signal image and video processing ppt

... Corporation EURASIP Journal on Image and Video Processing Volume 2007, Article ID 25214, 12 pages doi:10.1155/2007/25214 Review Article Image and Video Processing for Visually Handicapped People Thierry ... generate and use mental images from elementary tactile pictures However, they suffer from imagery limitations when tactile images increase in complexity These EURASIP Journal on Image and Video Processing ... this toner swells and therefore gives a raised image Such static raised images are routinely used in many places; often however these images are prepared by hand and little image processing is involved

Ngày tải lên: 22/06/2014, 00:20

... multimedia-related image processing techniques,and intelligent multimedia processing; (2) methodologies, techniques, and applications: im-age and video coding, image and video storage and retrieval, digital video ... processing images and videos in a multimedia environment It coversthe following subjects arranged in two parts: (1) standards and fundamentals: standards, mul-timedia architecture for image processing, ... “Frontmatter”Multimedia Image and Video Processing Ed Ling Guan et al. Boca Raton: CRC Press LLC, 2001 Trang 2PROCESSING Trang 3IMAGE PROCESSING SERIESSeries Editor: Phillip A LaplanteForthcoming Titles Adaptive Image

Ngày tải lên: 23/10/2013, 16:15

... of interest anddeals with the fundamentals and properties of various image transforms used in image and video compression Subsequently, their application in designingimage and video processing ... restoration, image and video resizing, transcoding,etc In addition, different other applications in the compressed domain such as video and image editing, digital watermarking and steganography, imageand ... prob-lem of video resizing, in particular video downsampling, is discussed in thenext chapter on transcoding In chapter six, transcoding of images and videos is discussed As most ofthe image and video

Ngày tải lên: 05/06/2014, 12:04

... still-to-still, still-to-video and video-to-video matching in real-time Evaluation of this approach is done for still image and video based face recognition on LFW image dataset and MOBIO video dataset ... ability for still image face recognition and to be capable for still-to-video and video-to-video matching, we propose the following approaches to enhance MRH for face recognition on videos In this ... for image-set and video-image-set matching As part of the investigation into this problem, a subset of LFW database is used for image set matching, test and a large-scale audiovisual database video-set

Ngày tải lên: 21/06/2014, 06:20

... processing, ranging from image acquisition to image and video coding, to color image processing and analysis, and to color image encryption In 2007, a special issue on color image processing was edited ... watermarked image and the host image in the L∗a∗b∗color space 5.2 Color image filtering and enhancement The function of a filtering and signal enhancement module is to transform a signal into ... for a given processing task As such, filters and signal enhancement modules find applications in image processing, computer vision, telecommunications, geophysical signal processing, and biomedicine

Ngày tải lên: 22/06/2014, 00:20

... 17Spatio-Temporal Filtering For Image And Video Processing: Applications On Quality Enhancement, Coding and Data PruningbyD˜ung Trung V˜oDoctor of Philosophy in Image and Signal ProcessingUniversity of ... in JPEG Images”, the 15th IEEE Inter-national Conference on Image Processing, San Diego, CA, 2008. xiv Trang 15Coding Artifacts Reduction”, the 20th SPIE Visual Communications and ImageProcessing ... 112 6.2.4 Spatio-temporal Estimation for Video Processing 112 Bibliography 113 vi Trang 7Figure 1.1: Block diagram of an image and video processing system 1Figure 1.2: An example of

Ngày tải lên: 31/01/2021, 22:54

... only once on a given image Trang 71 Image patch sum classifier 3 Image topo context classifier 4 Image semantic classifier 5 Image semantic topo context flat classifier 6 Image semantic topo context ... has been used to build a variety of indexing networks for images and videos and to evaluate many aspects of them Using annotated corpora and protocols of the 2003 to 2006 TRECVID evaluation campaigns, ... and irregular network of them In order to increase the performance of the indexing sys-tems, more and more features and more and more layers are inserted The considered networks become more and

