QuaSI: Quantile Sparse Image Prior for Spatio-Temporal Denoising of Retinal OCT Data

03/08/2017
by   Franziska Schirrmacher, et al.
0

Optical coherence tomography (OCT) enables high-resolution and non-invasive 3D imaging of the human retina but is inherently impaired by speckle noise. This paper introduces a spatio-temporal denoising algorithm for OCT data on a B-scan level using a novel quantile sparse image (QuaSI) prior. To remove speckle noise while preserving image structures of diagnostic relevance, we implement our QuaSI prior via median filter regularization coupled with a Huber data fidelity model in a variational approach. For efficient energy minimization, we develop an alternating direction method of multipliers (ADMM) scheme using a linearization of median filtering. Our spatio-temporal method can handle both, denoising of single B-scans and temporally consecutive B-scans, to gain volumetric OCT data with enhanced signal-to-noise ratio. Our algorithm based on 4 B-scans only achieved comparable performance to averaging 13 B-scans and outperformed other current denoising methods.

READ FULL TEXT

Authors

page 5

page 7

02/12/2018

Temporal and Volumetric Denoising via Quantile Sparse Image (QuaSI) Prior in Optical Coherence Tomography and Beyond

This paper introduces an universal and structure-preserving regularizati...
09/27/2018

A Deep Learning Approach to Denoise Optical Coherence Tomography Images of the Optic Nerve Head

Purpose: To develop a deep learning approach to de-noise optical coheren...
01/27/2022

Unsupervised Denoising of Retinal OCT with Diffusion Probabilistic Model

Optical coherence tomography (OCT) is a prevalent non-invasive imaging m...
05/31/2020

DANR: Discrepancy-aware Network Regularization

Network regularization is an effective tool for incorporating structural...
12/28/2018

CFA Bayer image sequence denoising and demosaicking chain

The demosaicking provokes the spatial and color correlation of noise, wh...
06/09/2021

Spatio-Temporal Dual-Stream Neural Network for Sequential Whole-Body PET Segmentation

Sequential whole-body 18F-Fluorodeoxyglucose (FDG) positron emission tom...
12/06/2013

Multi-frame denoising of high speed optical coherence tomography data using inter-frame and intra-frame priors

Optical coherence tomography (OCT) is an important interferometric diagn...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.