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Region of Convergence01:17

Region of Convergence

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The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is a crucial tool in the analysis of discrete-time systems, but its convergence is limited to specific values of the complex variable z. This range of values, known as the Region of Convergence (ROC), is fundamental in determining the behavior and stability of a system or signal. The ROC defines the region in the complex plane where the z-transform converges, which can take various...
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ClickAttention: Click region similarity guided interactive segmentation.

Long Xu1, Yongquan Chen2, Shanghong Li2

  • 1Shenzhen Institute of Artificial Intelligence and Robotics for Society, The Chinese University of Hong Kong, Shenzhen, 518172, China; Guangxi Medical University, Nanning, 530021, China.

Neural Networks : the Official Journal of the International Neural Network Society
|September 18, 2025
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Summary
This summary is machine-generated.

This study introduces a novel click attention algorithm for interactive image segmentation. The method enhances positive click influence and reduces interference, achieving superior performance with fewer parameters.

Keywords:
Attention couplingClick attentionDiscriminative affinity lossInteractive segmentation

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Area of Science:

  • Computer Vision
  • Machine Learning
  • Image Processing

Background:

  • Interactive segmentation relies on user clicks, but current methods struggle with local focus and efficiency.
  • Existing algorithms often require numerous clicks and face challenges in balancing performance and computational cost.

Purpose of the Study:

  • To develop an efficient interactive segmentation algorithm that expands click influence and minimizes interference.
  • To improve segmentation accuracy and reduce parameter count compared to state-of-the-art methods.

Main Methods:

  • Proposed a click attention algorithm that leverages region similarity to broaden positive click impact.
  • Introduced a discriminative affinity loss to decouple positive and negative click attention, preventing accuracy loss.
  • Evaluated the method on the DAVIS dataset.

Main Results:

  • Achieved a 2% performance gain (NoC@90) over SimpleClick-ViT-L on the DAVIS dataset.
  • Reduced parameter usage to only 15.6% of the state-of-the-art method.
  • Demonstrated superior performance and efficiency compared to existing interactive segmentation techniques.

Conclusions:

  • The proposed click attention algorithm offers state-of-the-art performance in interactive segmentation with significantly fewer parameters.
  • The method effectively addresses limitations of existing approaches, providing a more efficient and accurate solution.
  • Published data and code facilitate further research and application in image segmentation.