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Focus Measurement in Color Space for Shape From Focus Systems [PDF]
IEEE Access, 2021 Shape from Focus (SFF) has been studied extensively in computer vision for 3D shape and depth recovery. The first stage in SFF methods is to compute the focus value of every pixel by converting the colored images into gray scale and then apply the focus ...
Husna Mutahira +3 more
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Quantitative Evaluation of Focus Measure Operators in Optical Microscopy [PDF]
SensorsGiven the variety of focus measure operators, selecting an appropriate one based on scene requirements is critical. This study designs evaluation metrics based on the morphological characteristics of focus measure curves.
Weiying Piao +3 more
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Interest Points as a Focus Measure in Multi-Spectral Imaging [PDF]
Radioengineering, 2013 A novel multi-spectral focus measure that is based on algorithms for interest point detection, particularly on the FAST (Features from Accelerated Segment Test), Fast Hessian and Harris-Laplace detector, is described in this paper.
M. Zukal, J. Mekyska, P. Cika, Z. Smekal
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Reliability measure for shape-from-focus [PDF]
Image and Vision Computing, 2013 Shape-from-focus (SFF) is a passive technique widely used in image processing for obtaining depth-maps. This technique is attractive since it only requires a single monocular camera with focus control, thus avoiding correspondence problems typically found in stereo, as well as more expensive capturing devices.
Pertuz, Said +2 more
openaire +4 more sources
Positive-Operator Valued Measure (POVM) Quantization
Axioms, 2014 We present a general formalism for giving a measure space paired with a separable Hilbert space a quantum version based on a normalized positive operator-valued measure.
Jean Pierre Gazeau, Barbara Heller
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Directional Ring Difference Filter for Robust Shape-from-Focus
Mathematics, 2023 In the shape-from-focus (SFF) method, the quality of the 3D shape generated relies heavily on the focus measure operator (FM) used. Unfortunately, most FMs are sensitive to noise and provide inaccurate depth maps.
Khurram Ashfaq, Muhammad Tariq Mahmood
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Enhancing Focus Volume through Perceptual Focus Factor in Shape-from-Focus
Mathematics, 2023 Shape From Focus (SFF) reconstructs a scene’s shape using a series of images with varied focus settings. However, the effectiveness of SFF largely depends on the Focus Measure (FM) used, which is prone to noise-induced inaccuracies in focus values.
Khurram Ashfaq, Muhammad Tariq Mahmood
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Refocusing Metric of Light Field Image Using Region-Adaptive Multi-Scale Focus Measure
IEEE Access, 2022 Compared with conventional photography, the newly emerging light field image capturing technique has dramatically extended potential capabilities of post processing. Among the new capabilities, refocusing is of the most interest.
Chun Zhao, Byeungwoo Jeon
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Multi‐focus image fusion evaluation based on jointly sparse representation and atom focus measure
IET Image Processing, 2021 Multi‐focus image fusion (MFIF) tries to combine images with different in‐focus regions and get a composite image that is in focus everywhere. Although many new MFIF algorithms based on various new representation models have been proposed in recent years,
Yanxiang Hu +3 more
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Tangent Similarity Measure Based MADM-Strategy under SVPNS-Environment [PDF]
Neutrosophic Sets and Systems, 2021 The main focus of this article is to procure a new similarity measure namely tangent similarity measure for single valued pentapartitioned neutrosophic sets (SVPNS).
Suman Das +2 more
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