A Novel Algorithmic Approach for Efficient Realization of 2-D-DCT Architecture for HEVC

Singhadia, Ashish; Bante, Pratik; Chakrabarti, Indrajit

doi:10.1109/tce.2019.2916060

Cited by 17 publications

(3 citation statements)

References 24 publications

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“…In [13], an efficient hardware implementation was proposed for high-speed vector-radix decimation-in-frequency three-dimensional DCT with an optimum area and power consumption. In [14], a novel algorithm was proposed to determine the minimum number of low-frequency DCT coefficients required for transform and quantization block in high-efficiency video coding. In [15], a novel semifragile watermarking technique using integer wavelet transform and DCT for tamper detection and recovery to enhance enterprise multimedia security was proposed.…”

Section: Related Workmentioning

confidence: 99%

Improving the Quality of Left-Behind Children’s Participation in Sports through Wireless Network Monitoring

Zhao

2021

Mobile Information Systems

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Urbanization is the process that people shift from rural to urban areas, which has led to large numbers of left-behind children in China. The left-behind children stay in rural regions of China while their parents work in urban areas. The left-behind children have few opportunities to participate in sports due to the lacking of concern, and it is not of high quality even though they participate in sports. Therefore, it is necessary to improve the quality of left-behind children's sports participation through wireless network monitoring. Wireless network monitoring transmits high-definition (HD) video streaming in real time to facilitate feedback timely. This paper studies the two-dimensional (2D) integer discrete cosine transform (DCT) and analyzes the reason for image distortion, then an improved DCT coefficient quantization approach is proposed for long-distance real-time transmission of HD video streaming, and a noise processing with a zero-mean noise processing is added in optimized approach to solve the image distortion problem. The experimental results show that the proposed improved approach has a good performance in reducing the blocking artifacts, and within the image reconstruction, the proposed approach improves the subjective video quality.

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Section: Related Workmentioning

confidence: 99%

Improving the Quality of Left-Behind Children’s Participation in Sports through Wireless Network Monitoring

Zhao

2021

Mobile Information Systems

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“…The Joint Collaborative Team-Video Coding (JCT-VC) has defined the integer DCTs for transform lengths, N = 4, 8, 16, and 32 for the video coding standard H.265/HEVC (High Efficiency Video Coding) [3,4]. Low-cost hardware implementations of the integer DCTs for HEVC were proposed in [5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Area-Time Efficient Two-Dimensional Reconfigurable Integer DCT Architecture for HEVC

Meher¹,

Lam

Srikanthan

et al. 2021

Electronics

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In this paper, we present area-time efficient reconfigurable architectures for the implementation of the integer discrete cosine transform (DCT), which supports all the transform lengths to be used in High Efficiency Video Coding (HEVC). We propose three 1D reconfigurable architectures that can be configured for the computation of the DCT of any of the prescribed lengths such as 4, 8, 16, and 32. It is shown that matrix multiplication schemes involving fewer adders can be used to derive parallel architectures for 1D integer DCT of different lengths. A novel transposition buffer is designed to be used for the proposed 2D DCT architecture, which offers double the throughput without increasing the size of the transposition buffer. We determine the optimal pipeline locations in the proposed design through the precise estimation of propagation delays and the critical path so that the area-delay-product is optimized and all the output samples are obtained in the same cycle in spite of the recursive nature of the structure. Implementation results show that the proposed 2D integer DCT architectures provide significantly higher throughput per unit area than the existing designs for HEVC.

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“…However, even considering state-of-theart algorithms, the computational cost of the DCT can still be prohibitive in scenarios of very low processing power or severe restrictions of energy autonomy [19,20]. In this context, several multiplierless approximations for the DCT have been proposed [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Low-complexity Rounded KLT Approximation for Image Compression

Radünz,

Bayer,

Cintra

2021

Preprint

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The Karhunen-Loève transform (KLT) is often used for data decorrelation and dimensionality reduction. Because its computation depends on the matrix of covariances of the input signal, the use of the KLT in real-time applications is severely constrained by the difficulty in developing fast algorithms to implement it. In this context, this paper proposes a new class of low-complexity transforms that are obtained through the application of the round function to the elements of the KLT matrix. The proposed transforms are evaluated considering figures of merit that measure the coding power and distance of the proposed approximations to the exact KLT and are also explored in image compression experiments. Fast algorithms are introduced for the proposed approximate transforms. It was shown that the proposed transforms perform well in image compression and require a low implementation cost.

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A Novel Algorithmic Approach for Efficient Realization of 2-D-DCT Architecture for HEVC

Cited by 17 publications

References 24 publications

Improving the Quality of Left-Behind Children’s Participation in Sports through Wireless Network Monitoring

Improving the Quality of Left-Behind Children’s Participation in Sports through Wireless Network Monitoring

Area-Time Efficient Two-Dimensional Reconfigurable Integer DCT Architecture for HEVC

Low-complexity Rounded KLT Approximation for Image Compression

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