Nonlinear Interpolators for Old Movie Restoration
نویسندگان
چکیده
A nonlinear interpolat,or using a rational function filter is applied to the restoration of image sequence frames of digitized old movies. Samples to be interpolated are due to stationary and random defects. The interpolator is preceded by a defect localization algorithm. The performance of the proposed interpolator has been assessed on several sequences and compared with a classical morphological operator. The hardware implementation of the proposed rational interpolator is also considered. Simu1a.tions show that the interpolated frames with the proposed operator are free from blockiness and jaggedness which are very difficult to avoid when using linear operators.
منابع مشابه
Old Movie Restoration Using Rational Spatial Interpolators
The restoration of old movies using the newly developed ra.tiona1 functions filters is considered. After localization of the stationary and random defects, a spatial rational interpolator scheme is proposed to reconstruct the missing data. The experimental results demonstrate the usefulness of the rational interpolator in an application involving the restoration of defects in old movies. The re...
متن کاملRestoration of Nonlinearly Distorted Audio with the Application to Old Motion-pictures
In this paper a robust and efficient method is presented for restoration of nonlinearly distorted movie soundtracks. The method is based on the a priori knowledge of the shape of the nonlinear function, which is assumed to be a static nonlinearity. The original undistorted signal is modeled by a set of harmonically related sinusoids. This signal is led through the model of the nonlinear functio...
متن کاملAutomatic Compensation of Nonlinear Distortions
When a signal goes through a static nonlinear device, it will be distorted. Typical examples are the nonlinearly distorted movie soundtracks. At old movie soundtracks the sound was recorded by the variable density method[1]. This method is very sensitive to the exposition and development processes. If the recording light was too strong, or the development was produced by wrong parameters, the s...
متن کاملMultidirectional Scratch Detection and Restoration in Digitized Old Images
Line scratches are common defects in old archived videos, but similar imperfections may occur in printed images, in most cases by reason of improper handling or inaccurate preservation of the support. Once an image is digitized, its defects become part of that image. Many state-of-the-art papers deal with long, thin, vertical lines in old movie frames, by exploiting both spatial and temporal in...
متن کاملSmart load shedding and distributed generation resources rescheduling to improve distribution system restoration performance
After a permanent fault occurs if it is not possible to supply the load in the network, the optimal load restoration scheme allows the system to restoration the load with the lowest exit cost, the lowest load interruption, and in the shortest possible time. This article introduces a new design called Smart Load Shedding, abbreviated SLS. In the proposed SLS scheme, the types of devices in smart...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999