Page 4 of 23 - About 222 essays
  • Importance Of Subpixel Significance Of Image Correlance

    771 Words  | 4 Pages

    Subpixel correlation of optical imagery is also based on normalized cross correlation. However, COSI-CORR applies correlation in both spatial and frequencies domain (Yaseen & Anwar, 2013). This allows a spatial correlation that gives the 2-D displacement. Figure 4.9 and 4.8 shows the spatial displacement. The black box shows landslide area. These two bands combined gives a vector field (figure 4.11). This vector field shows the direction of landslide. To achieve a good correlation is needed. Correlation

  • Secure Patients Data Transmission Using

    1634 Words  | 7 Pages

    important that patient privacy is protected while data are being transmitted over the public network as well as when they are stored in hospital servers . In this paper, a one new technique has been introduced which is the hybrid of encryption and wavelet-based ECG steganography technique . Encryption allows privacy and ECG steganography allows to hide one sensitive data into other insensitive host thus guaranteeing the integration between ECG and the rest. Keywords:-ECG ,encryption

  • Discrete Wavelet Transform For Compressing And Decompressing The Speech Signal

    2257 Words  | 10 Pages

    Discrete Wavelet Transform for Compressing and Decompressing the Speech Signal Bhavana Pujari1, Prof. S.S.Gundal2 Abstract: The original digital speech signal contains tremendous measure of memory, the main concept for the speech compression algorithm is presented here, in which bit rate of the speech signal is reduced with maintaining signal quality for storage, memory saving or transmission over the long distance. The concentration of this project is to compact the digital speech signal using

  • Wavelet Based Protection Scheme For Multi Terminal Transmission System

    2124 Words  | 9 Pages

    WAVELET BASED PROTECTION SCHEME FOR MULTI TERMINAL TRANSMISSION SYSTEM WITH PV AND WIND GENERATION Y Manju Sree1 Ravi kumar Goli2 V.Ramaiah3 Assistant Professor Professor Professor Manju547sree@gmail.com goli.ravikumar@yahoo.com ramaiahvkits@gmail.com 1,2,3 Kakatiya Institute of Technology & Science, Warangal Abstract: A hybrid generation is a part of large power system in which number of sources usually attached to a power electronic

  • Essay On Medicinal Volume Information Recovery

    907 Words  | 4 Pages

    (CBIR) technique that works with homomorphic scrambled pictures from which it separates wavelet based picture includes next utilized for ensuing picture examination. Test comes about show it accomplishes recovery execution on a par with if pictures were prepared nonencrypted. In this paper, we proposed a powerful calculation of encoded medicinal volume information recovery in light of DWT (Discrete Wavelet Transform) and DFT (Discrete Fourier Transform). Since DWT can't avoid

  • Image Denoising Essay

    851 Words  | 4 Pages

    for non linear filtering, something we cannot do in the frequency domain. Recently wavelet transform is also being used to remove the impulse noise from noisy images. Historically, in early days filters were used uniformly on the entire image without discriminating between the noisy and noise-free pixels. mean filter such as

  • An Effective System For Lossless Image Compression

    1914 Words  | 8 Pages

    Abstract – In this paper, we proposed an effective system for lossless image compression using different wavelet transform such as the stationary wavelet transform, the non decimated wavelet transform, and discrete wavelet transform with delta encoding and compare the results without delta encoding. With the development in the field of networking in the process of sending and receiving files needed to effective techniques for image compression as the raw images required large amounts of disk space

  • What Is Fourier Transform

    917 Words  | 4 Pages

    A continuous wavelet transform is expressed as: Where x(t)is the waveform signal, a is the scale parameter, b is the time parameter and ψ(t)is the mother wavelet, which is a zero mean oscillatory function centred around zero with a finite energy,∫_(-∞)^(+∞)▒〖ψ(t)dt=0〗, and “*” denotes complex conjugate. By dilating via the scale parameter a and translations via the time parameter b, wavelet transform of a waveform signal decomposes the signal to a number

  • Characteristics Of The Watermarking System

    1423 Words  | 6 Pages

    the CSF characteristics of the HVS in order to embed the watermarking data on selected wavelet coefficients of the input image. The selected coefficients dwell on the detail sub bands and the information about the edges of the image were contained in them. Hence, the embedded information becomes invisible by exploiting the HVS which was less sensitive to alterations on high frequencies. The success of their method in terms of robustness and transparency was illustrated by results

  • Essay On Pan-Sharpening Techniques

    908 Words  | 4 Pages

    SFIM and wavelet transform are applied to the intensity component of MS images and the Pan image to build the multi-scale representations which include the low- and high frequency sub-images in different scales, While SFIM can effectively preserve images’ spectral properties. Since the low- and high-frequency sub-images obtained from wavelet decomposition have different information of images, we process low- and high frequency sub-images with different strategies. At last, the inverse wavelet transform