SPECKLE DENOISING IN IMAGES USING 3D FILTER BASED ON MAXIMUM A POSTERIORI PROBABILITY ESTIMATOR
Published In: 3RD INTERNATIONAL E-CONFERENCE ON ENGINEERING, TECHNOLOGY AND MANAGEMENT
Author(s): G. ARANDA-BOJORGES , R. REYES-REYES , V. PONOMARYOV
Abstract: Image denoising is considered as an effective initial processing step in different sophisticated imaging applications. Over the years, numerous studies have been conducted filtering of different kinds of noise. The Block Matching with 3D filtering added a new dimension to the study of denoising techniques. The main motive of this work is to establish a novel denoising method for multiplicative noise (speckle), with the ideology of the sparse representation in filtering via Maximum a Posteriori (MAP) estimator approach that is used in 3D array performed by grouping similar patches. Experimental results justified a good performance of novel framework that appears to demonstrate better denoising performance against state-of-art algorithms according objective criteria (PSNR, SSIM, EPI) values as well as subjective visual perception.
- Publication Date: 27-Sep-2020
- DOI: 10.15224/978-1-63248-190-0-13
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EFFECT OF INTER-LAYER PLACEMENT DELAY ON PERMEABILITY PROPERTIES OF ROLLER COMPACTED CONCRETE
Published In: 3RD INTERNATIONAL E-CONFERENCE ON ENGINEERING, TECHNOLOGY AND MANAGEMENT
Author(s): ALI-MARDANI AGHABAGLOU , KAMBIZ RAMYAR , SULTAN HUSEIN BAYQRA
Abstract: Roller compacted concretes are generally applied in layers. These layers are known as the weakest part of the structures. One of the most important factors affecting the exact interlocking of the layers is the prolongation of the placement time between the layers. In this study, the effect of delayed placement of layers on the permeability properties of RCC mixtures was investigated. For this purpose, CEM 1 42.5 R type Portland cement and crushed limestone aggregate having three different particle sizes (0-5, 5-12, 12-22 mm) were used for preparing of the mixtures. The 15 cm cube specimens were placed as two layers and compressed. After the first layer was placed and compacted, the second layer was placed with a delay of 0, 60, 120, and 180 minutes. The prepared specimens were kept in the mold for 24 hours, then removed and subjected to water curing for 28 days. The 28-day Depth of penetration of water under pressure of the mixtures was performed according to the EN 12390-8 Standard. T
- Publication Date: 27-Sep-2020
- DOI: 10.15224/978-1-63248-190-0-14
- Views: 0
- Downloads: 0