The Experts below are selected from a list of 12996 Experts worldwide ranked by ideXlab platform

Hungbog Park - One of the best experts on this subject based on the ideXlab platform.

  • invisible watermarking for improved security of Digital Video Application
    Journal of the Korea Society of Computer and Information, 2011
    Co-Authors: Junghee Seo, Hungbog Park
    Abstract:

    Performance of Digital Video watermarking is an assessment that hides a lot of information in Digital Videos. Therefore, it is required to find a way that enables to store lots of bits of data into a high quality Video of the frequency area of Digital contents. Hence, this paper designs a watermarking system improving security with an enhancing watermarking based on invisible watermarking and embedding an watermarking on LH and HL subband and its subband by transforming wavelet after the extraction of luminance component from the frames of Video by compromising robustness and invisible of watermarking elements. The performance analysis of security of watermarking is carried out with a statistic method, and makes an assessment of robustness against variety of attacks to invisible watermarking. We can verify the security of watermarking against variety of attacks by testing robustness and invisible through carrying out general signal processing like noise addition, lossy compression, and Low-Pass filtering.

Junghee Seo - One of the best experts on this subject based on the ideXlab platform.

  • invisible watermarking for improved security of Digital Video Application
    Journal of the Korea Society of Computer and Information, 2011
    Co-Authors: Junghee Seo, Hungbog Park
    Abstract:

    Performance of Digital Video watermarking is an assessment that hides a lot of information in Digital Videos. Therefore, it is required to find a way that enables to store lots of bits of data into a high quality Video of the frequency area of Digital contents. Hence, this paper designs a watermarking system improving security with an enhancing watermarking based on invisible watermarking and embedding an watermarking on LH and HL subband and its subband by transforming wavelet after the extraction of luminance component from the frames of Video by compromising robustness and invisible of watermarking elements. The performance analysis of security of watermarking is carried out with a statistic method, and makes an assessment of robustness against variety of attacks to invisible watermarking. We can verify the security of watermarking against variety of attacks by testing robustness and invisible through carrying out general signal processing like noise addition, lossy compression, and Low-Pass filtering.

Elizabeth Mallett - One of the best experts on this subject based on the ideXlab platform.

  • initial requirements of deaf students for Video lessons learned from an evaluation of a Digital Video Application
    Learning Media and Technology, 2005
    Co-Authors: Chetz Colwell, Anne Jelfs, Elizabeth Mallett
    Abstract:

    This paper reports the findings from an observational study of a Digital Video library system, DiVA, involving deaf students and students with other medical conditions affecting their use of Video material. The Digital Video Applications (DiVA) system supports searching for and playing educational Videos, and displays transcripts of the audio track alongside the Video. Seven disabled students were observed while they watched nine Video clips and then interviewed on their opinions of the system. The study is set within a context of an increasing focus on access to educational technology for disabled students motivated by recent changes in disability discrimination law. The findings of this study confirm the recommendations of existing guidelines that Video material should be subtitled for deaf students, and that subtitles should conform to existing standards. It is acknowledged that subtitles may not be available on legacy Video material and that transcripts may be a feasible alternative. This paper makes ...

H C Luong - One of the best experts on this subject based on the ideXlab platform.

  • a 3 v 44 mhz switched capacitor bandpass filter for Digital Video Application
    International Symposium on Circuits and Systems, 2002
    Co-Authors: V S L Cheung, H C Luong
    Abstract:

    A fully-differential sixth-order switched-capacitor bandpass filter is designed with a 44-MHz center frequency and a bandwidth of 6-MHz for Digital Video Application in a standard 0.35-/spl mu/m CMOS technology (V/sub tn/ = 0.6 V, V/sub tp/ = -0.8 V). With a modified double-sampling pseudo-two-path technique, the filter achieves a sampling frequency of 176 MHz and consumes 85.5 mW.

Chetz Colwell - One of the best experts on this subject based on the ideXlab platform.

  • initial requirements of deaf students for Video lessons learned from an evaluation of a Digital Video Application
    Learning Media and Technology, 2005
    Co-Authors: Chetz Colwell, Anne Jelfs, Elizabeth Mallett
    Abstract:

    This paper reports the findings from an observational study of a Digital Video library system, DiVA, involving deaf students and students with other medical conditions affecting their use of Video material. The Digital Video Applications (DiVA) system supports searching for and playing educational Videos, and displays transcripts of the audio track alongside the Video. Seven disabled students were observed while they watched nine Video clips and then interviewed on their opinions of the system. The study is set within a context of an increasing focus on access to educational technology for disabled students motivated by recent changes in disability discrimination law. The findings of this study confirm the recommendations of existing guidelines that Video material should be subtitled for deaf students, and that subtitles should conform to existing standards. It is acknowledged that subtitles may not be available on legacy Video material and that transcripts may be a feasible alternative. This paper makes ...