constant stimulus experiment to quantify JND for edge quality assessment.

Abstract

The performance of an edge detector can be improved when assisted with an effective edge map quality measure. Several evaluation methods have been proposed resulting in different performance score for the same candidate edge map. However, an effective measure is the one that can be automated and which correlates with human judgement perceived quality of the edge map. Distance-based edge map measures are widely used for assessment of edge map quality. These methods consider distance and statistical properties of edge pixels to estimate a performance score. The existing methods can be automated; however, they lack perceptual features. This paper presents edge map quality measure based on Just-Noticeable-Difference (JND) feature of human visual system, to compensate the shortcomings of distance-based edge measures. For this purpose, we have designed constant stimulus experiment to measure the JND value for two spatial alternative. Experimental results show that JND based distance calculation outperforms existing distance-based measures according to subjective evaluation.