Filters








1,749,045 Hits in 4.2 sec

Context-Based Automatic Local Image Enhancement [chapter]

Sung Ju Hwang, Ashish Kapoor, Sing Bing Kang
2012 Lecture Notes in Computer Science  
Unlike previous techniques, where global statistics of the image are used to determine enhancement operation, our method is local and relies on local scene descriptors and context in addition to high-level  ...  Our experiments indicate that such context-based local enhancement is better than global enhancement schemes.  ...  For the expert enhanced images, the mapping is one-to-one, while our enhanced images are not, demonstrating local enhancement.  ... 
doi:10.1007/978-3-642-33718-5_41 fatcat:xtb7jm244rapbfnggyjdzambca

Local detail enhanced hyperspectral image visualization

Jialu Fang, Yuntao Qian
2015 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)  
In order to enhance the spatial distinction of different scene objects, Laplacian pyramid is used to draw the locally details from the original HSI, and embed it into the color image.  ...  A new method for hyperspectral image (HSI) visualization is proposed in this paper, which emphasizes on pairwise distance preservation and detail enhancement. It includes two sequential steps.  ...  As human visual system is sensitive to the visual discontinuous regions, the local detail enhancement is required to improve the visualization quality.  ... 
doi:10.1109/igarss.2015.7325960 dblp:conf/igarss/FangQ15 fatcat:br7v7oyvlfhqbb7k6shnwr5sl4

Enhancements for local feature based image classification

T. Kolsch, D. Keysers, H. Ney, R. Paredes
2004 Proceedings of the 17th International Conference on Pattern Recognition, 2004. ICPR 2004.  
Using local features with nearest neighbor search and direct voting obtains excellent results for various image classification tasks.  ...  This shows that the important aspect of the framework is the decomposition of the training images into sets of local features for each class.  ...  Here we give a short overview of this method followed by the proposed enhancements. Local features are square sub images with a size of ¤ ¦ ¥ § ¤ pixels from an image.  ... 
doi:10.1109/icpr.2004.1334070 dblp:conf/icpr/KolschKNP04 fatcat:k4h35dxzpnbsbpycqdcwf2m2me

Local adaptive contrast enhancement for color images

Judith Dijk, Richard J. M. den Hollander, John G. M. Schavemaker, Klamer Schutte, Zia-ur Rahman, Stephen E. Reichenbach, Mark A. Neifeld
2007 Visual Information Processing XVI  
For grey value images such as IR imagery, algorithms have been developed in which the local contrast of the image is enhanced using local adaptive techniques.  ...  In such applications, enhanced local contrast in color images leads to more effective monitoring.  ...  LITERATURE Local contrast enhancement in grey value images To enhance the contrast in an image several methods are described in literature.  ... 
doi:10.1117/12.716886 dblp:conf/spieVIP/DijkHSS07 fatcat:kmya4vz4rvei3dlnsdoaqk5fpy

Image enhancement using local intensity distribution equalization

Sanparith Marukatat
2015 EURASIP Journal on Image and Video Processing  
This paper proposes a local intensity distribution equalization (LIDE) method for image enhancement.  ...  LIDE applies the idea of histogram equalization to parametric model in order to enhance an image using local information.  ...  High entropy does not imply better local enhancement of the image. Indeed, to measure the local [29, 31] .  ... 
doi:10.1186/s13640-015-0085-2 fatcat:caq6p2wvznaibobzn37jzzhh3q

Local Enhancement Of Car Image For License Plate Detection

Vahid Abolghasemi, Alireza Ahmadyfard
2007 Zenodo  
In [4] Zheng et al used local variance of image as a criterion for local enhancement of plate region.  ...  In the fist stage of the algorithm we locally enhance image at the plate region.  ... 
doi:10.5281/zenodo.40651 fatcat:oq2rpuri6bd6fopxyl7ivftjte

Locally Enhanced Image Quality with Tunable Hybrid Metasurfaces [article]

Alena V. Shchelokova, Alexey P. Slobozhanyuk, Irina V. Melchakova, Stanislav B. Glybovski, Andrew G. Webb, Yuri S. Kivshar, Pavel A. Belov
2017 arXiv   pre-print
Here, we suggest and demonstrate experimentally a novel tunable metasurface capable to enhance significantly the local image quality in magnetic resonance imaging (MRI).  ...  By maximizing a coupling between metasurface eigenmodes and transmitted and received fields in the MRI system, we enhance the device sensitivity that results in a substantial improvement of the image quality  ...  The metasurface improves SNR, so the image quality should also be enhanced.  ... 
arXiv:1712.02039v1 fatcat:7zuky63hyrc6hohbcujpbnvl7y

DeepLPF: Deep Local Parametric Filters for Image Enhancement [article]

Sean Moran, Pierre Marza, Steven McDonagh, Sarah Parisot, Gregory Slabaugh
2020 arXiv   pre-print
These highly expressive tools enable a diverse set of local image enhancements. However, their use can be time consuming, and requires artistic capability.  ...  State-of-the-art automated image enhancement approaches typically focus on learning pixel-level or global enhancements.  ...  Local image enhancement: Aubry et al. [1] propose fast local Laplacian filtering for enhancing image detail. Hwang et al.  ... 
arXiv:2003.13985v1 fatcat:5wvac7k65rf4hepts4gmyiarji

