Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Spatial-frequency-based metric for image superresolution

Not Accessible

Your library or personal account may give you access

Abstract

The image processing technique known as superresolution (SR) has the potential to allow engineers to specify lower resolution and, therefore, less expensive cameras for a given task by enhancing the base camera’s resolution. This is especially true in the remote detection and classification of objects in the environment, such as aircraft or human faces. Performing each of these tasks requires a minimum image “sharpness” which is quantified by a maximum resolvable spatial frequency, which is, in turn, a function of the camera optics, pixel sampling density, and signal-to-noise ratio. Much of the existing SR literature focuses on SR performance metrics for candidate algorithms, such as perceived image quality or peak SNR. These metrics can be misleading because they also credit deblurring and/or denoising in addition to true SR. In this paper, we propose a new, task-based metric where the performance of an SR algorithm is, instead, directly tied to the probability of successfully detecting critical spatial frequencies within the scene.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Remote classification from an airborne camera using image super-resolution

Matthew Woods and Aggelos Katsaggelos
J. Opt. Soc. Am. A 34(2) 203-215 (2017)

Statistical performance modeling for superresolution: a discrete data-continuous reconstruction framework

Frédéric Champagnat, Guy Le Besnerais, and Caroline Kulcsár
J. Opt. Soc. Am. A 26(7) 1730-1746 (2009)

Metrics and statistics of frequency of occurrence of metamerism in consumer cameras for natural scenes

Dilip K. Prasad and Looi Wenhe
J. Opt. Soc. Am. A 32(7) 1390-1402 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (25)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (34)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved