Iris recognition is one of the most reliable personal identification methods. The potential requirement of obtaining high accuracy is that users supply iris images with good quality. It is thus necessary for an iris recognition system to operate the possibly blurred iris images due to less cooperation of users and camera with low resolution. This paper proposes a new algorithm for resolution en...

Resolution enhancement of spaceborne scatterometer data" (1993). All Faculty Publications. Paper 708.

In this thesis we propose a novel use of the temporal similarity in frames of a video sequence. Traditionally, video compression algorithms exploit this with interframe coding. Instead, we use the information to enhance the resolution of the video sequence. We use a standard motion estimation technique followed by an analytical method of sub-pixel motion re-estimation that we develop, on each o...

Mobile phones are one of the most commonly used tools in our daily life and many people record videos of the various events by using the embedded cameras, and usually due to low resolution of the cameras, reviewing the videos on the high resolution screens is not very pleasant. That is one of the reasons that nowadays resolution enhancements of low resolu‐ tion video sequences are at the centre...

The aim of image resolution enhancement is to process a given input low resolution image to make the result more desirable than the original image for a given specific application. There are various image processing application which requires high resolution images for processing and analysis. One of the commonly used techniques for image resolution enhancement is Interpolation. Interpolation t...

Spatial resolution enhancement of hyperspectral images is one of the key and difficult topics in the field of imaging spectrometry. The redundant dictionary based sparse representation theory is introduced, and a spatial resolution enhancement algorithm is proposed. In this algorithm, a pixel curve instead of a pixel patch is taken as the unit of processing. A pair of lowand high-resolution res...

Resolution enhancement(RE) methods that are independent of wavelets i.e. interpolation methods leads to blurring as high frequency components are lost.RE scheme based on Discrete wavelet transform(DWT) leads to artifacts due to shift variant property. A complex wavelet-domain image resolution enhancement algorithm based on dual-tree complex wavelet transform (DT-CWT) with non local means(NLM) a...

Faces often appear very small in surveillance imagery because of the wide fields of view that are typically used and the relatively large distance between the cameras and the scene. For tasks such as face recognition, resolution enhancement techniques are therefore generally needed. Although numerous resolution enhancement algorithms have been proposed in the literature, most of them are limite...

In this paper we investigate robust watermarking integrated with H.264/SVC video coding and address coarse-grain quality and spatial resolution scalability features according to Annex G of the H.264 standard. We show that watermark embedding in the base layer of the video is insufficient to protect the decoded video content when enhancements layers are employed. The problem is mitigated by a pr...