Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974048
Fangwei Zhao, C. Desilva
A noise reduction scheme based on multi-scale products of the dyadic discrete wavelet transform is proposed and a new automatic threshold finding strategy is defined, which assumes no a priori knowledge about the image structure or noise. The preliminary results of applying this scheme to prostate ultrasound images are promising. The important features of the original image are preserved while most of the speckle noise is removed.
{"title":"Noise reduction of ultrasound prostate images using multi-scale products of the wavelet transform","authors":"Fangwei Zhao, C. Desilva","doi":"10.1109/ANZIIS.2001.974048","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974048","url":null,"abstract":"A noise reduction scheme based on multi-scale products of the dyadic discrete wavelet transform is proposed and a new automatic threshold finding strategy is defined, which assumes no a priori knowledge about the image structure or noise. The preliminary results of applying this scheme to prostate ultrasound images are promising. The important features of the original image are preserved while most of the speckle noise is removed.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114774747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974049
Dequan Li, D. Feng
In this paper, we analyze a fragile watermark algorithm of Lisa M. Marvel et al. (2000) and show a security weakness therein. We then show that a fragile watermark could not survive DCT compression as long as the authenticator is constructed from pixel values. After that, a new algorithm is presented, which gets rid of the severe security weakness and the implementation flaw of Lisa M. Marvel et al.'s method.
本文分析了Lisa M. Marvel et al.(2000)的一种脆弱水印算法，并指出了其中的一个安全漏洞。然后，我们证明，只要验证器是由像素值构造的，脆弱的水印就不能在DCT压缩中幸存下来。在此基础上，提出了一种新的算法，该算法克服了Lisa M. Marvel等人的方法存在的严重安全漏洞和实现缺陷。
{"title":"A DCT robust multimedia authentication scheme","authors":"Dequan Li, D. Feng","doi":"10.1109/ANZIIS.2001.974049","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974049","url":null,"abstract":"In this paper, we analyze a fragile watermark algorithm of Lisa M. Marvel et al. (2000) and show a security weakness therein. We then show that a fragile watermark could not survive DCT compression as long as the authenticator is constructed from pixel values. After that, a new algorithm is presented, which gets rid of the severe security weakness and the implementation flaw of Lisa M. Marvel et al.'s method.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114799759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974046
Wilson, P. Ho, K. Bengston, M. Dadd, C.F. Chen, C. Huynh, R. Gill
Home telecare uses a number of telemedicine technologies used for caring for patients in their homes rather than in the hospital system. To provide continuous monitoring of vital signs with minimal disruption of a normal lifestyle, we have developed an ultra-low power wireless and sensing system which may be installed in the home. The system is built around a two-way, 2.4 GHz radio system including miniature patient-worn units. A PC and small base station in the home collect and upload information to a monitoring centre at regular intervals, or in response to defined events. The system is designed to be installed in a home for periods of monitoring as a replacement for more expensive institutional care. The initial clinical application is a group of elderly patients who have presented following a number of idiopathic falls. In order to both detect a fall and determine its cause (which may be cardiovascular), the wearable radio system is equipped with accelerometers and equipment for measuring heart rate. A web-based distributed information system for caregivers incorporates automatic recognition of events or trends requiring intervention. The system is currently undergoing preliminary clinical trials.
{"title":"The CSIRO hospital without walls home telecare system","authors":"Wilson, P. Ho, K. Bengston, M. Dadd, C.F. Chen, C. Huynh, R. Gill","doi":"10.1109/ANZIIS.2001.974046","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974046","url":null,"abstract":"Home telecare uses a number of telemedicine technologies used for caring for patients in their homes rather than in the hospital system. To provide continuous monitoring of vital signs with minimal disruption of a normal lifestyle, we have developed an ultra-low power wireless and sensing system which may be installed in the home. The system is built around a two-way, 2.4 GHz radio system including miniature patient-worn units. A PC and small base station in the home collect and upload information to a monitoring centre at regular intervals, or in response to defined events. The system is designed to be installed in a home for periods of monitoring as a replacement for more expensive institutional care. The initial clinical application is a group of elderly patients who have presented following a number of idiopathic falls. In order to both detect a fall and determine its cause (which may be cardiovascular), the wearable radio system is equipped with accelerometers and equipment for measuring heart rate. A web-based distributed information system for caregivers incorporates automatic recognition of events or trends requiring intervention. The system is currently undergoing preliminary clinical trials.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122213519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974044
M. Sethi, A. Manikas
In this paper an approach for digitising the wireless MRI unit to data processing unit link is presented. The proposed method is able to support multiple medical imaging devices functioning in a low signal to noise ratio environment. The architecture utilises the short code CDMA signalling format since this offers a number of advantages, and a novel joint-space time remote array receiver. The receiver output can be used to make reliable data symbol decisions even in conditions of low input Signal to Noise ratio. The theoretical framework is supported by computer simulation studies.
