No-reference stereoscopic images quality assessment method based on monocular superpixel visual features and binocular visual features

Zheng, Zhi; Liu, Yun; Huang, Baoqing; Yu, Hongwei

doi:10.1016/j.jvcir.2020.102848

Cited by 1 publication

(2 citation statements)

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“…Image naturalness is essential for image optimization to achieve pleasing perceptual quality [ 3 , 4 , 5 ], which influences the performance of image matching. The spatial-frequency domain associated image-optimization method is proposed to enhance image details while preserving the image naturalness.…”

Section: Discussionmentioning

confidence: 99%

“…Image matching is used to establish the correspondence between two or more images of the same scene taken from different viewpoints by the same or different sensors. In particular, feature-based image matching methods extract distinctive structures from the images, which depend heavily on image details (i.e., physical structures and textures) and naturalness as salient features for image matching [ 1 , 2 , 3 , 4 , 5 , 6 ]. The technique possesses the merits of high computational efficiency, high theoretical accuracy, and insensitivity to geometric deformations and differences [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

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A Spatial-Frequency Domain Associated Image-Optimization Method for Illumination-Robust Image Matching

Liu

Jia

et al. 2020

Sensors

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Image matching forms an essential means of data association for computer vision, photogrammetry and remote sensing. The quality of image matching is heavily dependent on image details and naturalness. However, complex illuminations, denoting extreme and changing illuminations, are inevitable in real scenarios, and seriously deteriorate image matching performance due to their significant influence on the image naturalness and details. In this paper, a spatial-frequency domain associated image-optimization method, comprising two main models, is specially designed for improving image matching with complex illuminations. First, an adaptive luminance equalization is implemented in the spatial domain to reduce radiometric variations, instead of removing all illumination components. Second, a frequency domain analysis-based feature-enhancement model is proposed to enhance image features while preserving image naturalness and restraining over-enhancement. The proposed method associates the advantages of the spatial and frequency domain analyses to complete illumination equalization, feature enhancement and naturalness preservation, and thus acquiring the optimized images that are robust to the complex illuminations. More importantly, our method is generic and can be embedded in most image-matching schemes to improve image matching. The proposed method was evaluated on two different datasets and compared with four other state-of-the-art methods. The experimental results indicate that the proposed method outperforms other methods under complex illuminations, in both matching performances and practical applications such as structure from motion and multi-view stereo.

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Section: Discussionmentioning

confidence: 99%