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Detection of image stretching

Yuzhen Niu, Feng Liu, Xueqing Li, Huiyun Bao, Michael Gleicher
2010 Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization - APGV '10  
of uniformly stretching the image.  ...  We show that even small stretches can be detected in some cases.  ...  All of the images used in this paper are reproduced under Creative Commons license or  ... 
doi:10.1145/1836248.1836266 dblp:conf/apgv/NiuLLBG10 fatcat:6gybvvyjtjdzrgvowmbuqlodla

Edge Detection in Digital Images Using Dispersive Phase Stretch Transform

Mohammad H. Asghari, Bahram Jalali
2015 International Journal of Biomedical Imaging  
We show that the output phase of the transform reveals transitions in image intensity and can be used for edge detection.  ...  We describe a new computational approach to edge detection and its application to biomedical images.  ...  Conflict of Interests The authors declare that there is no conflict of interests regarding the publication of this paper.  ... 
doi:10.1155/2015/687819 pmid:25878656 pmcid:PMC4386678 fatcat:bozfqx2qhneu7llfnpnw4fff7y

Power efficiency of time-stretch imaging system by using parallel interleaving detection

Mengxuan Lv Mengxuan Lv, Bo Dai Bo Dai, Songchao Yin Songchao Yin, Dawei Zhang Dawei Zhang, and Xu Wang and Xu Wang
2016 Chinese Optics Letters (COL)  
A 38.88 MHz time-stretch line-scan imaging system with parallel interleaving detection is experimentally demonstrated.  ...  Thanks to the improvement of the power efficiency by using parallel interleaving detection, the signal quality is enhanced.  ...  Figure 1 shows the time-stretch imaging system with the proposed parallel interleaving detection. A broadband laser source is used to generate a sequence of short pulses.  ... 
doi:10.3788/col201614.101103 fatcat:ddhn43xqireifnmwj4rjvk7qfy

Crack Detection of Medical Bone Image Using Contrast Stretching Algorithm with the Help of Edge Detection

Shubham Yelne, Rupali Tomar, Ankush Jadhao, Roshan Boriwar
2015 International Journal of Scientific Engineering and Technology  
The purpose of this project is to find out the accuracy of an X-Ray Detection of crack Bone using Canny Edge Detection Method.  ...  Crack in the Bone only happen when the bones took a force beyond their elasticity or strength .Canny Edge Detection method is an optimal edge detection algorithm on determining the end of a line with changeable  ...  Automatic Crack Detection of Bone We are using Contrast Stretching algorithm for detecting the crack on the bone Contrast stretching is a simple image enhancement technique that attempts to improve the  ... 
doi:10.17950/ijset/v4s3/306 fatcat:2kdk235pafcmfea7fvtramyfna

Asymmetric-detection time-stretch optical microscopy (ATOM) for ultrafast high-contrast cellular imaging in flow [article]

Terence T. W. Wong , Matthew Y. H. Tang, Antony C. S. Chan , Godfrey C. F. Chan The University of Hong Kong, Hong Kong These authors contributed equally to this work)
2013 arXiv   pre-print
We here demonstrate a new imaging approach, called asymmetric-detection time-stretch optical microscopy (ATOM), which can deliver ultrafast label-free high-contrast flow imaging with well delineated cellular  ...  Accelerating imaging speed in optical microscopy is often realized at the expense of image contrast, image resolution, and detection sensitivity- a common predicament for advancing high-speed and high-throughput  ...  With the aim of enlarging the scope of time-stretch imaging applications, we here introduce a new imaging approach called asymmetric-detection time-stretch optical microscopy (ATOM), for obtaining label-free  ... 
arXiv:1309.5579v1 fatcat:plwhhgjhmfdg5iczo3p2e33d44

Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)