{"title":"Digitising the wireless MRI link: a space-time CDMA approach","authors":"M. Sethi, A. Manikas","doi":"10.1109/ANZIIS.2001.974044","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974044","url":null,"abstract":"In this paper an approach for digitising the wireless MRI unit to data processing unit link is presented. The proposed method is able to support multiple medical imaging devices functioning in a low signal to noise ratio environment. The architecture utilises the short code CDMA signalling format since this offers a number of advantages, and a novel joint-space time remote array receiver. The receiver output can be used to make reliable data symbol decisions even in conditions of low input Signal to Noise ratio. The theoretical framework is supported by computer simulation studies.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114667607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974067
C. Moore, I. Murray
The paper documents a new design for a Braille typewriter. Comprising a majority of electrical components; the design aims to produce a product that fills the gap in the range of Braillers available. A low cost and robust design will provide the blind with an affordable and reliable alternative to the Perkins and Mountbatten Braillers. The Braille typewriter will comprise the following key components: 10 digit keypad; PIC 16F877 micro controller; 3 stepper motors; 3 stepper motor controllers; embossing tool; 2 solenoids; warning speaker; and nylon casing.
{"title":"An electronic design of a low cost Braille typewriter","authors":"C. Moore, I. Murray","doi":"10.1109/ANZIIS.2001.974067","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974067","url":null,"abstract":"The paper documents a new design for a Braille typewriter. Comprising a majority of electrical components; the design aims to produce a product that fills the gap in the range of Braillers available. A low cost and robust design will provide the blind with an affordable and reliable alternative to the Perkins and Mountbatten Braillers. The Braille typewriter will comprise the following key components: 10 digit keypad; PIC 16F877 micro controller; 3 stepper motors; 3 stepper motor controllers; embossing tool; 2 solenoids; warning speaker; and nylon casing.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122032914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974107
I. Brown
This paper describes the curriculum and approach used to introduce undergraduate biomedical engineering students to the process of medical technology innovation and business planning. Acknowledging that undergraduates may lack experience in relation to many of the issues that need to be dealt with in relation to the design, development and commercialisation of new technology, the author has progressively used the Internet as a growing window to the world to enable students to build a knowledge base beyond their own experience. Like real first time innovators the students are expected to acquire the knowledge required to firstly generate new design concepts, then select the most medically and commercially interesting design concept, establish IP management requirements, look at costs associated with R&D, product development and commercialisation, identify regulatory requirements, assess competition, and then analyse cost and profit. The classroom teaching is based on recent Australian technology case studies and the innovation focus is concentrated in a prescribed area of medical technology. The desired outcome is a knowledge of the issues that either assist or inhibit the development of new medical technology and insights into the innovation process. Each undergraduate student develops a business plan for the development of a new medical device.
{"title":"Teaching undergraduates medical technology innovation and business planning","authors":"I. Brown","doi":"10.1109/ANZIIS.2001.974107","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974107","url":null,"abstract":"This paper describes the curriculum and approach used to introduce undergraduate biomedical engineering students to the process of medical technology innovation and business planning. Acknowledging that undergraduates may lack experience in relation to many of the issues that need to be dealt with in relation to the design, development and commercialisation of new technology, the author has progressively used the Internet as a growing window to the world to enable students to build a knowledge base beyond their own experience. Like real first time innovators the students are expected to acquire the knowledge required to firstly generate new design concepts, then select the most medically and commercially interesting design concept, establish IP management requirements, look at costs associated with R&D, product development and commercialisation, identify regulatory requirements, assess competition, and then analyse cost and profit. The classroom teaching is based on recent Australian technology case studies and the innovation focus is concentrated in a prescribed area of medical technology. The desired outcome is a knowledge of the issues that either assist or inhibit the development of new medical technology and insights into the innovation process. Each undergraduate student develops a business plan for the development of a new medical device.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126178987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974082
M. Sharma, Sameer Singh
The analysis of natural scenes is an important research area. Scene analysis research provides the foundation for the development of autonomous systems whose vision sensors provide important information about the surrounding environment. In this paper we introduce the Minerva scene analysis benchmark to the vision community and provide preliminary results on this data. The scene analysis benchmark contains 448 natural images in both colour and greyscale format. The images contain 8 natural objects including sky, brick, clouds, pebbles, road, trees, grass and leaves. The benchmark is intended to facilitate further research into scene analysis and to encourage the development of tools and techniques that work on natural object recognition. The results reported here have used four image segmentation techniques including fuzzy c-means clustering, histogram based thresholding, region growing, and split and merge. Following segmentation, texture features for object classification have been generated using five different texture analysis methods including autocorrelation, co-occurrence matrices, edge frequency, Law's, and run length. These results can be taken as a preliminary baseline on this benchmark.