Ngày tải lên: 22/06/2014, 06:20

... selective encryption and Shannon’s work on communication and security [1] It is well known that statistics for image and video data differ much from classical text data Indeed, image and video data are ... represent band limited signals (which is the case for 2D images) A bandwidth preserving scrambling is proposed; the image signal is projected on the DPSS (which is a base for band limited signals) ... type: image and video. Trang 9Wen, Severa, Zeng, Luttrel, and Jin, 2002 A general selectiveencryption approach for fixed and variable length codes (FLC and VLC) is proposed in [24] FLC and VLC

Ngày tải lên: 22/06/2014, 00:20

... SL and CS are totally independent and are different lan-guages Nevertheless, in terms of image and video processing, one can identify some similarities: (i) both languages involve hand-gesture processing; ... consequence, we are focusing on hand-position recognition, lip reading, and hand and lip data flow fusion 2.2.1 Hand-position recognition and face processing Once the hand configuration (for consonant ... modality (related to hand configuration and hand position with respect to the face) Figures2and3 present the eight different hand shapes which code the consonants and the five hand positions which

Ngày tải lên: 22/06/2014, 00:20

... the advanced scalable video and image coding and the context-awareness framework, medical video and image delivery can be opti-mized in terms of better resources utilization and best per-ceived ... Finally,Section 7concludes the article and discusses future work 2 RELATED WORK IN SCALABLE CODING AND ADAPTIVE IMAGE AND VIDEO TELEMEDICINE SYSTEMS Scalable image and video coding has attracted recently ... transmission might occur at lower video quality, or alternatively video can be replaced by highly compressed images (suitable for low-bandwidth networks) Video and image coding and transmission can also

Ngày tải lên: 22/06/2014, 19:20

... Trang 1IMAGE AND VIDEO COMPRESSION FOR WIRELESS NETWORKSHo Anh Tuy H anoi University o f Technology N gu yen V inh An Hanoi Open University A b s tr a ct The demands for transmission of image, video ... wavelet compression for image and video over wireless networks This paper also introduces some change of wavelet parameters in order to improve quality of transmission image and video over wireless ... n e t- b a s e d video ap plications a n d Video Coding Exp ert s Group H.264 s t a n d a r d s for video compression is now widely used in videoconferencing systems MP EG 4 and H 263 prom ises

Ngày tải lên: 11/12/2017, 22:25

... include blocking, ringing, mosquito and flicker The methods to enhance image and video quality are also reviewed This project proposes a novel method for image and video enhancement using object maps ... trội của phương pháp đề xuất ABSTRACT Image and video compression is very popular in recent years However, quality reduction of the original image and video is unavoidable This project presents ... các chức năng như chụp hình và quay video với độ phân giải cao, truyền thông video, các dịch vụ web hình ảnh… càng làm cho ảnh và video số phổ biến Nén ảnh và video là yêu cầu tất yếu để làm giảm

Ngày tải lên: 23/01/2021, 10:36

... are to present, on the one hand, the general ideas offusion and its specificities in signal and image processing and in robotics, and on theother hand, the major methods and tools, which are essentially ... discussed further in an example in Chapter 10 1.6 Fusion in signal and image processing and fusion in other fields Fusion in signal and image processing has specific features that need to be takeninto ... debates, and even mistakes, during which the field con-of fusion in signal and image processing was not well defined, we are now able toefficiently use basic tools (often imported from other fields) and

Ngày tải lên: 07/03/2014, 04:20

... algorithms for first and third order TITO FIR demixing systems over 10 trials. Figure 2-3. (a) and (b) are the two original signals, (c) and (d) are the convolutively mixed signals, (e) and (f) are the ... combinations,” Digital Signal Processing, vol 6, no 1, pp 5–16, Jan 1996 6 K J Pope and R E Bogner, “Blind signal separation II: Linear, convolutive combinations,” Digital Signal Processing, vol ... of subband is M = 17, so m = 1 17 The parameter n is the discrete time sample index and is where the length of each filter for each subband is the equivalent... and father, Diana and Barry

