Fuzzy Based Hybrid Focus Value Estimation for Multi Focus Image Fusion

Due to limited depth-of-field of digital single-lens reflex cameras, the scene content within a limited distance from the imaging plane remains in focus while other objects closer to or further away from the point of focus appear as blurred (out-of-focus) in the image. Multi-Focus Image Fusion can b...

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Bibliographic Details
Published inComputers, materials & continua Vol. 71; no. 1; pp. 735 - 752
Main Authors Aasim Qureshi, Muhammad, Asif, Muhammad, Fadzil Hassan, Mohd, Mustafa, Ghulam, Khurram Ehsan, Muhammad, Ali, Aasim, Sajid, Unaza
Format Journal Article
LanguageEnglish
Published Henderson Tech Science Press 2022
Subjects
Computer vision
Depth of field
Digital cameras
Digital imaging
Discrete Wavelet Transform
Experimentation
Feature extraction
Genetic algorithms
Hybrid systems
Image contrast
Image processing
Image reconstruction
Particle swarm optimization
Principal components analysis
Single lens reflex
Visibility
Wavelet transforms
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Summary:Due to limited depth-of-field of digital single-lens reflex cameras, the scene content within a limited distance from the imaging plane remains in focus while other objects closer to or further away from the point of focus appear as blurred (out-of-focus) in the image. Multi-Focus Image Fusion can be used to reconstruct a fully focused image from two or more partially focused images of the same scene. In this paper, a new Fuzzy Based Hybrid Focus Measure (FBHFM) for multi-focus image fusion has been proposed. Optimal block size is very critical step for multi-focus image fusion. Particle Swarm Optimization (PSO) algorithm has been used to find optimal size of the block of the images for extraction of focus measure features. After finding optimal blocks, three focus measures Sum of Modified Laplacian, Gray Level Variance and Contrast Visibility has been extracted and combined these focus measures by using intelligent fuzzy technique. Fuzzy based hybrid intelligent focus values were estimated using contrast visibility measure to generate focused image. Different sets of multi-focus images have been used in detailed experimentation and compared the results with state-of-the-art existing techniques such as Genetic Algorithm (GA), Principal Component Analysis (PCA), Laplacian Pyramid discrete wavelet transform (DWT), and aDWT for image fusion. It has been found that proposed method performs well as compare to existing methods.
ISSN:1546-2226
1546-2218
1546-2226
DOI:10.32604/cmc.2022.019691