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Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
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When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
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Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications
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Patch-based models and algorithms for image denoising: a comparative review between patch-based images denoising

Monagi H Alkinani1, Mahmoud R El-Sakka2

  • 11Department of Computer Science, University of Jeddah, Asfan Road, 285, Dhahban, Jeddah, 23881 Saudi Arabia.

EURASIP Journal on Image and Video Processing
|February 4, 2020
PubMed
Summary
This summary is machine-generated.

Patch-based denoising methods effectively reduce noise in digital images, enhancing overall image quality. These advanced techniques represent the current state-of-the-art for image enhancement and noise reduction.

Keywords:
BM3DBilateral filterDictionary learning filteringGaussian patch-PCA filteringK-SVDNon-local means filteringPatch-based image denoisingProbabilistic patch-based filtering

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Area of Science:

  • Digital Image Processing
  • Computer Vision

Background:

  • Digital images are susceptible to noise during acquisition, transmission, or compression.
  • Image denoising and enhancement are critical preprocessing steps for various image processing tasks.
  • Patch-based denoising methods have emerged as leading approaches for additive noise reduction.

Purpose of the Study:

  • To investigate the application of state-of-the-art patch-based denoising methods for additive noise reduction.
  • To analyze the performance of these methods across diverse image datasets.

Main Methods:

  • Explanation of digital image noise types and denoising techniques, focusing on patch-based methods.
  • Quantitative and qualitative experimental evaluation of patch-based denoising performance.
  • Analysis of patch-based methods regarding image quality and computational efficiency.

Main Results:

  • Patch-based denoising methods demonstrate superior performance compared to other approaches.
  • Fast patch similarity measurements contribute to the development of efficient patch-based denoising algorithms.

Conclusions:

  • Patch-based denoising approaches are highly effective for noise reduction and image enhancement.
  • Patch-based denoising is identified as the current state-of-the-art in image denoising technology.