On the discrete cosine transform computation

Britaňák, Vladimír

doi:10.1016/0165-1684(94)90066-3

Cited by 19 publications

(5 citation statements)

References 7 publications

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“…18 we present EPE(M ) for optimal adaptive (degree 4) and optimal classic (degree 7) transforms. Again throughout the scale of compression ratios the ACHT 4 is more efficient than CHT 7 .…”

Section: Resultsmentioning

confidence: 95%

Data Compression Using New Fast Adaptive Cosine–Haar Transforms

Morháč

Matoušek

1998

Digital Signal Processing

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“…18 we present EPE(M ) for optimal adaptive (degree 4) and optimal classic (degree 7) transforms. Again throughout the scale of compression ratios the ACHT 4 is more efficient than CHT 7 .…”

Section: Resultsmentioning

confidence: 95%

Data Compression Using New Fast Adaptive Cosine–Haar Transforms

Morháč

Matoušek

1998

Digital Signal Processing

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“…However, the noise reduction principle of the above three image denoising algorithms is to adopt the same noise reduction model for the edge region and the inner region in the image, which will cause the loss of texture feature information while filtering out noises [ 62 ]. The commonly used transform domain methods mainly include Discrete Fourier Transform (DFT) [ 63 ], Fast Fourier Transform (FFT) [ 64 ], Discrete Cosine Transform (DCT) [ 65 ], etc. Different transform domain methods will make each region of the image show different characteristics.…”

Section: The Flow Of Fault Diagnosis Methods For Rotating Machinery U...mentioning

confidence: 99%

A Review of Fault Diagnosis Methods for Rotating Machinery Using Infrared Thermography

Wang¹,

Zhan²,

Bai³

et al. 2022

Micromachines

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At present, rotating machinery is widely used in all walks of life and has become the key equipment in many production processes. It is of great significance to strengthen the condition monitoring of rotating machinery, timely diagnose and eliminate faults to ensure the safe and efficient operation of rotating machinery and improve the economic benefits of enterprises. When the state of a rotating machine deteriorates, the thermal energy that is much more than its normal operation will be generated due to the increase in the friction between the components or other factors. Therefore, using the infrared thermal camera to collect the infrared thermal images of rotating machinery and judge the health status of rotating machinery by observing the temperature distribution in the thermal images is often more rapid and effective than other technologies. Nevertheless, after decades of development, the research achievements of infrared thermography (IRT) and its application in various industrial fields are numerous and complex, and there is a lack of systematic sorting and summary of the achievements in this field. Accordingly, this paper summarizes the development and application of IRT as a non-contact and non-invasive tool for equipment condition monitoring and fault diagnosis, and introduces the basic theory of IRT, image processing technology and fault diagnosis methods of rotating machinery in detail. Finally, the review is summarized and some future potential topics are proposed, which will make the subject easier for beginners and non-experts to understand.

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“…We evaluated the results for different number of processor cores (2, 4, 8 and 16). The implemented integer forward transform is based on the butterfly method [5] generally applied on macroblocks of size 4 × 4 pixels [20] and often on macroblocks of size 8 × 8 pixels [30] in the high profiles (like High Definition profiles). Figure 7 presents ICT execution results on homogeneous multi-core configurations varying the number of integrated cores as well as the picture format [CIF (Common Intermediate Format), QCIF (Quarte-CIF) and HD].…”

Section: Mpsoc Evaluation and Motivationmentioning

confidence: 99%

Design Space Exploration of HW Accelerators and Network Infrastructure for FPGA-Based MPSoC

Dammak,

Baklouti,

Alsekait

2024

IEEE Access

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Supercomputing systems are increasingly reliant on heterogeneous Multiprocessors System on-Chip (MPSoCs), merging multiple processors and hardware accelerators (HWAcc) on the same die to achieve power and performance needs. Due to CPU complication and timing closure challenges of tightly coupled design approach, the state-of-the art of HWAcc design methodology relies on coupling the processors with loosely coupled HWAccs. Loosely-coupled HWAccs can be shared or private accelerators running custom instructions to form a heterogeneous multi-processor system. Some works discussed the determination of the sharing degree of the HWAcc over the processors, however the impact of the integrated communication infrastructure is not discussed. Thus, we propose a high-level design exploration tool to select the accelerators and generate the adequate communication interconnect under performance and area constraints. Different homogeneous and heterogeneous multi-processor configurations are evaluated and compared running different signal processing benchmarks. Experimental results show the efficiency of the proposed exploration tool to rapidly explore and select the adequate architecture.

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On the discrete cosine transform computation

Cited by 19 publications

References 7 publications

Data Compression Using New Fast Adaptive Cosine–Haar Transforms

Data Compression Using New Fast Adaptive Cosine–Haar Transforms

A Review of Fault Diagnosis Methods for Rotating Machinery Using Infrared Thermography

Design Space Exploration of HW Accelerators and Network Infrastructure for FPGA-Based MPSoC

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