Motion Picture Restoration : Digital Algorithms for Artefact Suppression in Degraded Motion Picture Film and Video

The manipulation of pictures and video in digital form has been an established research activity for more than twenty years. It is only recently, however, that digital image and video processing equipment has been accessible to the gen­ eral public. This is due in part to the rapidly growing economy. of the home computer. A major contributing factor has been the marked rise in the pres­ ence of the non-academic user on the internet, particularly the World Wide Web (WWW). Manipulating digital imagery has become synonymous with the WWW. It is the drive to present audio and visual media to the home user in an interactive form and to increase the available range of choices, which has encouraged agreements to begin digital video television broadcasting before the turn of the century. With the increased demand for video material, there is a perceived increase in demand for material from archive sources and this has fuelled commercial interest in automatic digital restoration processes. Further­ more there is a continuing effort to design techniques for correcting errors in received compressed video bit streams for the purposes of live communications links over noisy channels e. g. mobile telephones and the internet. This book introduces the reader to a range of digital restoration activities beyond the well traversed areas of noise reduction and deblurring. It describes a number of problems associated with archived film and video. This book looks at the design of automatic motion picture restoration tools that can be used for enhancing archive material, and reducing the storage requirements necessary for acceptable viewing quality so that data can be recorded on relatively low-cost media. An increasing amount of research is being carried out in the area of visual manipulation, aspects of which include Motion Estimation, Data Reconstruction and Human Visual Perception. Motion Estimation is relevant to everything in video processing, from reconstruction to robotics. Research is also being carried out in the area of post processing decoded video streams to improve the image quality of the film. This research also involves reconstruction. This book addresses both Motion Estimation and Reconstruction, and as such will be of great interest to researchers in both academia and industry Front Matter....Pages i-xv Introduction....Pages 1-11 Motion Estimation for Image Sequence Processing: An Overview....Pages 13-46 Three Dimensional Autoregressive Modelling for Image Sequences....Pages 47-83 Image Sequence Restoration: A Review....Pages 85-97 Line Registration for Jittered Video....Pages 99-118 Heuristics for Reconstructing Missing Data....Pages 119-150 Model Based Reconstruction for Missing Data....Pages 151-200 Large Area Reconstruction....Pages 201-226 Line Scratch Detection and Removal....Pages 227-240 Noise Reduction for Image Sequences....Pages 241-260 Using Colour....Pages 261-267 Parting Remarks....Pages 269-272 Back Matter....Pages 273-334