Filters








45,382 Hits in 5.7 sec

Document Image Quality Assessment: A Brief Survey

Peng Ye, David Doermann
2013 2013 12th International Conference on Document Analysis and Recognition  
This paper provides a brief survey of research on the topic of document image quality assessment. We first present a detailed analysis of the types and sources of document degradations.  ...  We then review techniques for document image degradation modeling. Finally, we discuss objective measures and subjective experiments that are used to characterize document image quality.  ...  Predicting human perception The problem of predicting document image quality with respect to human perception is well motivated in many applications where the receiver of a document image is human.  ... 
doi:10.1109/icdar.2013.148 dblp:conf/icdar/YeD13 fatcat:f7imuvlkozdr5ha4qdyqcuv37e

"Quality" vs. "Readability" in Document Images: Statistical Analysis of Human Perception

Alireza Alaei, Romain Raveaux, Donatello Conte, Bela Stantic
2018 2018 13th IAPR International Workshop on Document Analysis Systems (DAS)  
In document images, the level of quality and the degree of readability may have a relation / correlation considering human perception.  ...  These two terms, however, have different meanings implying two different perspectives of looking at document images by human being.  ...  Humans are also more tolerant in relation to noise and document image degradation [22] .  ... 
doi:10.1109/das.2018.42 dblp:conf/das/AlaeiRCS18 fatcat:rhcdcbeqfzffrnvslfxfhsgzru

Page 499 of Behavior Research Methods Vol. 34, Issue 4 [page]

2002 Behavior Research Methods  
Foveal load affects the functional field of view. Human Performance, 2 . 1-28. Yang, J.,Coia.T.,& Miller, M. (2001). Subjective evaluation of retinal- dependent image degradations.  ...  Taken together, the windowing effect and previous findings showing shorter saccade lengths and longer search times in GCMRDs with perceptible peripheral image degradation (Loschky & McConkie, 2000, 2002  ... 

Distance-Reciprocal Distortion Measure for Binary Document Images

H. Lu, A.C. Kot, Y.Q. Shi
2004 IEEE Signal Processing Letters  
Our results show that the proposed distortion measure matches well with subjective evaluation found on human visual perception.  ...  However, traditional objective distortion measures cannot describe the distortion in binary images well to have a good match with human visual perception.  ...  The distance between pixels is found to play an important role in human perception of distortions in binary document images.  ... 
doi:10.1109/lsp.2003.821748 fatcat:m2tpqkwjqjcdlme7xzr2vqha4a

Perceptual Quality Measure of Screen Content Images

Ms.S., Chinmaya, Mr. R. Balaji
2017 International Journal Of Engineering And Computer Science  
In object quality analysis a weighting strategy method is used to correlate quality of the two regions (text and pictorial) of SCI and provide quality for the entire image.  ...  Research on Screen Content Images (SCIs) has become important as they are used frequently in multi-device communication applications.  ...  Most of the document images suffer from degradations related to the environment, e.g., stains, paper aging, carbon copy effect and reader annotations.  ... 
doi:10.18535/ijecs/v6i3.24 fatcat:ob3knkmh4zgr5ecosxwzyxhd2y

Neighborhood Window Pixeling for Document Image Enhancement

Kirti S., J. V.
2016 International Journal of Computer Applications  
Many algorithms have been proposed for the document image binarization from past decades and still working on degraded document image is under process to generate more capable, noiseless and clear document  ...  Image segmentation algorithm is used to generate the cleared binarized document image and single pixel artifacts removal algorithm is used to connect break edges due to the degradation.  ...  INTRODUCTION Historical documents are of nice interest to students in the social sciences and humanities.  ... 
doi:10.5120/ijca2016910925 fatcat:lhqbm4ce2jfvliwki4vbavrcfe

Analysis of SSIM based Quality Assessment across Color Channels of Images

T. Chandrakanth, B. Sandhya
2015 International Journal of System Dynamics Applications  
During the last two decades, efforts have been put to design such an image quality metric which can be calculated simply but can accurately reflect subjective quality of human perception.  ...  In this paper, the authors evaluated the quality assessment of color images using SSIM (structural similarity index) metric across various color spaces.  ...  One of the essential requirements of an image quality measure is that it should have strong correlation to the human perception.  ... 
doi:10.4018/ijsda.2015070102 fatcat:rs2j3fkw2vgarlprxmvyoorsmi

A Dataset for Quality Assessment of Camera Captured Document Images [chapter]

Jayant Kumar, Peng Ye, David Doermann
2014 Lecture Notes in Computer Science  
For each image we obtained the character level OCR accuracy. Our dataset can be used to evaluate methods for predicting OCR quality of captured documents as well as enhancements.  ...  In this work, we present a dataset of camera captured document images containing varying levels of focal-blur introduced manually during capture.  ...  ACKNOWLEDGMENT We would like to thank Steven Dang for running Tesseract on our images.  ... 
doi:10.1007/978-3-319-05167-3_9 fatcat:z6ckohlj2bgzpmm65r4nms4klm