Anson H. L. Tang, Queenie T. K. Lai, Bob M. F. Chung, Kelvin C. M. Lee, Aaron T. Y. Mok, G. K. Yip, Anderson H. C. Shum, Kenneth K. Y. Wong, Kevin K. Tsia
2017 Journal of Visualized Experiments  
Chung Department of Electrical and Electronic Engineering, The University of Hong Kong Department of Mechanical Engineering, The University of Hong Kong Correspondence to: Kevin K.  ...  into electrical signal Infiniium High-Performance Oscilloscope Agilent DSOX91604A To save the light-converted electrical signals HI1060 optical fiber Corning HI1060 Optical fiber for time-stretch  ... 
doi:10.3791/55840 pmid:28715367 pmcid:PMC5608519 fatcat:tyr65o7dpzafxihcbuuftsalfi

Asymmetric-detection time-stretch optical microscopy (ATOM) for high-contrast and high-speed microfluidic cellular imaging

Terence T. W. Wong, Andy K. S. Lau, Matthew Y. H. Tang, Kenneth K. Y. Ho, Kenneth K. Y. Wong, Anderson H. C. Shum, Kevin K. Tsia, Daniel L. Farkas, Dan V. Nicolau, Robert C. Leif
2014 Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues XII  
We have demonstrated a new imaging modality, asymmetric-detection time-stretch optical microscopy (ATOM), by incorporating a simple detection scheme which is a further advancement in time-stretch microscopya  ...  Through the asymmetric-detection scheme in ATOM, the time-stretch image contrast is enhanced through accessing to the phase-gradient information.  ...  HKU 7172/12E, HKU 717510E, HKU 717911E, HKU 720112E) and University Development Fund of HKU.  ... 
doi:10.1117/12.2038952 fatcat:5u44gwubojd5dkpojxgzjyluni

Response of Rigor Cross-bridges to Stretch Detected by Fluorescence Lifetime Imaging Microscopy of Myosin Essential Light Chain in Skeletal Muscle Fibers

Dmitry S. Ushakov, Valentina Caorsi, Delisa Ibanez-Garcia, Hugh B. Manning, Antonios D. Konitsiotis, Timothy G. West, Christopher Dunsby, Paul M. French, Michael A. Ferenczi
2010 Journal of Biological Chemistry  
We applied fluorescence lifetime imaging microscopy to map the microenvironment of the myosin essential light chain (ELC) in permeabilized skeletal muscle fibers.  ...  However, when 1% stretch was applied to the rigor fibers, the lifetime decreased for ELC-127 and ELC-180 but did not change for ELC-142 and ELC-160.  ...  Fluorescence lifetime images were acquired after each step in each of the two states, stretched, and released.  ... 
doi:10.1074/jbc.m110.149526 pmid:21056977 pmcid:PMC3013043 fatcat:uham6q6uxrde3mmfj66qfm2roa

Automatic cell detection and segmentation from H and E stained pathology slides using colorspace decorrelation stretching

Mohammad Peikari, Anne L. Martel, Metin N. Gurcan, Anant Madabhushi
2016 Medical Imaging 2016: Digital Pathology  
This altered RGB image is then used to segment cells.  ...  Most of the state-of-the-art cell detection and segmentation techniques focus on complicated methods to subtract foreground cells from the background.  ...  set+ # of detected cells) F1-score = 2× Precision×Recall/(Precision+Recall) Figure 2 . 2 Effect of decorrelation stretching as a preprocessing stage on detecting cells from a pathology image patch.  ... 
doi:10.1117/12.2216507 dblp:conf/midp/PeikariM16 fatcat:j4prlalm35hxlcfc7uplv6zzte

Analysis of Edge Detection Technique by Varying Image Contrast

Tasnuva Tasneem, Zeenat Afroze
2014 IOSR Journal of Electrical and Electronics Engineering  
Edge detection technique is a vital part of image processing that can be applied to different types of images including medical images.  ...  Results are analyzed corresponding to images of different contrast which can be achieved by histogram stretching.  ...  In this paper, edge detection method is applied on images of different contrast. An effective technique called histogram stretching is used here for adjusting the contrast of images.  ... 
doi:10.9790/1676-09522127 fatcat:4uzgx3ojtbeerfnjvj2ouqgtpm

