Resolution Enhancement by Incorporating Segmentation-based Optical Flow Estimation

Abstract

In this paper, the problem of recovering a high-resolution frame from a sequence of low-resolution frames is considered. High-resolution reconstruction process highly depends on image registration step. Typical resolution enhancement techniques use global motion estimation technique. However, in general, video frames cannot be related through global motion due to the arbitrary individual pixel movement between frame pairs. To overcome this problem, we propose to employ segmentation-based optical flow estimation technique for motion estimation with a modified model for frame alignment. To do that, we incorporate the segmentation with the optical flow estimation in two-stage optical flow estimation. In the first stage, a reference image is segmented into homogeneous regions. In the second stage, the optical flow is estimated for each region rather than pixels or blocks. Then, the frame alignment is accomplished by optimizing the cost function that consists of L1-norm of the difference between the interpolated low-resolution (LR) frames and the simulated LR frames. The experimental results demonstrate that using segmentation-based optical flow estimation in motion estimation step with the modified alignment model works better than other motion models such as affine, and conventional optical flow motion models.

Authors and Affiliations

Osama Omer

Keywords

Related Articles

Case Study of Named Entity Recognition in Odia Using Crf++ Tool

NER have been regarded as an efficient strategy to extract relevant entities for various purposes. The aim of this paper is to exploit conventional method for NER in Odia by parameterizing CRF++ tool in different ways. A...

New technique to insure data integrity for archival files storage (DIFCS)

In this paper we are developing an algorithm to increase the security of using HMAC function (Key-Hashed Message Authentication) to insure data integrity for exchanging archival files. Hash function is a very strong tool...

Enhancing the Administration of National Examinations using Mobile Cloud Technologies: A Case of Malawi National Examinations Board

Technological advances and the search for efficiency have catalyzed recently a migration from paper-and-pencil based way of doing things to computer-based in education and training at all levels with its drivers being fa...

An Unsupervised Local Outlier Detection Method for Wireless Sensor Networks

Recently, wireless sensor networks (WSNs) have provided many applications, which need precise sensing data analysis, in many areas. However, sensing datasets contain outliers sometimes. Although outliers rarely occur, th...

Face Age Estimation Approach based on Deep Learning and Principle Component Analysis

This paper presents an approach for age estimation based on faces through classifying facial images into predefined age-groups. However, a task such as the one at hand faces several difficulties because of the different...

Download PDF file
  • EP ID EP135213
  • DOI -
  • Views 111
  • Downloads 0

How To Cite

Osama Omer (2012). Resolution Enhancement by Incorporating Segmentation-based Optical Flow Estimation. International Journal of Advanced Computer Science & Applications, 3(6), 78-84. https://europub.co.uk/articles/-A-135213