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Signal and image processing

Xem 1-20 trên 107 kết quả Signal and image processing
  • In this paper, we present a method for realizing all-optical Discrete Sine and Cosine Transform (DST/DCT) for image compression. We show that all-optical DST and DCT can be achieved by using only one 4x4 MMI (multimode interference) coupler at a suitable width and length.

    pdf8p vispyker 14-11-2022 5 1   Download

  • After studying this chapter you will be able to understand: Frequency spectrum of an image, explain the sampling of the 2 dimension image, the second stage of the digitization process, in the first sampling and in the second quantization of each of the samples, optimum mean square error or lloyd-max quantizer, designing of an optimum quantizer with the given signal probability density function.

    ppt45p nanhankhuoctai8 23-06-2020 11 2   Download

  • Cell culture methods allow the detailed observations of individual plant cells and their internal processes. Whereas cultured cells are more amenable to microscopy, they have had limited use when studying the complex interactions between cell populations and responses to external signals associated with tissue and whole plant development.

    pdf15p vihashirama2711 21-05-2020 12 1   Download

  • In this paper, we have proposed shape adaptable watermarking approaches for medical multimedia processing systems. The medical images generated by X-rays, MRI and CT modalities are used in our experiments to test proposed approaches. In addition, these approaches were tested under different kinds of signal processing and geometric attacks.

    pdf18p vivalletta2711 11-01-2020 22 0   Download

  • This research presents signal-image post-processing techniques called Intensity-Curvature Measurement Approaches with application to the diagnosis of human brain tumors detected through Magnetic Resonance Imaging (MRI). Post-processing of the MRI of the human brain encompasses the following model functions: (i) bivariate cubic polynomial, (ii) bivariate cubic Lagrange polynomial, (iii) monovariate sinc, and (iv) bivariate linear.

    pdf25p trinhthamhodang1 16-11-2019 14 2   Download

  • Fault diagnosis is a complex and fuzzy cognitive process, and soft computing methods as neural networks and fuzzy logic, have shown great potential in the development of decision support systems. Dealing with expert (human) knowledge consideration, Computer-Aided Diagnosis (CAD) dilemma is one of the most interesting, but also one of the most difficult problems.

    pdf13p vititan2711 13-08-2019 12 0   Download

  • The document Processing Fundamentals and applications Digital signal present the content: introduction to digital signal processing, signal sampling and quantization, digital signals and systems, discrete fourier transform and signal spectrum, the Z-transform, digital signal processing systems, basic filtering types, and digital filter realizations, finite impulse response filter design, infinite impulse response filter design, hardware and software for digital signal processors, adaptive filters and applications, waveform quantization and compression, subband- and wavelet-based coding, ima...

    pdf893p cao_duy_son 15-08-2019 46 5   Download

  • The obtained results show significant improvement in terms of quality and fidelity of extracted signal. Also, the improvements in terms of robustness by the proposed method work effectively against various common image-processing-based attacks especially against compression attacks.

    pdf4p cathydoll5 27-02-2019 9 1   Download

  • In the paper, will propose the prediction deconvolution technique for signal processing in GPR systems. The technique is developed based on the method of Least Square filter and Wiener filter. Our processed results have shown that by applying the proposed technique, received signals will be eliminated interference and give better images with high resolution.

    pdf8p sansan2 26-05-2018 17 1   Download

  • (BQ) Part 1 The biomedical engineering handbook - Medical devices and systems has contents: Digital biomedical signal acquisition and processing, higher order spectral analysis, neural networks in biomedical signal processing, computed tomography,...and other contents.

    pdf611p bautroibinhyen27 11-05-2017 39 3   Download

  • Những nội dung chính được trình bày trong chương này gồm: Signal and Image processing, machine learning, multisim software, Kirchoff's Current Law(KCL) and Kirchoff's Voltage Law (KVL), circuit analysis. Mời các bạn cùng tham khảo.

    pdf19p nhanmotchut_1 04-10-2016 49 2   Download

  • Topics in the module include the following: Multimedia applications and requirements; multimedia data acquisition and formats; audio/Video fundamentals including analog and digital representations, human perception, and audio/video equipment, applications; digital audio signal processing, image/video Processing; digital audio synthesis; MIDI; audio and video compression; multimedia applications.

    pdf22p estupendo4 18-08-2016 62 2   Download

  • CS 450: Introduction to Digital Signal and Image Processing - Image Arithmetic includes Image Arithmetic; Image Subtraction; Background Subtraction; Motion; Digital Subtraction Angiography; Multiplication; Alpha Blending; Image Averaging.

    ppt10p cocacola_08 21-11-2015 60 3   Download

  • CS 450: Introduction to Digital Signal and Image Processing - Introduction and Applications includes what are Signals? Why Signals? Alications; Kinds of Operations; Relationship to Other Fields (IP, Graphics, and Vision); BYU Research.

    pdf12p cocacola_08 21-11-2015 39 1   Download

  • The quality of phased array and synthetic aperture ultrasonic images is limited by several factors determined by the sound propagation physics and diffraction laws. Image quality is mainly determined by: Resolution, which depends on signal bandwidth (in the axial direction) and on the aperture extent (in the lateral direction); Dynamic range, which is bounded by the ratio of the main to the sidelobes level and is related to the smallest features detection capability.

    pdf25p thaodien102 06-11-2015 31 2   Download

  • Figliola and Beasleys Fifth Edition provides revised material for engineering practice with important updates on coverage of probability and statistics and uncertainty analysis, including added material on Monte Carlo simulation, digital image processing, and with revised coverage of signal acquisition, conditioning, and processing.

    pdf605p blackhole7293 17-04-2015 95 15   Download

  • Moreover, the concept of \multimedia social networks" can be applied into the ¯eld of signal and image processing. Although there are seemingly no human factors involved in the algorithmic solution in classical signal/image processing, if we take the view that the pixels/signals of an image are forming a notion of a \social network" to jointly interact to accomplish a common (\processing") goal, be it ¯ltering, denoising, or segmentation, then the game theoretic approach can o®er new views beyond what classical methods can.

    pdf23p dambaotaikhoan 06-05-2013 55 3   Download

  • Moreover, the concept of \multimedia social networks" can be applied into the ¯eld of signal and image processing. If each pixel/sample is treated as a user, then the whole image/signal can be regarded as a multimedia social network. From such a perspective, we introduce a new paradigm for signal and image processing, and develop generalized and uni¯ed frameworks for classical signal and image prob- lems. In this thesis, we use image denoising and image interpolation as examples to illustrate how to use game theory to re-formulate the classical signal and image processing problems....

    pdf106p dambaotaikhoan 06-05-2013 64 2   Download

  • Digitizing is the process of converting a continuos signal (such as sound or video) into distinct units that the compute or other electronic equipment can process. There are many ways to digitize things. there is the microphone, which digitizes sound. The scanner can digitize photos and other images. A digital camera is able to bring video into the computer. You can also digitize 3D objects. For that you use a 3D digitizer. These come in many different shapes and sizes. They usually use lasers to map out the 3D points and create a mesh.

    pdf54p hoangphiyeah1tv 24-04-2013 51 1   Download

  • The area of information fusion has grown considerably during the last few years, leading to a rapid and impressive evolution. In such fast-moving times, it is important to take stock of the changes that have occurred. As such, this books offers an overview of the general principles and specificities of information fusion in signal and image processing, as well as covering the main numerical methods

    pdf297p titatu_123 01-03-2013 60 7   Download

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