Ngày tải lên: 19/01/2014, 18:20

... 2SIGNAL PROCESSING FOR TELECOMMUNICATIONSAND MULTIMEDIA Trang 3MULTIMEDIA SYSTEMS ANDRecently Published Titles: ADVANCED WIRED AND WIRELESS NETWORKS edited by Tadeusz A Wysocki, Arek Dadej and ... correctly band limited and sampled continuoussignal It is assumed that the noisy speech signal consists of speech andadditive noise Trang 161 HMM-Based Speech Enhancement 3where s(n) is the speech signal ... 0-7923-8322-2 INTERACTIVE VIDEO-ON-DEMAND SYSTEMS: Resource Management and Scheduling Strategies, by T P Jimmy To and Babak Hamidzadeh; ISBN: 0-7923-8320-6 MULTIMEDIA TECHNOLOGIES AND APPLICATIONS FOR

Ngày tải lên: 19/01/2014, 18:20

... tech-niques, the LZ77 and LZ78 algorithms, are presented Finally, a brief summary of and a performancecomparison between international standard algorithms for lossless still image coding are presented.Since ... levels: black and white The resolution of these binarytone images is usually very high In each scan line, there are many consecutive white and blackpixels, i.e., many alternate white runs and black ... modes and the corresponding output codewords There, (a0a1) and (a1a2) represent 1-D run-length codewords of run-length a0a1 and a1a2, respectively 6.2.3 E FFECT OF T RANSMISSION E RROR AND U

Ngày tải lên: 19/01/2014, 20:20

... international video coding standards H.261, H.263, and MPEG 1, 2, and 4 4.6 SUMMARY In transform coding, instead of the original image or some function of the original image in the spatial and/ ... estimation; subimage sizes of 4, 8, and 16 are used most often. In particular, N = 8 is adopted by the international still image coding standard, JPEG, as well as video coding standards H.261, ... the image G and the basis image I u,v (Wintz, 1972). Note that basis images have nothing to do with the input image. Instead, it is completely defined by the transform itself. That is, basis images

Ngày tải lên: 19/01/2014, 20:20

... motionestimation technique in video coding In fact, it has been adopted by all the international videocoding standards: ISO, MPEG-1 and MPEG-2, and ITU H.261, and H.263 These standards will be introduced ... accordingly and applied to the second and third images to check the PSNR and processing time It was reported in numerous experiments that this adjusted threshold value was accurate enough, and that ... is still verydemanding, particularly in audiovisual data storage, retrieval, and distribution The applicationsinclude digital library, video on demand, audiovisual databases, and so on Therefore,

Ngày tải lên: 25/01/2014, 13:20

... as a single pixel Also note that the terms pel and pixel have the same meaning Both terms are used frequently in the field of signal and image processing This chapter is organized as follows ... is one of the three major approaches to two-dimensional displacement estimation in image planes for the signal processing community Conceptually speaking, it is one type of region-matching technique ... FORMULATION In 1979 Netravali and Robbins published the first pel recursive algorithm to estimate displacement vectors for motion-compensated interframe image coding Netravali and Robbins (1979) defined

Ngày tải lên: 25/01/2014, 13:20

... Internet products and services that ride atop of and use abroadband transport Our products and services that make use of Trang 1612the Internet and IP technologies include Windows XP and MediaCenter ... new technologies can flourish and consumers can receive and enjoy new and innovative Internet services and products. con-We see the emergence of broadband platforms and Internet Protocol (IP) nology ... content and these services throughout the home and on the go MSN delivers to the computers and wireless phones and handheld devices of consumers a variety of content, including news and entertain-

Ngày tải lên: 18/02/2014, 00:20