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PU-DZMS: muestreo de la nube de puntos a través del codificador de zoom denso y la regresión complementaria a escala

Shucong Li1, Zhenyu Liu1, Tianlei Wang2

  • 1School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China.

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|August 27, 2025
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Resumen
Este resumen es generado por máquina.

Este estudio introduce el PU-DZMS, un nuevo método de toma de muestras de nubes de puntos. Mejora efectivamente el detalle geométrico y reduce las regiones dispersas mediante la integración de un codificador de zoom denso y regresión complementaria multiscala.

Palabras clave:
Codificador de Zoom DensoRegresión complementaria en escalas múltiplesImágenes de nubes de puntosNube de puntos de muestreo

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Área de la Ciencia:

  • Visión por computadora
  • Procesamiento de geometría 3D
  • Aprendizaje automático

Sus antecedentes:

  • La escasez de nubes de puntos en las imágenes conduce a la pérdida de detalles geométricos críticos.
  • Las redes de muestreo ascendente de nubes de puntos existentes luchan con la comprensión de características locales y globales, lo que causa distorsión de contorno y regiones dispersas.

Objetivo del estudio:

  • Abordar las limitaciones de las técnicas actuales de toma de muestras en la nube de puntos.
  • Proponer un nuevo método, PU-DZMS, para mejorar la densidad de la nube de puntos y la recuperación de detalles.

Principales métodos:

  • El método PU-DZMS propuesto comprende dos componentes clave: el codificador de zoom denso (DENZE) y el módulo de regresión complementaria multiscala (MSCR).
  • DENZE utiliza bloques ZOOM con conexiones densas y un mecanismo de transformador para capturar características geométricas locales y globales, clarificando los bordes de la nube de puntos.
  • MSCR expande las características y regresa las nubes de puntos densos utilizando el aprendizaje residual de escala cruzada, garantizando la continuidad geométrica y reduciendo la escasez local.

Principales resultados:

  • Los resultados experimentales en los conjuntos de datos PU-GAN y PU-Net demuestran la eficacia de PU-DZMS.
  • El método mejora con éxito los detalles geométricos y reduce las regiones dispersas en las nubes de puntos.
  • PU-DZMS muestra un gran rendimiento en las tareas de muestreo de nubes de puntos.

Conclusiones:

  • PU-DZMS supera efectivamente las limitaciones de los métodos existentes en la comprensión de la relación local-global para el muestreo de la nube de puntos.
  • La arquitectura propuesta aclara los bordes geométricos y reduce las regiones dispersas locales, lo que conduce a una mejor calidad de la nube de puntos.