• Semi-automatic road extraction from aerial images 

  Udomhunsakul, Somkait; Kozaitis, Samuel P.; Sritheeravirojana, Uthai Thai (2004-02-13)

  In this work, we proposed a method to detect roads in aerial imagery. In our approach, we applied the wavelet transform in a multiresolution sense by forming the products of wavelet coefficients at the different scales to ...

• Multiple description image coding with distributed source coding and side information 

  Wu, Min; Vetro, Anthony; Chen, Chang Wen (2004-10-25)

  Multiple description coding (MDC) is a source coding technique that involves coding the source information into multiple descriptions. When these descriptions are transmitted over different channels in packet network or ...

• A novel multiple description scalable coding scheme for mobile wireless video transmission 

  Zheng, Haifeng; Yu, Lun; Chen, Chang Wen (2005-03-14)

  We proposed in this paper a novel multiple description scalable coding (MDSC) scheme based on in-band motion compensation temporal filtering (IBMCTF) technique in order to achieve high video coding performance and robust ...

• Visualization of medical images over mobile wireless handheld devices 

  Wu, Min; Ashish, Khurana; Mariappan, Nadar; Chen, Chang Wen (2005-03-14)

  With the novel advances in wireless communication and personal mobile handheld devices, a newly emerging technology of medical visualization on mobile handheld is believed to provide advance service for physicians, especially ...

• Effective quality analysis for video streaming over wireless ad hoc network 

  He, Zhihai; Chen, Chang Wen (2004-01-18)

  Video encoding and streaming over wireless ad hoc network operates under severe conditions, such as time-varying channel characteristics with bursty errors, limit power for data transmission, and dynamic topology of the ...

• Layered unequal loss protection for progressive image transmission over packet loss channels 

  Cai, Jianfei; Li, Xiangjun; Chen, Chang Wen (2004-01-18)

  In the past, many schemes have been proposed for progressive image transmission using unequal error protection (UEP) or unequal loss protection (ULP). However, most existing UEP/ULP schemes do not consider the minimum image ...

• Collaborative image transmission over wireless sensor networks 

  Wu, Min; Chen, Chang Wen (2004-01-18)

  The imaging sensors are able to provide intuitive visual information for quick recognition and decision. However, imaging sensors usually generate vast amount of data. Thus, processing of image data collected in the sensor ...

• A half Dl MPEG-4 encoder on the BSP-15 DSP 

  Chen, Lulin; He, Zhihai; Chen, Chang Wen; Isnardi, Michael A. (2004-01-18)

  In this paper, we present the work on implementation of a half-Dl interlaced MPEG-4 encoder with Equator Technology DSP chip, BSP-15. The BSP-15 DSP consists mainly of a VLIW core, Co-processors, and media I/O interfaces. ...

• Joint source-channel decoding for MPEG-2 video transmission 

  Yin, Liuguo; Chen, Weigang; Lu, Jianhua; Chen, Chang Wen (2004-10-25)

  Joint source-channel coding schemes have been proven to be effective ways for reliable multimedia communications. In this paper, a joint source-channel decoding (JSCD) scheme that combines the hidden Markov source (HMS) ...

• Multiple description coding based on multiple bitstream wavelet zero tree image compression 

  Song, Daewon; Chen, Chang Wen; Cao, Lei (2004-10-25)

  Multiple description coding (MDC) is a well-known robust data compression algorithm designed to minimize the distortion caused by data loss in packet-based communication systems. Several MDC schemes for transmitting wavelet ...

• Multiple wavelet-tree-based image coding and robust transmission 

  Cao, Lei; Chen, Chang Wen (2004-10-25)

  In this paper, we present techniques based on multiple wavelet-tree coding for robust image transmission. The algorithm of set partitioning in hierarchical trees (SPIHT) is a state-of-the-art technique for image compression. ...

• Layered unequal loss protection for image transmission over packet loss channels with delay constraints 

  Cai, Jianfei; Li, Xiangjun; Chen, Chang Wen (2004-10-25)

  In the case of high bit rate image transmission or having lots of packets, the FEC (forward error correction) encoding and decoding processes in the ULP (unequal loss protection) based schemes should be applied to individual ...

• Speckle denoising using wavelet transforms and higher-order statistics 

  Kozaitis, Samuel P.; Ingun, Anurat (2004)

  We reduced speckle noise in SAR imagery by retaining only those wavelet coefficients with significant third-order correlation coefficients. These coefficients were generated from the cross-correlation functions of the image ...

• Ubiquitous map image access through wireless overlay networks 

  Cai, Jianfei; Huang, Haijie; Ni, Zefeng; Chen, Chang Wen (2004)

  With the availability of various wireless link-layer technologies, such as Bluetooth, WLAN and GPRS, in one wireless device, ubiquitous communications can be realized through managing vertical handoff in the environment ...

• Multiple description distributed image coding with side information for mobile wireless transmission 

  Wu, Min; Song, Daewon; Chen, Changwen (2005-01)

  Multiple description coding (MDC) is a source coding technique that involves coding the source information into multiple descriptions, and then transmitting them over different channels in packet network or error-prone ...

• Mode splitting and resonant coupling between a slot metasurface and PMMA 

  Finch, Michael F.; Lail, Brian A. (2014-08-18)

  A slot metasurface (metascreen) designed to have resonance that couples with the 1733 cmˉ¹ absorption peak of the C=O molecular bond of PMMA (polymethyl methacrylate) is presented. The metasurface is made of a gold layer ...

• Universal liquid level sensor employing fresnel coefficient based discrete fiber optic measurement technique 

  Murshid, Syed H. (2014-08-18)

  A compact and light weight liquid-level-measuring system based on fiber-optics sensor technology is presented as alternative to systems based on float gauges and other conventional level sensors for liquids that pose fire, ...

• Architecture of an all optical de-multiplexer for spatially multiplexed channels 

  Murshid, Syed H.; Finch, Michael F.; Lovell, Gregory L. (2013-04-29)

  Multiple channels of light can propagate through a multimode fiber without interfering with each other and can be independently detected at the output end of the fiber using spatial domain multiplexing (SDM). Each channel ...

• Analysis of spatial domain multiplexing/space division multiplexing (SDM) based hybrid architectures operating in tandem with wavelength division multiplexing 

  Murshid, Syed H.; Lovel, Greg; Chowdhury, Bilas; Hridoy, Arnob; Parhar, Gurinder; Chakravarty, Abhijit; Alanzi, Saud F. (2014-08-18)

  Spatial domain multiplexing (SDM) also known as space division multiplexing adds a new degree of photon freedom to existing optical fiber multiplexing techniques by allocating separate radial locations to different MIMO ...

• CAD model for co-propagating spatially multiplexed channels of same wavelength over standard multimode fibers 

  Murshid, Syed H.; Biswas, Raka; Chakravarty, Abhijit (2009-04-28)

  Spatial Domain Multiplexing (SDM) is a novel technique that allows co-propagation of two or more optical communication channels of the same wavelengths over a single strand of optical fiber cable by maintaining spatial ...

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