High-throughput Biological Cell Classification Featuring Real-time Optical Data Compression [article]

Bahram Jalali, Ata Mahjoubfar, Claire L. Chen
2015 arXiv   pre-print
Enabled by the photonic time stretch digitizer, a new class of instruments with record throughputs have led to the discovery of optical rogue waves [1], detection of rare cancer cells [2], and the highest  ...  It has enabled detection of breast cancer cells in blood with record, one-in-a-million, sensitivity [2].  ...  TIME STRETCH IMAGING The basic principle of time stretch imaging (STEAM) involves two steps both performed optically.  ... 
arXiv:1503.05834v1 fatcat:ivuaqz2yvbemjfcpntrxffpzxq

Cancer Detection with High-throughput Image Cytometry

Cheng LEI, Zhenzhou CHENG, Keisuke GODA
2016 Medical Imaging Technology  
In this review article, we discuss the principles of optical time-stretch imaging and its application to cancer detection.  ...  This technological problem can be solved by high-throughput image cytometrya technique that integrates microfluidics and optical time-stretch imaging.  ...  Acknowledgements This work was supported by ImPACT Program of the Council for Science, Technology and Innovation (Cabinet Office, Government of Japan), JSPS KAKENHI (grant numbers 25702024 and 25560190  ... 
doi:10.11409/mit.34.68 fatcat:pjxu6dyldvclbbgiv2jv6o6h4e

Interactive Hand Pose Estimation: Boosting accuracy in localizing extended finger joints

Cairong Zhang, Guijin Wang, Hengkai Guo, Xinghao Chen, Fei Qiao, Huazhong Yang
2018 IS&T International Symposium on Electronic Imaging Science and Technology  
It first detects which fingers are stretching out, then neighbor pixels of certain joint vote for its new location based on random forests.  ...  After the refinement stage of stretching-out fingers, errors of predicted HMI finger joint locations are significantly reduced.  ...  Stretching-out fingers detection We detect stretching-out fingers based on hand mask images ( Fig.1(a) ), using the method proposed in our previous work [18] .  ... 
doi:10.2352/issn.2470-1173.2018.2.vipc-251 fatcat:fgavbuyweffxhjebmalteupb7q

Phase-Stretch Adaptive Gradient-Field Extractor (PAGE) [chapter]

Madhuri Suthar, Bahram Jalali
2020 Coding Theory [Working Title]  
We demonstrate applications of this algorithm in edge detection and extraction of semantic information from medical images, electron microscopy images of semiconductor circuits, optical characters and  ...  (phase) detection.  ...  This work was partially supported by the National Institutes of Health (NIH) Grant No. 5R21 GM107924-03 and the Office of Naval Research (ONR) Multi-disciplinary University Research Initiatives (MURI)  ... 
doi:10.5772/intechopen.90361 fatcat:qatzel3wzvctrpplvicbhmlfqy

Automatic segmentation of wrist bone fracture area by K-means pixel clustering from X-ray image

Kwang Baek Kim, Doo Heon Song, Sang-Seok Yun
2019 International Journal of Electrical and Computer Engineering (IJECE)  
This method can recover previously detected patterned false cases with edge detection method after fuzzy stretching. The proposed method is successful in 16 out of 20 tested cases in experiment.  ...  Early detection of subtle fracture is important particularly for the senior citizens' quality of life.  ...  The sources of difficulty in visual detection by radiologists might be the overlapping of several anatomical structures on an X-ray image or the inconsistency of image quality across exams.  ... 
doi:10.11591/ijece.v9i6.pp5205-5210 fatcat:qluxob3gg5e5dduhkoszheeijq
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