{"title":"Minerva scene analysis benchmark","authors":"M. Sharma, Sameer Singh","doi":"10.1109/ANZIIS.2001.974082","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974082","url":null,"abstract":"The analysis of natural scenes is an important research area. Scene analysis research provides the foundation for the development of autonomous systems whose vision sensors provide important information about the surrounding environment. In this paper we introduce the Minerva scene analysis benchmark to the vision community and provide preliminary results on this data. The scene analysis benchmark contains 448 natural images in both colour and greyscale format. The images contain 8 natural objects including sky, brick, clouds, pebbles, road, trees, grass and leaves. The benchmark is intended to facilitate further research into scene analysis and to encourage the development of tools and techniques that work on natural object recognition. The results reported here have used four image segmentation techniques including fuzzy c-means clustering, histogram based thresholding, region growing, and split and merge. Following segmentation, texture features for object classification have been generated using five different texture analysis methods including autocorrelation, co-occurrence matrices, edge frequency, Law's, and run length. These results can be taken as a preliminary baseline on this benchmark.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130831880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974040
S. Crozier, H. Zhao, L. Forbes, B. Lawrence, D. Yau
We have recently introduced the concept of asymmetric clinical MRI systems. The potential advantages of these systems include a reduced perception of claustrophobia by patients and better physician access to the patient. For asymmetric magnet systems to be useful as a clinical system, asymmetric shims and RF coils must be implemented, and in this work we describe new design methodologies for both.
{"title":"Asymmetric MRI systems","authors":"S. Crozier, H. Zhao, L. Forbes, B. Lawrence, D. Yau","doi":"10.1109/ANZIIS.2001.974040","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974040","url":null,"abstract":"We have recently introduced the concept of asymmetric clinical MRI systems. The potential advantages of these systems include a reduced perception of claustrophobia by patients and better physician access to the patient. For asymmetric magnet systems to be useful as a clinical system, asymmetric shims and RF coils must be implemented, and in this work we describe new design methodologies for both.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114153604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974066
I. Siewert, I. Murray, T. Dias
For pt.I see ibid., p.135-40 (2001). The article describes the software component of a prototype currency identifier. Identification is performed by imaging and recognising the contents of the clear window found near the lower corner of each note (I. Siewart, 1998), which is unique for each denomination. This development is of significance in Australia to people who suffer a large degree of vision impairment, and possibly also to the vision impaired population of the European Union, which may also plan to adopt polymer note technology.
{"title":"Australian currency note identifier for the vision impaired: Part II software description","authors":"I. Siewert, I. Murray, T. Dias","doi":"10.1109/ANZIIS.2001.974066","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974066","url":null,"abstract":"For pt.I see ibid., p.135-40 (2001). The article describes the software component of a prototype currency identifier. Identification is performed by imaging and recognising the contents of the clear window found near the lower corner of each note (I. Siewart, 1998), which is unique for each denomination. This development is of significance in Australia to people who suffer a large degree of vision impairment, and possibly also to the vision impaired population of the European Union, which may also plan to adopt polymer note technology.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133858826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/ANZIIS.2001.974110
W. Thorpe, M. Kurver, G. King, C. Salome
This paper describes a method for quantitatively analysing cough sound. Coughs are obtained from normal adults before and after methacholine challenge which provides an intervention altering the airway characteristics. The analysis method characterises the cough sound by a set of temporal and spectral features. The results show that although there is some variability of these features within a subject, they are able to characterise significant differences in the cough sound after methacholine challenge. This suggests that acoustic analysis of the cough is able to provide information on the airway flow mechanics during cough that could be useful in diagnosis.
{"title":"Acoustic analysis of cough","authors":"W. Thorpe, M. Kurver, G. King, C. Salome","doi":"10.1109/ANZIIS.2001.974110","DOIUrl":"https://doi.org/10.1109/ANZIIS.2001.974110","url":null,"abstract":"This paper describes a method for quantitatively analysing cough sound. Coughs are obtained from normal adults before and after methacholine challenge which provides an intervention altering the airway characteristics. The analysis method characterises the cough sound by a set of temporal and spectral features. The results show that although there is some variability of these features within a subject, they are able to characterise significant differences in the cough sound after methacholine challenge. This suggests that acoustic analysis of the cough is able to provide information on the airway flow mechanics during cough that could be useful in diagnosis.","PeriodicalId":383878,"journal":{"name":"The Seventh Australian and New Zealand Intelligent Information Systems Conference, 2001","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114645157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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