... processingofimage data in digital form by adigital computer, occurred in 1957 with the first picture scanner attached to the National Bureau of Standards Electronic Automatic Computer (SEAC), ... Signal Processing Sense 81.4.4 Misinterpretation of Concept of Real-time 81.4.5 Challenges in Real-time Image/ VideoProcessing 91.5 Historical Perspective 91.5.1 History of Image/ VideoProcessing ... video object segmentation using MPEG-encoded video sequences. The use of these featuresallowed the construction of a feature vector that succinctly captured the frequency-temporal characteristics of...
... object-based detection is already chal-lenging on its own, especially with respect to correct and consistent object detection and its correct detection behaviorwhen scene and light changes occur. ... camera, which includeslens control, exposure control of the sensor, and gaincontrol of the imageprocessing chain. We will apply theconcept of a recursive control proposed in previous section,intended ... intelligent processing in the camera can consideronly important scene parts, based on statistical measures of “contrast” and “focus”, face and skin-tones, object-baseddetection and tracking, and so...
... 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 ImageandVideo Processing (a) ... theappendix, (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...
... rejection ratio (1–0.65η),that is specialized in rejecting context-speci c clutter and distractors. The threshold η canbechosenaccordingtotheclassification complexity of the visual context and ... Gunes, and M. Piccardi, “Head detectionfor video surveillance based on categorical hair and skincolour models,” in Proceedings of the 16th IEEE InternationalConference on ImageProcessing (ICIP ... Proceedings of the IEEE ComputerSociety 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, “Detectingmoving...
... number of examined faces. PR is theratio of the number of correctly classifying a face image asa face imageand nonface image as nonface image to thetotal number of images evaluated. TP indicates ... under occlusion by integrating face and person detectors,” in Proceedings of the 3rd InternationalConference on Advances in Biometrics (ICB ’09), vol. 5558 of Lecture Notes in Computer Science, ... 100Number of featuresCoLBP c = 1CoLBP c = 2CoLBP c = 3CoLBP c = 4CoLBP Features performanceFigure 8: Training error for different number of co-occurredfeatures.The feature extraction of the CoLBP...
... 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,“Criticalinfrastructure ... 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 modelledasH c =x = μ c + U c v c ,μ c =1n c n c k=1xck,(8)where U c is the set of eigenvectors...
... document repository can beenriched 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 brickworkroom for food maintenance, a furnace, and the basement of a wing of the castle, exactly in correspondence with theanomaly 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 culturalheritage...
... number of CCPsencrypted. (c) Cryptographic security: iterative encryption of CCPsmay give a hint for side channel attacks (e.g., timingattack).(d) Encryption ratio: depends on the number of CCPsencrypted.(e) ... isachieved. Indeed, most of the image energy isconcentrated in DC coefficients, thus, encryptingthem 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 Conferenceon Computer Communications and Networks (ICCCN...