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This paper presents a method for automatic removal of local defects such as blotches and impulse noise in old motion picture films. The method is fully automatic and includes the following steps: fuzzy prefiltering, motioncompensated blotch detection, and spatiotemporal inpainting. The fuzzy prefilter removes small defective areas such as impulse noise.(More)
In this paper, we propose an improved motion-compensated restoration method for color motion picture films deteriorated due to flashing blotches. The method consists of an improved multiresolution block matching with log-D search, a rank ordered differences-based blotch detection and 3D vector median filtering for interpolation of missing data, and utilizes(More)
In this study intended to salt and pepper noise in gray level digital image is reduced with adaptive fuzzy filter(ABF) method. Filtering process is realized in two stages. In the first stage, amount of salt and pepper noise has been detected in the image. In the second stage, noise is reduced by a filter that of coefficients are determined according to(More)
In this paper, a method for reconstructing ellipsoids from three projection contours is described. Line integral projection of an ellipsoid with uniform density is developed to obtain the equation of the projection contour for any projection view. The reconstruction method starts from the estimation of parameters of a projection contour that has elliptic(More)
The motion vector of the current block in the forward temporal direction pointed by arrow 2 is reestimated as follows: ( ) 2 , , ( , , 1) MV x y t MV x y t > − Motion does not change suddenly in any natural image sequence. This characteristic can be utilized in calculating correlation of motion vectors in the same spatial location within neighbor frames.(More)
Based on the previous studies, this article proposes an effective modulation recognition algorithm which is a combination of Higher Order Cumulants (HOC) and Continues Wavelet Transform (CWT). In the Additive White Gaussian Noise (AWGN) the identification of QAM16, QAM32, QAM64, BPSK, QPSK and PSK8 types of modulation were almost successful. In the case of(More)
We propose a rate-1 space-time transmit diversity technique. We obtained second-order diversity by transmitting the real and imaginary parts of the symbols from two antennas. With four transmit antennas, we can add Alamouti coding to reach fourth-order transmit diversity. There is no need to detect symbols jointly in either of these applications. It is(More)