digital recording, DVC format, 8-8 DCT, 2-4-8 DCT A fast algorithm is developed for direct conversions between the 2-4-8 DCT mode associated with the digital video cassette (DVC) standard and the ordinary 8-8 DCT associated with other formats of compressed video. The algorithm avoids explicit transformations to and from the original pixel domain and thus saves a considerable amount of computati...

Low-power design is one of the most important challenges to maximize battery life in portable devices and to save the energy during system operation. Discrete Cosine Transform (DCT) is widely used in image and video compression standards. In this paper, we review on a low-power DCT (Discrete Cosine Transform) architecture using varies techniques. Discrete Cosine Transform (DCT) is one of the mo...

People with the hearing problems have different listening preferences and characteristics in loss. So, aids need algorithms that provide amplification based on frequency, so hearing-impaired persons can use comfortably for a long duration. In this paper, new algorithm is proposed order to compensate sensorineural conductive loss using discrete cosine transform (DCT). DCT coefficients of input a...

In object-oriented image coding applications, the use of the SA-DCT (Shape-Adaptive Discrete Cosine Transform) and of the block-based DCT schemes associated to the EI (Extension-Interpolation) padding technique have shown promising results at high and low bit rates, respectively. Both the SA-DCT and the EI padding algorithm consist of two 1D-DCT processing. Recent works have shown that their ef...

Dopachrome tautomerase (Dct) is a type I membrane protein and an important regulatory enzyme that plays a pivotal role in the biosynthesis of melanin and in the rapid metabolism of its toxic intermediates. Dct-mutant melanocytes carrying the slaty or slaty light mutations were derived from the skin of newborn congenic C57BL/6J non-agouti black mice and were used to study the effect(s) of these ...

A new video coding method is presented in this paper, which has been applied to the remote microscope monitoring system (RMMS). Using a criterion deduced from DCT (Discrete Cosine Transform) and quantization formulas and a criterion gotten by researching the characteristic of DCT coefficients distribution and experiment results, the method can detect all-zero AC (Alternating Current) coefficien...

Persistent infection with high-risk human papillomavirus (HPV) genotype is a major factor leading to many human cancers. Mechanisms of HPV entry into host cells and genome trafficking towards the nucleus are incompletely understood. Dopachrome tautomerase (DCT) was identified as a cellular gene required for HPV infection in HeLa cells on a siRNA screen study. Here, we confirm that DCT knockdown...

Discrete Cosine transform DCT and inverse DCT IDCT have been widely used in many image processing systems and real-time computation of nonlinear time series. In this paper, a novel lineararray of DCT and IDCT is derived from the data flow of subband decompositions representing the factorized coefficient matrices in the matrix formulation of the recursive algorithm. For increasing the throughput...

A new DCT approximation that possesses an extremely low arithmetic complexity, requiring only 14 additions. This novel transform was obtained by means of solving a tailored optimization problem aiming at minimizing the transform computational cost. Second, we propose hardware implementations for several 2-D 8-point approximate DCT. All introduced implementations are sought to be fully parallel ...

Computation reduction is important for the implementation of software video codecs. This paper describes a scheme for reducing the required computations in video encoders by skipping some of the Discrete Cosine Transform (DCT) and quantization calculations. We study the relationship between the Mean Absolute Error (MAE) of the motion compensated difference blocks and the distribution of DCT coe...