handbook of image and video processing by alan c bovik

Ngày tải lên: 18/04/2014, 10:59

Ngày tải lên: 23/10/2013, 16:15

Ngày tải lên: 27/10/2013, 23:15

... tools into the scope of a video standard, and hence bridges computer graphics and image processing. ©2001 CRC Press LLC by a collaborative phase. During the competitive phase, a call for proposals ... vectors (commonly available in compressed video bitstreams) form a useful descriptor for motion characteristics of a video clip. MPEG-7 also uses the concept of description scheme (DS), which ... Guan Sun-Yuan Kung Jan Larsen ©2001 CRC Press LLC MULTIMEDIA IMAGE and VIDEO PROCESSING © 2001 by CRC Press LLC The computation burden can be reduced by using fixed point instead of floating point op- erations...

Ngày tải lên: 08/05/2014, 16:13

... processing of image data in digital form by a digital computer, occurred in 1957 with the first picture scanner attached to the National Bureau of Standards Electronic Automatic Computer (SEAC), ... Signal Processing Sense 8 1.4.4 Misinterpretation of Concept of Real-time 8 1.4.5 Challenges in Real-time Image/ Video Processing 9 1.5 Historical Perspective 9 1.5.1 History of Image/ Video Processing ... video object segmentation using MPEG-encoded video sequences. The use of these features allowed the construction of a feature vector that succinctly captured the frequency- temporal characteristics of...

Ngày tải lên: 05/06/2014, 11:40

...

Ngày tải lên: 05/06/2014, 11:59

... : Basic steps in processing with compressed images. with the DCT c oefficients of the image and produce the DCT coefficients of the processed images. In this case, though there are overheads of entropy decoding ... of the block. The rest of the coefficients for all other frequency components are known as AC coefficients. Usually, DC coefficients of neighboring blocks are highly correlated. That is why these coefficients ... 42 xi © 2011 by Taylor and Francis Group, LLC Image and Video Compression: An Overview 7 Input Compressed Image Decompression Processing in Spatial Domain Compression Output Compressed Image Figure...

Ngày tải lên: 05/06/2014, 12:04

... object-based detection is already chal- lenging on its own, especially with respect to correct and consistent object detection and its correct detection behavior when scene and light changes occur. ... camera, which includes lens control, exposure control of the sensor, and gain control of the image processing chain. We will apply the concept of a recursive control proposed in previous section, intended ... intelligent processing in the camera can consider only important scene parts, based on statistical measures of “contrast” and “focus”, face and skin-tones, object-based detection and tracking, and so...

Ngày tải lên: 21/06/2014, 06:20

... M.Arnold,A.Ghosh,G.Lacey,S.Patchett,andH.Mulcahy, “Indistinct frame detection in colonoscopy videos,” in Pro- ceedings of the 13th International Machine Vision and Image Processing Conference (IMVIP ’09), ... detection of lesions [42]. Consequently, removal of these artefacts is of high importance both from the clinical and the technical perspect ives. 4 EURASIP Journal on Image and Video Processing (a) ... the appendix, (b) Colonoscopic image with specularity and colour channel misalignment due to sequential RGB endoscopic system, (c) Colonoscopic image showing a colonic polyp. Figure 2: Example...

Ngày tải lên: 21/06/2014, 06:20

... rejection ratio (1–0.65 η ), that is specialized in rejecting context-speci c clutter and distractors. The threshold η canbechosenaccordingtothe classification complexity of the visual context and ... Gunes, and M. Piccardi, “Head detection for video surveillance based on categorical hair and skin colour models,” in Proceedings of the 16th IEEE International Conference on Image Processing (ICIP ... Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR’99), vol. 2, pp. 160–166, June 1999. [36] R. Cucchiara, C. Grana, M. Piccardi, and A. Prati, “Detecting moving...

Ngày tải lên: 21/06/2014, 06:20

... number of examined faces. PR is the ratio of the number of correctly classifying a face image as a face image and nonface image as nonface image to the total number of images evaluated. TP indicates ... under occlusion by integrating face and person detectors,” in Proceedings of the 3rd International Conference on Advances in Biometrics (ICB ’09), vol. 5558 of Lecture Notes in Computer Science, ... 100 Number of features CoLBP c = 1 CoLBP c = 2 CoLBP c = 3 CoLBP c = 4 CoLBP Features performance Figure 8: Training error for different number of co-occurred features. The feature extraction of the CoLBP...

Ngày tải lên: 21/06/2014, 06:20

... McCahill and C. Norris, Urbaneye: CCTV in London, Centre for Criminology and Criminal Justice, University of Hull, UK, 2002. [2] G.Francisco,S.Roberts,K.Hanna,andJ.Heubusch,“Critical infrastructure ... still images and video sequences. It can be further classified into t hree categories: still image to still image matching, video sequence to video sequence matching, and still image to video ... index of the n c samples of image set c; theaffine hull that represents the images set is modelled as H c =  x = μ c + U c v c  , μ c = 1 n c n c  k=1 x ck , (8) where U c is the set of eigenvectors...

Ngày tải lên: 21/06/2014, 06:20

... document repository can be enriched w ith new content descriptors by its curators, and generic users can access and browse the document center, searching the structured information in the descriptors ... light a brickwork room for food maintenance, a furnace, and the basement of a wing of the castle, exactly in correspondence with the anomaly sources detected by the geoelectric inspection. The ... topics, such as high- resolution 2D and 3D digital capture and rendering of artworks, digital restoration, enhancement, recognition, and classification of features, structures and content in cultural heritage...

Ngày tải lên: 21/06/2014, 18:20

... number of CCPs encrypted. (c) Cryptographic security: iterative encryption of CCPs may give a hint for side channel attacks (e.g., timing attack). (d) Encryption ratio: depends on the number of CCPs encrypted. (e) ... is achieved. Indeed, most of the image energy is concentrated in DC coefficients, thus, encrypting them affects considerably the image content. (c) Cryptographic security: vulnerable to chosen and known ... “Performance study of a selec- tive encryption scheme for the security of networked, real- time video, ” in Proceedings of the 4th International Conference on Computer Communications and Networks (ICCCN...

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 28/06/2014, 22:20