Range Image Quality Assessment by Structural Similarity

Synonyms

R-SSIM; Depth image quality assessment; Range image fidelity measurement

Definition

Structural similarity is a quality metric for range images that can handle missing data. It is based on the Multi Scale Structural Similarity Index.

Introduction

The R-SSIM Index uses of a modified version of the Multi-Scale SSIM [1] Index, but specially designed for range images. Range images, bear both many similarities and differences with luminance images. When applying the MS-SSIM algorithm to range images, the three similarity components of MS-SSIM, that is, luminance, contrast and structure, find their counterparts in the range domain as elevation, surface roughness and 3-D structure.

MS-SSIM

The MS-SSIM Index utilizes the same basic algorithm as the SSIM Index first proposed in [2], except it functions over several scales which allows the algorithm to incorporate image details at different resolutions. The algorithm’s greatest appeal is that it matches human subjectivity, since it is...