LQM: Localized Quality Measure for Fingerprint Image Enhancement

Karen Panetta, Shreyas Kamath K.M, Srijith Rajeev, Sos S Agaian
2019 IEEE Access  
This paper offers a novel localized quality measure (LQM) to evaluate the quality of fingerprint images, and a genetic localized quality measure enhancement (LQME) algorithm, which is tailored to iteratively  ...  enhance poor-quality fingerprint images.  ...  Unlike, existing image enhancement techniques which rely on parameters, some of which may not be relevant to all forms of fingerprint images, the presented Fingerprint Localized Quality Measure Enhancement  ... 
doi:10.1109/access.2019.2931980 fatcat:yvj5yrqoe5fupmsxmcnb46skt4

Local depth image enhancement scheme for view synthesis

Yongzhe Wang, Dong Tian, Anthony Vetro
2012 2012 19th IEEE International Conference on Image Processing  
In order to reduce the errors and suppress the noise in the depth map, a local depth image enhancement technique is proposed that leverages trellis-based optimization techniques.  ...  In order to reduce the errors and suppress the noise in the depth map, a local depth image enhancement technique is proposed that leverages trellis-based optimization techniques.  ...  In this paper, we propose a local depth image enhancement technique which references the color information of the stereo image pair.  ... 
doi:10.1109/icip.2012.6467462 dblp:conf/icip/WangTV12 fatcat:o2bowzmkxnfzzj7zvab5vud5a4

Effective Local Backscattering Estimation for Underwater Image Enhancement

Codruta O. AncutiT, Cosmin Ancuti, Horia BaltaT
2018 OCEANS 2018 MTS/IEEE Charleston  
The qualitative evaluation demonstrates the effectiveness of our approach compared with the recent underwater enhancing techniques.  ...  In this paper we introduce a novel solution that estimates locally the backscattered light.  ...  , requires reliable image and video enhancement techniques.  ... 
doi:10.1109/oceans.2018.8604731 fatcat:rvnga6qpezf7vell3nuayfeqju

Depth image enhancement using local tangent plane approximations

Kiyoshi Matsuo, Yoshimitsu Aoki
2015 2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
In our method, accurate depth image enhancement is achieved by using the local geometries approximated by the local tangents.  ...  This paper describes a depth image enhancement method for consumer RGB-D cameras. Most existing methods use the pixel-coordinates of the aligned color image.  ...  Conclusion In this paper, we proposed a depth image enhancement method using local tangent planes as local linear approximations.  ... 
doi:10.1109/cvpr.2015.7298980 dblp:conf/cvpr/MatsuoA15 fatcat:l5727hw4wfcl7gnxn2daheg4xq

Greedy Algorithm for Local Contrast Enhancement of Images [chapter]

Kartic Subr, Aditi Majumder, Sandy Irani
2005 Lecture Notes in Computer Science  
We demonstrate our method on both gray and color images and compare it with other existing global and local contrast enhancement techniques.  ...  to strict constraints on the local gradients and the color range of the image.  ...  We formulate the contrast enhancement problem as an optimization problem that tries to maximize the average local contrast of the image in a controlled fashion without saturation of colors.  ... 
doi:10.1007/11553595_21 fatcat:ihsnxi2htjhm7kf7qrh2lhw4xy

Infrared image detail enhancement based on local adaptive gamma correction

Bin Liu Bin Liu, Xia Wang Xia Wang, Weiqi Jin Weiqi Jin, Yan Chen Yan Chen, Chongliang Liu Chongliang Liu, Xiu Liu Xiu Liu
2012 Chinese Optics Letters (COL)  
An infrared image detail enhancement method based on local adaptive gamma correction (LAGC) is proposed.  ...  The local adaptive gamma values are designed based on the Weber curve to enhance effectively the image details.  ...  Thus, local details cannot be effectively enhanced at the same time.  ... 
doi:10.3788/col201210.021002 fatcat:4j32z4za75erzpwtf2yytafv6e

Enhanced Fuzzy-based Local Information Algorithm for Sonar Image Segmentation

Avi Abu, Roee Diamant
2021 Zenodo  
We present our enhanced fuzzy- based with Kernel metric (EnFK) algorithm for the segmentation of sonar images which, in an attempt to improve segmentation accuracy, introduces two new fuzzy terms of local  ...  Our algorithm includes a preliminary de-noising algorithm which, together with the original image, feeds into the segmentation procedure to avoid trapping to local minima and to improve convergence.  ...  ENHANCED FUZZY-BASED IMAGE SEGMENTATION The uniqueness of the proposed sonar image segmentation method lies in the introduction of two new terms: the local second moment term, and the between-cluster term  ... 
doi:10.5281/zenodo.4983070 fatcat:lp355hg555atdh65qvxny3g4my
« Previous Showing results 1 — 15 out of 1,749,045 results