AN EFFECTIVE AND ROBUST TECHNIQUE FOR THE BINARIZATION OF DEGRADED DOCUMENT IMAGES

Prashali Chaudhary .
2014 International Journal of Research in Engineering and Technology  
Segmentation of text from badly degraded document images is a challenging task because of the high inter/intra-variation between the document background and foreground text of different document images  ...  Binarization methods play a central role in document image processing.  ...  Also it works for different types of degraded document images. This method has been tested on DIBCO 2011 dataset.  ... 
doi:10.15623/ijret.2014.0306025 fatcat:5maeznxkeneanpktwglbf7zauq

Secondary Task Display Attributes - Optimizing Visualizations for Cognitive Task Suitability and Interference Avoidance [article]

C. M. Chewar, D. Scott McCrickard, Ali Ndiwalana, Chris North, Jon Pryor, David Tessendorf
2002 EUROVIS 2005: Eurographics / IEEE VGTC Symposium on Visualization  
Secondary task attribute ordering varies with the level of degradation in the primary task.  ...  We found that established display design guidelines for focal images cannot be extended to images displayed as a secondary task in a dual-task situation.  ...  Some aspects of experimental psychology linking human cognition and perception are useful to refine understanding of these particular human factors.  ... 
doi:10.2312/vissym/vissym02/165-171 fatcat:6uec3ykukrbtdm7u7cek6yo2gy

Non-rigid Registration and Restoration of Double-Sided Historical Manuscripts

Jie Wang, Chew Lim Tan
2011 2011 International Conference on Document Analysis and Recognition  
Next, we extract prominent foreground feature images with the two registered images.  ...  First, the recto side and the verso side of a manuscript are precisely registered with a non-rigid registration method.  ...  Acknowledgements This research is supported in part by Ministry of Education, Singapore, under research grant R252-000-349-112.  ... 
doi:10.1109/icdar.2011.276 dblp:conf/icdar/WangT11 fatcat:j3i4w5b3ebhmrcf6yxyrcmkp74

Blind Images Quality Assessment of Distorted Screen Content Images

Chate Harold, Niquice Nelta
2018 Journal of network intelligence  
Methods of acquiring accurate and reliable image quality evaluation as well as multimedia technology have advanced and they recently have become highly instrumental in multi-device communication applications  ...  humans.  ...  of Jiangsu Province of China (BK20130199, BK20131124)  ... 
dblp:journals/jni/HaroldN18 fatcat:ag2vofrwszahjmzkiuyxnn44fu

Visual Perception of Semi-transparent Blotches: Detection and Restoration [chapter]

V. Bruni, A. J., A. Kokaram, D. Vitulano
2008 Brain, Vision and AI  
An important area in digital image processing, and in particular in digital restoration, is human visual perception (Winkler, 2005) . Perception laws are crucial in several image processing models.  ...  This is then used to guide the blotch removal in the remaining image components according to human perception.  ...  This book provides only a small example of this research activity, but it covers a great deal of what has been done in the field recently.  ... 
doi:10.5772/6047 fatcat:jj5lp2hffbfano3u3nfykjw7mq

Biological inspired tools for patrimonial handwriting denoising and categorization

V. Eglin, S. Bres, C. Rivero, H. Emptoz
2005 Eighth International Conference on Document Analysis and Recognition (ICDAR'05)  
In this paper, we propose a global segmentation free methodology for patrimonial documents denoising, handwriting characterization and categorization that are based on biological inspired approaches.  ...  We widely used here the spectral domain of handwritten images by frequency decompositions: Hermite transforms and Gabor bank filters.  ...  Perceptual approach of background denoising 1 Hermite decompositions Many digital images of documents and more generally ancient manuscripts are degraded by the presence of strong artefacts in the background  ... 
doi:10.1109/icdar.2005.58 dblp:conf/icdar/EglinBRE05 fatcat:7iywzptqr5fx3kjltgzoh4gzdu

Effect of "Ground Truth" on Image Binarization

Elisa H. Barney Smith, Chang An
2012 2012 10th IAPR International Workshop on Document Analysis Systems  
Image binarization has a large effect on the rest of the document image analysis processes in character recognition. Algorithm development is still a major focus of research.  ...  Evaluation of image binarization has been done by comparison of the result of OCR systems on images binarized by different methods.  ...  This metric was shown to be correlated with human perception of degradation level. A low DRD score denotes that the algorithm is good at binarization. • Misclassification penalty metric (MPM).  ... 
doi:10.1109/das.2012.32 dblp:conf/das/SmithA12 fatcat:s5eeonw65fd43no62rnda5da3i
« Previous Showing results 1 — 15 out of 45,382 results