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DLNR-SIQA: Deep Learning-Based No-Reference Stitched Image Quality Assessment.

Hayat Ullah1, Muhammad Irfan1, Kyungjin Han1

  • 1Mixed Reality and Interaction Lab, Department of Software, Sejong University, Seoul 143-747, Korea.

Sensors (Basel, Switzerland)
|November 17, 2020
PubMed
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This study introduces a novel deep learning approach for assessing the quality of stitched images in immersive content. The method effectively localizes and segments stitching errors, improving quality evaluation for virtual and augmented reality applications.

Area of Science:

  • Computer Vision
  • Artificial Intelligence
  • Immersive Media Technology

Background:

  • Advancements in virtual reality (VR) and augmented reality (AR) drive demand for high-quality immersive content.
  • Deep learning shows promise for image quality assessment, but existing methods struggle with panoramic stitching errors.

Purpose of the Study:

  • To develop a novel deep learning-based No-Reference Stitched Image Quality Assessment (DLNR-SIQA) method.
  • To address limitations of current methods in localizing and segmenting stitching errors in immersive content.

Main Methods:

  • A three-fold approach utilizing Mask R-CNN (Regional Convolutional Neural Network) for error localization and segmentation.
  • Fine-tuning Mask R-CNN on annotated stitching error datasets.
  • Quality assessment based on segmented distorted regions.
Keywords:
computer visiondeep learningimage quality assessmentimage segmentationimmersive contents

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Main Results:

  • The proposed DLNR-SIQA method successfully segments and localizes stitching errors in immersive content.
  • Quantitative and qualitative comparisons show superior performance over existing state-of-the-art techniques.
  • The method outperforms both full reference (FR-IQA) and no reference (NR-IQA) methods.

Conclusions:

  • The novel DLNR-SIQA approach provides efficient and accurate quality assessment for immersive content.
  • This method enhances the quality evaluation of panoramic images by focusing on localized stitching defects.
  • The findings contribute to improving the production and consumption of high-fidelity VR/AR experiences.