Performance evaluation of 3D-TV systems

The image quality circle is a commonly accepted framework to model the relation between the technology variables of a display and the resulting image quality. 3D-TV systems, however, go beyond the concept of image quality. Research has shown that, although 3D scenes are clearly more appreciated by subjects, the concept ’image quality’ does not...

Studying the effect of optimizing the image quality in saliency regions at the expense of background content

Manufacturers of commercial display devices continuously try to improve the perceived image quality of their products. By applying some post processing techniques on the incoming image signal, they aim to enhance the quality level perceived by the viewer. Applying such techniques may cause side effects on different portions of the processed...

Comparing subjective image quality measurement methods for the creation of public databases

An insect eye based image sensor with very large field of view

In this paper we discuss the design of a novel miniaturized image sensor based on the working principle of insect facet eyes. The main goals are to design an imaging system which captures a large field of view (FOV) and to find a good trade-off between image resolution and sensitivity. To capture a total FOV of 124°, we split up this FOV into 25...

In Search of an Objective Measure for the Perceptual Quality of Printed Images

This thesis is concerned with the topic of perceptual image quality. Our visual communication is mainly based on images, either natural or synthetic. Humans are able to judge whether an image is a good image. However, for many applications it would be faster and cheaper to estimate the quality of images using a computer. The major goal of this...

Image Quality Experience

While the world we live in becomes more saturated with ubiquitous digital displays, and as the threshold for creating digital media continues to drop, image quality is an issue that concerns an increasingly large segment of the population. Higher resolutions, increased dynamic range, and faster frame rates put increasing demands on resources...

Image Quality - Assessment in Diagnostoc Radiography: Resolution Characteristics in terms of Modulation Transfer Function (MTF)

Image quality in context

An analysis of the ergonomic quality of the current standards for the visual display quality leads to a number of recommendations for the development of new international standards: - Separation for different types of users, esp. display designers, purchasers, and end users, -Independence of display technology to allow comparison, -Modular...

Gauge fields in pictorial space

“Pictorial space” is the mental structure that appears to be the scaffold for the visual awareness when looking “into” (as opposed to “at”) a picture. Its structure differs from the “visual space” that is the scaffold for the visual awareness when looking into the scene in front of the observer. The structure of pictorial space has been probed...

Edge Enhancement Optimization in Flexible Endoscopic Images to the Perception of Ear, Nose and Throat Professionals

Objectives: Digital endoscopes are connected to a video processor that applies various operations to process the image. One of those operations is edge enhancement that sharpens the image. The purpose of this study was to (1) quantify the level of edge enhancement, (2) measure the effect on sharpness and image noise, and (3) study the...

Improved image quality using monolithic scintillator detectors with dual-sided readout in a whole-body TOF-PET ring: A simulation study

We have recently built and characterized the performance of a monolithic scintillator detector based on a 32 mm × 32 mm × 22 mm LYSO:Ce crystal read out by digital silicon photomultiplier (dSiPM) arrays coupled to the crystal front and back surfaces in a dual-sided readout (DSR) configuration. The detector spatial resolution appeared to be...