Perceptual Evaluation for Multi-Exposure Image Fusion of Dynamic Scenes

It propose a simple yet effective Structural Patch Decomposition with Gaussian Filter (SPDGF) approach for multi-exposure image fusion (MEF) that is robust to ghosting effect. It decomposes an image patch into three conceptually independent components: signal strength, signal structure, and mean intensity. Upon fusing these three components separately then reconstruct a desired patch and place it back into the fused image. This novel approach benefits MEF in many aspects. First, as opposed to most pixel-wise MEF methods, the proposed algorithm does not require post-processing steps to improve visual quality or to reduce spatial artifacts. Second, it handles RGB color channels jointly and thus produces fused images with more vivid color appearance. Third and most importantly, the direction of the signal structure component in the patch vector space provides ideal information for ghost removal. It allows us to reliably and efficiently reject inconsistent object motions then a chosen reference image without performing computationally expensive motion estimation. Now compare the proposed algorithm with SPD-MEF methods on different images (with camera and object motion). Extensive experimental results demonstrate that the proposed algorithm not only outperforms previous MEF algorithms on static scenes but also consistently produces high quality fused images with little ghosting artifacts for dynamic scenes. Moreover, it maintains a lower computational cost compared with state-of-the-art MEF de-ghosting schemes.

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Multi-exposure image fusion for dynamic scenes without ghost effect

2015 Twenty First National Conference on Communications (NCC) ◽

10.1109/ncc.2015.7084823 ◽

2015 ◽

Cited By ~ 3

Author(s):

Ashish V. Vanmali ◽

Samrudha G. Kelkar ◽

Vikram M. Gadre

Keyword(s):

Image Fusion ◽

Dynamic Scenes

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Perceptual evaluation of different image fusion schemes

Displays ◽

10.1016/s0141-9382(02)00069-0 ◽

2003 ◽

Vol 24 (1) ◽

pp. 25-37 ◽

Cited By ~ 109

Author(s):

Alexander Toet ◽

Eric M Franken

Keyword(s):

Image Fusion ◽

Perceptual Evaluation

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Effects of a 6-Week Straw Phonation in Water Exercise Program on the Aging Voice

Journal of Speech Language and Hearing Research ◽

10.1044/2020_jslhr-19-00124 ◽

2020 ◽

Vol 63 (4) ◽

pp. 1018-1032

Author(s):

Chia-Hsin Wu ◽

Roger W. Chan

Keyword(s):

Acoustic Analysis ◽

Vocal Tract ◽

Exercise Program ◽

Analysis Of Covariance ◽

Elderly Subjects ◽

Control Group ◽

Perceptual Evaluation ◽

Positive Effects ◽

Aging Voice ◽

Before And After

Purpose Semi-occluded vocal tract (SOVT) exercises with tubes or straws have been widely used for a variety of voice disorders. Yet, the effects of longer periods of SOVT exercises (lasting for weeks) on the aging voice are not well understood. This study investigated the effects of a 6-week straw phonation in water (SPW) exercise program. Method Thirty-seven elderly subjects with self-perceived voice problems were assigned into two groups: (a) SPW exercises with six weekly sessions and home practice (experimental group) and (b) vocal hygiene education (control group). Before and after intervention (2 weeks after the completion of the exercise program), acoustic analysis, auditory–perceptual evaluation, and self-assessment of vocal impairment were conducted. Results Analysis of covariance revealed significant differences between the two groups in smoothed cepstral peak prominence measures, harmonics-to-noise ratio, the auditory–perceptual parameter of breathiness, and Voice Handicap Index-10 scores postintervention. No significant differences between the two groups were found for other measures. Conclusions Our results supported the positive effects of SOVT exercises for the aging voice, with a 6-week SPW exercise program being a clinical option. Future studies should involve long-term follow-up and additional outcome measures to better understand the efficacy of SOVT exercises, particularly SPW exercises, for the aging voice.

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