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Related Concept Videos

Properties of the z-Transform II01:16

Properties of the z-Transform II

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The property of Accumulation in signal processing is derived by analyzing the accumulated sum of a discrete-time signal and using the time-shifting property to determine its z-transform. This principle reveals that the z-transform of the summed signal is related to the z-transform of the original signal by a multiplicative factor.
Moreover, the convolution property indicates that the convolution of two signals in the time domain corresponds to the product of their z-transforms in the frequency...
269
Theorems of Pappus and Guldinus: Problem Solving01:12

Theorems of Pappus and Guldinus: Problem Solving

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Pappus and Guldinus's theorems are powerful mathematical principles that are used for finding the surface area and volume of composite shapes. For example, consider a cylindrical storage tank with a conical top. Finding the surface area or volume can be challenging for such complex shapes. These theorems are particularly useful in calculating the volume and surface area of such systems. Here, the cylindrical storage tank with a conical top can be broken down into two simple shapes: a...
901
Shape and Texture of Coarse Aggregate01:25

Shape and Texture of Coarse Aggregate

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Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
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Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

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To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
220
Inverse z-Transform by Partial Fraction Expansion01:20

Inverse z-Transform by Partial Fraction Expansion

516
The inverse z-transform is a crucial technique for converting a function from its z-domain representation back to the time domain. One effective method for finding the inverse z-transform is the Partial Fraction Method, which involves decomposing a function into simpler fractions with distinct coefficients. These fractions correspond to known z-transform pairs, facilitating the inverse transformation process.
To begin the process, the poles of the function are identified and the function is...
516
Properties of the z-Transform I01:17

Properties of the z-Transform I

445
The z-transform is a fundamental tool in digital signal processing, enabling the analysis of discrete-time systems through its various properties. It is an invaluable tool for analyzing discrete-time systems, offering a range of properties that simplify complex signal manipulations. One fundamental property is linearity. For any two discrete-time signals, the z-transform of their linear combination equals the same linear combination of their individual z-transforms. This property is essential...
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A New Pooling Approach Based on Zeckendorf's Theorem for Texture Transfer Information.

Vincent Vigneron1,2, Hichem Maaref1, Tahir Q Syed3

  • 1Computer Science Department, Univ Evry, Université Paris-Saclay, 91190 Saint-Aubin, France.

Entropy (Basel, Switzerland)
|March 6, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces Z pooling, a novel method replacing maximum pooling in convolutional neural networks (CNNs). Z pooling enhances image segmentation by improving rotation tolerance and receptive field, outperforming traditional methods.

Keywords:
FibonacciLBPZeckendorf theoremdeep learningglioblastomaimage representationpooling functionsegmentation

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Area of Science:

  • Computer Science
  • Artificial Intelligence
  • Machine Learning

Background:

  • Pooling layers are crucial for invariance in convolutional neural networks (CNNs).
  • Traditional pooling methods like max pooling have limitations in handling data variations and geometric arrangements.
  • Image segmentation tasks require robust feature extraction and invariance to transformations.

Purpose of the Study:

  • To propose and evaluate a new pooling method, Z pooling, based on Zeckendorf's number series.
  • To demonstrate the advantages of Z pooling over traditional pooling functions for image segmentation tasks.
  • To explore the parameterless receptive field expansion and rotation tolerance properties of Z pooling.

Main Methods:

  • Replacing standard maximum pooling layers with Z pooling layers in deep learning architectures.
  • Utilizing Zeckendorf's number series as the basis for the Z pooling mechanism.
  • Evaluating the proposed method on traditional image segmentation and dense labeling tasks.

Main Results:

  • Z pooling exhibits superior performance in image segmentation tasks compared to other pooling functions.
  • The Z pooling layer enhances rotation tolerance and parameterlessly increases the receptive field.
  • Different Z pooling combinations can emphasize image frequencies and extract ultrametric contours.

Conclusions:

  • Z pooling offers a promising alternative to traditional pooling methods in CNNs, particularly for segmentation.
  • The method's independence from geometric arrangements provides significant advantages for image analysis.
  • Z pooling's unique properties enable advanced image processing capabilities like frequency emphasis and contour extraction.