Conceptual model of human blur perception

Environmental tranquility: A conceptual framework and urban ‎architectural features

Stressful life and reduced well-being have always been an issue of lifestyle in modern society. Constructing a multidisciplinary conceptual framework of environmental tranquility and quality of life is required for the field of architectural development, improved environmental quality, and enhanced human well-being. This paper reviews the main concepts of tranquility, environmental quality, and...

Users’ Perception and Evaluation of Environmental Functions: Developing a Conceptual Model

A No-Reference Image Blur Metric

This paper presents a no-reference image quality measure, targeted towards blur distortions based on the study of human blur perception for varying contrast values. Utilizing sensitivity of human blur perception at different contrasts, a probabilistic framework is developed. This framework is used to estimate the probability of detecting blur at each edge in an image. The blur perception inform...

The use of image blur as a depth cue.

Images of three-dimensional scenes inevitably contain regions that are spatially blurred by differing amounts, owing to depth-of-focus limitations in the imaging apparatus. Recent perceptual data indicate that this blur variation acts as an effective cue to depth: if one image region contains sharply focused texture, and another contains blurred texture, then the two regions may be perceived at...

Added luminance ramp alters perceived edge blur and contrast: A critical test for derivative-based models of edge coding

In many models of edge analysis in biological vision, the initial stage is a linear 2nd derivative operation. Such models predict that adding a linear luminance ramp to an edge will have no effect on the edge's appearance, since the ramp has no effect on the 2nd derivative. Our experiments did not support this prediction: adding a negative-going ramp to a positive-going edge (or vice-versa) gre...